10-Q 1 d236240d10q.htm FORM 10-Q

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-Q

þ | QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended September 30, 2011

or

¨ | TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission file number 0-22664

Patterson-UTI Energy, Inc.

(Exact name of registrant as specified in its charter)

DELAWARE |  | 75-2504748
(State or other jurisdiction of incorporation or organization) |  | (I.R.S. Employer Identification No.)
450 GEARS ROAD, SUITE 500 HOUSTON, TEXAS |  | 77067
(Address of principal executive offices) |  | (Zip Code)

(281) 765-7100

(Registrant’s telephone number, including area code)

N/A

(Former name, former address and former fiscal year, if changed since last report)

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes þ No ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (section 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes þ No ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act:

Large accelerated filer |  | þ |  |  |  | Accelerated filer |  | ¨
Non-accelerated filer |  | ¨ |  |  |  | Smaller reporting company |  | ¨

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ¨ No þ

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date.

155,632,439 shares of common stock, $0.01 par value, as of October 28, 2011

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PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

TABLE OF CONTENTS

|  | PART I — FINANCIAL INFORMATION |  |  |  |
ITEM 1. |  | Financial Statements |  |  | Page |
|  | Unaudited consolidated balance sheets |  |  | 1 |
|  | Unaudited consolidated statements of operations |  |  | 2 |
|  | Unaudited consolidated statement of changes in stockholders’ equity |  |  | 3 |
|  | Unaudited consolidated statements of cash flows |  |  | 5 |
|  | Notes to unaudited consolidated financial statements |  |  | 6 |
ITEM 2. |  | Management’s Discussion and Analysis of Financial Condition and Results of Operations |  |  | 18 |
ITEM 3. |  | Quantitative and Qualitative Disclosures About Market Risk |  |  | 28 |
ITEM 4. |  | Controls and Procedures |  |  | 28 |
|  | PART II — OTHER INFORMATION |  |  |  |
ITEM 2. |  | Unregistered Sales of Equity Securities and Use of Proceeds |  |  | 28 |
ITEM 6. |  | Exhibits |  |  | 29 |
Signature |  |  | 30 |

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PART I — FINANCIAL INFORMATION

ITEM 1. Financial Statements

The following unaudited consolidated financial statements include all adjustments which are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented.

PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(unaudited, in thousands, except share data)

|  | September 30, 2011 |  |  | December 31, 2010 |
ASSETS |  |  |  |  |  |  |  |
Current assets: |  |  |  |  |  |  |  |
Cash and cash equivalents |  | $ | 10,645 |  |  | $ | 27,612 |
Accounts receivable, net of allowance for doubtful accounts of $4,885 and $5,114 at September 30, 2011 and December 31, 2010, respectively |  |  | 472,227 |  |  |  | 337,167 |
Federal and state income taxes receivable |  |  | — |  |  |  | 75,062 |
Inventory |  |  | 25,556 |  |  |  | 17,215 |
Deferred tax assets, net |  |  | 123,828 |  |  |  | 26,815 |
Assets held for sale |  |  | — |  |  |  | 23,370 |
Other |  |  | 59,022 |  |  |  | 50,169 |
Total current assets |  |  | 691,278 |  |  |  | 557,410 |
Property and equipment, net |  |  | 3,025,606 |  |  |  | 2,620,900 |
Goodwill and intangible assets |  |  | 176,601 |  |  |  | 179,683 |
Deposits on equipment purchases |  |  | 80,932 |  |  |  | 51,084 |
Other |  |  | 12,276 |  |  |  | 13,954 |
Total assets |  | $ | 3,986,693 |  |  | $ | 3,423,031 |
LIABILITIES AND STOCKHOLDERS’ EQUITY |  |  |  |  |  |  |  |
Current liabilities: |  |  |  |  |  |  |  |
Accounts payable |  | $ | 267,990 |  |  | $ | 162,400 |
Federal and state income taxes payable |  |  | 854 |  |  |  | — |
Accrued expenses |  |  | 152,301 |  |  |  | 147,315 |
Current portion of long-term debt |  |  | 10,000 |  |  |  | 6,250 |
Total current liabilities |  |  | 431,145 |  |  |  | 315,965 |
Borrowings under revolving credit facility |  |  | 15,800 |  |  |  | — |
Long-term debt |  |  | 385,000 |  |  |  | 392,500 |
Deferred tax liabilities, net |  |  | 718,927 |  |  |  | 511,422 |
Other |  |  | 9,088 |  |  |  | 15,537 |
Total liabilities |  |  | 1,559,960 |  |  |  | 1,235,424 |
Commitments and contingencies (see Note 11) |  |  |  |  |  |  |  |
Stockholders’ equity: |  |  |  |  |  |  |  |
Preferred stock, par value $.01; authorized 1,000,000 shares, no shares issued |  |  | — |  |  |  | — |
Common stock, par value $.01; authorized 300,000,000 shares with 183,108,650 and 181,537,568 issued and 155,625,890 and 154,193,754 outstanding at September 30, 2011 and December 31, 2010, respectively |  |  | 1,831 |  |  |  | 1,815 |
Additional paid-in capital |  |  | 831,869 |  |  |  | 796,641 |
Retained earnings |  |  | 2,199,560 |  |  |  | 1,987,999 |
Accumulated other comprehensive income |  |  | 18,137 |  |  |  | 21,597 |
Treasury stock, at cost, 27,482,760 shares and 27,343,814 shares at September 30, 2011 and December 31, 2010, respectively |  |  | (624,664 | ) |  |  | (620,445 | )
Total stockholders’ equity |  |  | 2,426,733 |  |  |  | 2,187,607 |
Total liabilities and stockholders’ equity |  | $ | 3,986,693 |  |  | $ | 3,423,031 |

The accompanying notes are an integral part of these unaudited consolidated financial statements.

1

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PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(unaudited, in thousands, except per share data)

|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Operating revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 436,827 |  |  | $ | 290,759 |  |  | $ | 1,200,664 |  |  | $ | 741,470 |
Pressure pumping |  |  | 225,164 |  |  |  | 81,104 |  |  |  | 604,954 |  |  |  | 194,219 |
Oil and natural gas |  |  | 11,837 |  |  |  | 6,800 |  |  |  | 35,678 |  |  |  | 21,564 |
Total operating revenues |  |  | 673,828 |  |  |  | 378,663 |  |  |  | 1,841,296 |  |  |  | 957,253 |
Operating costs and expenses: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  |  | 264,418 |  |  |  | 174,999 |  |  |  | 701,871 |  |  |  | 459,448 |
Pressure pumping |  |  | 149,577 |  |  |  | 51,305 |  |  |  | 397,018 |  |  |  | 132,401 |
Oil and natural gas |  |  | 2,306 |  |  |  | 1,484 |  |  |  | 6,406 |  |  |  | 5,326 |
Depreciation, depletion, amortization and impairment |  |  | 110,713 |  |  |  | 85,431 |  |  |  | 309,677 |  |  |  | 239,930 |
Selling, general and administrative |  |  | 15,957 |  |  |  | 13,685 |  |  |  | 48,681 |  |  |  | 37,491 |
Net gain on asset disposals |  |  | (1,437 | ) |  |  | (250 | ) |  |  | (4,058 | ) |  |  | (21,940 | )
Provision for bad debts |  |  | — |  |  |  | (500 | ) |  |  | — |  |  |  | (1,500 | )
Total operating costs and expenses |  |  | 541,534 |  |  |  | 326,154 |  |  |  | 1,459,595 |  |  |  | 851,156 |
Operating income |  |  | 132,294 |  |  |  | 52,509 |  |  |  | 381,701 |  |  |  | 106,097 |
Other income (expense): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  |  | 47 |  |  |  | 64 |  |  |  | 135 |  |  |  | 1,631 |
Interest expense |  |  | (3,835 | ) |  |  | (6,227 | ) |  |  | (11,238 | ) |  |  | (9,011 | )
Other |  |  | 375 |  |  |  | 260 |  |  |  | 572 |  |  |  | 509 |
Total other expense |  |  | (3,413 | ) |  |  | (5,903 | ) |  |  | (10,531 | ) |  |  | (6,871 | )
Income from continuing operations before income taxes |  |  | 128,881 |  |  |  | 46,606 |  |  |  | 371,170 |  |  |  | 99,226 |
Income tax expense (benefit): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Current |  |  | 6,795 |  |  |  | (1,748 | ) |  |  | 25,826 |  |  |  | (4,230 | )
Deferred |  |  | 40,158 |  |  |  | 18,980 |  |  |  | 110,159 |  |  |  | 40,368 |
Total income tax expense |  |  | 46,953 |  |  |  | 17,232 |  |  |  | 135,985 |  |  |  | 36,138 |
Income from continuing operations |  |  | 81,928 |  |  |  | 29,374 |  |  |  | 235,185 |  |  |  | 63,088 |
Loss from discontinued operations, net of income taxes |  |  | — |  |  |  | — |  |  |  | (367 | ) |  |  | — |
Net income |  | $ | 81,928 |  |  | $ | 29,374 |  |  | $ | 234,818 |  |  | $ | 63,088 |
Basic income (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.52 |  |  | $ | 0.41 |
Loss from discontinued operations, net of income taxes |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |
Net income |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.52 |  |  | $ | 0.41 |
Diluted income (loss) per common share: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.50 |  |  | $ | 0.41 |
Loss from discontinued operations, net of income taxes |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |
Net income |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.50 |  |  | $ | 0.41 |
Weighted average number of common shares outstanding: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Basic |  |  | 152,617 |  |  |  | 152,933 |  |  |  | 153,661 |  |  |  | 152,682 |
Diluted |  |  | 154,120 |  |  |  | 154,109 |  |  |  | 155,369 |  |  |  | 152,682 |
Cash dividends per common share |  | $ | 0.05 |  |  | $ | 0.05 |  |  | $ | 0.15 |  |  | $ | 0.15 |

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY

(unaudited, in thousands)

|  | Common Stock |  |  | Additional Paid-in Capital |  |  | Retained Earnings |  |  | Accumulated Other Comprehensive Income |  |  | Treasury Stock |  |  | Total |
|  | Number of Shares |  |  | Amount |  |  |  |  |  |
Balance, December 31, 2010 |  |  | 181,538 |  |  | $ | 1,815 |  |  | $ | 796,641 |  |  | $ | 1,987,999 |  |  | $ | 21,597 |  |  | $ | (620,445 | ) |  | $ | 2,187,607 |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 234,818 |  |  |  | — |  |  |  | — |  |  |  | 234,818 |
Foreign currency translation adjustment |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (3,460 | ) |  |  | — |  |  |  | (3,460 | )
Total comprehensive income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 234,818 |  |  |  | (3,460 | ) |  |  | — |  |  |  | 231,358 |
Issuance of restricted stock |  |  | 767 |  |  |  | 8 |  |  |  | (8 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Vesting of stock unit awards |  |  | 10 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeitures of restricted stock |  |  | (44 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercise of stock options |  |  | 838 |  |  |  | 8 |  |  |  | 14,032 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 14,040 |
Stock-based compensation |  |  | — |  |  |  | — |  |  |  | 15,366 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 15,366 |
Tax benefit related to stock-based compensation |  |  | — |  |  |  | — |  |  |  | 5,838 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 5,838 |
Payment of cash dividends |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (23,257 | ) |  |  | — |  |  |  | — |  |  |  | (23,257 | )
Purchases of treasury stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (4,219 | ) |  |  | (4,219 | )
Balance, September 30, 2011 |  |  | 183,109 |  |  | $ | 1,831 |  |  | $ | 831,869 |  |  | $ | 2,199,560 |  |  | $ | 18,137 |  |  | $ | (624,664 | ) |  | $ | 2,426,733 |

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY

(unaudited, in thousands)

|  | Common Stock |  |  | Additional Paid-in Capital |  |  | Retained Earnings |  |  | Accumulated Other Comprehensive Income |  |  | Treasury Stock |  |  | Total |
|  | Number of Shares |  |  | Amount |  |  |  |  |  |
Balance, December 31, 2009 |  |  | 180,829 |  |  | $ | 1,808 |  |  | $ | 781,635 |  |  | $ | 1,901,853 |  |  | $ | 14,996 |  |  | $ | (618,592 | ) |  | $ | 2,081,700 |
Comprehensive income: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 63,088 |  |  |  | — |  |  |  | — |  |  |  | 63,088 |
Foreign currency translation adjustment, net of tax of $2,814 |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 4,650 |  |  |  | — |  |  |  | 4,650 |
Total comprehensive income |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 63,088 |  |  |  | 4,650 |  |  |  | — |  |  |  | 67,738 |
Issuance of restricted stock |  |  | 646 |  |  |  | 6 |  |  |  | (6 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Vesting of stock unit awards |  |  | 7 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Forfeitures of restricted stock |  |  | (54 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Exercise of stock options |  |  | 34 |  |  |  | — |  |  |  | 290 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 290 |
Stock-based compensation |  |  | — |  |  |  | — |  |  |  | 11,881 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 11,881 |
Tax expense related to stock-based compensation |  |  | — |  |  |  | — |  |  |  | (2,535 | ) |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (2,535 | )
Payment of cash dividends |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (23,087 | ) |  |  | — |  |  |  | — |  |  |  | (23,087 | )
Purchases of treasury stock |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (1,848 | ) |  |  | (1,848 | )
Balance, September 30, 2010 |  |  | 181,462 |  |  | $ | 1,814 |  |  | $ | 791,265 |  |  | $ | 1,941,854 |  |  | $ | 19,646 |  |  | $ | (620,440 | ) |  | $ | 2,134,139 |

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(unaudited, in thousands)

|  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |
Cash flows from operating activities: |  |  |  |  |  |  |  |
Net income |  | $ | 234,818 |  |  | $ | 63,088 |
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |  |  |  |  |  |
Depreciation, depletion, amortization and impairment |  |  | 309,677 |  |  |  | 239,930 |
Provision for bad debts |  |  | — |  |  |  | (1,500 | )
Dry holes and abandonments |  |  | 221 |  |  |  | 479 |
Deferred income tax expense |  |  | 110,159 |  |  |  | 40,368 |
Stock-based compensation expense |  |  | 15,366 |  |  |  | 11,881 |
Net gain on asset disposals |  |  | (4,058 | ) |  |  | (21,940 | )
Tax expense related to stock-based compensation |  |  | — |  |  |  | (2,535 | )
Changes in operating assets and liabilities: |  |  |  |  |  |  |  |
Accounts receivable |  |  | (133,371 | ) |  |  | (97,455 | )
Income taxes receivable/payable |  |  | 76,018 |  |  |  | 114,209 |
Inventory and other assets |  |  | (10,625 | ) |  |  | (6,864 | )
Accounts payable |  |  | 58,020 |  |  |  | 31,674 |
Accrued expenses |  |  | 6,460 |  |  |  | 18,227 |
Other liabilities |  |  | (6,449 | ) |  |  | 2,218 |
Net cash provided by (used in) operating activities of discontinued operations |  |  | (339 | ) |  |  | 10,687 |
Net cash provided by operating activities |  |  | 655,897 |  |  |  | 402,467 |
Cash flows from investing activities: |  |  |  |  |  |  |  |
Purchases of property and equipment |  |  | (711,436 | ) |  |  | (513,679 | )
Proceeds from disposal of assets |  |  | 9,054 |  |  |  | 27,224 |
Net cash provided by investing activities of discontinued operations |  |  | 25,500 |  |  |  | 42,646 |
Net cash used in investing activities |  |  | (676,882 | ) |  |  | (443,809 | )
Cash flows from financing activities: |  |  |  |  |  |  |  |
Purchases of treasury stock |  |  | (4,219 | ) |  |  | (1,848 | )
Dividends paid |  |  | (23,257 | ) |  |  | (23,087 | )
Debt issuance costs |  |  | — |  |  |  | (10,328 | )
Proceeds from long-term debt |  |  | — |  |  |  | 100,000 |
Repayment of long-term debt |  |  | (3,750 | ) |  |  | — |
Borrowings under revolving credit facility |  |  | 15,800 |  |  |  | — |
Tax benefit related to stock-based compensation |  |  | 5,838 |  |  |  | — |
Proceeds from exercise of stock options |  |  | 14,040 |  |  |  | 290 |
Net cash provided by financing activities |  |  | 4,452 |  |  |  | 65,027 |
Effect of foreign exchange rate changes on cash |  |  | (434 | ) |  |  | 354 |
Net increase (decrease) in cash and cash equivalents |  |  | (16,967 | ) |  |  | 24,039 |
Cash and cash equivalents at beginning of period |  |  | 27,612 |  |  |  | 49,877 |
Cash and cash equivalents at end of period |  | $ | 10,645 |  |  | $ | 73,916 |
Supplemental disclosure of cash flow information: |  |  |  |  |  |  |  |
Net cash (paid) received during the period for: |  |  |  |  |  |  |  |
Interest expense, net of capitalized interest of $6,575 in 2011 and $0 in 2010 |  | $ | (5,695 | ) |  | $ | (3,031 | )
Income taxes |  | $ | 60,033 |  |  | $ | 115,661 |
Supplemental investing and financing information: |  |  |  |  |  |  |  |
Net increase in payables for purchases of property and equipment |  | $ | 48,106 |  |  | $ | 66,819 |
Net increase in deposits on equipment purchases |  | $ | (29,848 | ) |  | $ | (48,946 | )

The accompanying notes are an integral part of these unaudited consolidated financial statements.

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PATTERSON-UTI ENERGY, INC. AND SUBSIDIARIES

NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS

1. Basis of Consolidation and Presentation

The unaudited interim consolidated financial statements include the accounts of Patterson-UTI Energy, Inc. (the “Company”) and its wholly-owned subsidiaries. All significant intercompany accounts and transactions have been eliminated. Except for wholly-owned subsidiaries, the Company has no controlling financial interests in any entity which would require consolidation.

The unaudited interim consolidated financial statements have been prepared by management of the Company pursuant to the rules and regulations of the Securities and Exchange Commission. Certain information and footnote disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America have been omitted pursuant to such rules and regulations, although the Company believes the disclosures included either on the face of the financial statements or herein are sufficient to make the information presented not misleading. In the opinion of management, all adjustments which are of a normal recurring nature considered necessary for a fair statement of the information in conformity with accounting principles generally accepted in the United States have been included. The Unaudited Consolidated Balance Sheet as of December 31, 2010, as presented herein, was derived from the audited consolidated balance sheet of the Company, but does not include all disclosures required by accounting principles generally accepted in the United States of America. These unaudited consolidated financial statements should be read in conjunction with the consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2010. The results of operations for the three and nine months ended September 30, 2011 are not necessarily indicative of the results to be expected for the full year.

The U.S. dollar is the functional currency for all of the Company’s operations except for its Canadian operations, which uses the Canadian dollar as its functional currency. The effects of exchange rate changes are reflected in accumulated other comprehensive income, which is a separate component of stockholders’ equity.

The carrying values of cash and cash equivalents, trade receivables and accounts payable approximate fair value.

The Company provides a dual presentation of its net income (loss) per common share in its unaudited consolidated statements of operations: Basic net income (loss) per common share (“Basic EPS”) and diluted net income (loss) per common share (“Diluted EPS”).

Basic EPS excludes dilution and is computed by first allocating earnings between common stockholders and holders of non-vested shares of restricted stock. Basic EPS is then determined by dividing the earnings attributable to common stockholders by the weighted average number of common shares outstanding during the period, excluding non-vested shares of restricted stock.

Diluted EPS is based on the weighted average number of common shares outstanding plus the dilutive effect of potential common shares, including stock options, non-vested shares of restricted stock and restricted stock units. The dilutive effect of stock options and restricted stock units is determined using the treasury stock method. The dilutive effect of non-vested shares of restricted stock is based on the more dilutive of the treasury stock method or the two-class method, assuming a reallocation of undistributed earnings to common stockholders after considering the dilutive effect of potential common shares other than non-vested shares of restricted stock.

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The following table presents information necessary to calculate income from continuing operations per share, loss from discontinued operations per share and net income per share for the three and nine months ended September 30, 2011 and 2010 as well as potentially dilutive securities excluded from the weighted average number of diluted common shares outstanding, as their inclusion would have been anti-dilutive (in thousands, except per share amounts):

|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
BASIC EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations |  | $ | 81,928 |  |  | $ | 29,374 |  |  | $ | 235,185 |  |  | $ | 63,088 |
Adjust for income attributed to holders of non-vested restricted stock |  |  | (705 | ) |  |  | (224 | ) |  |  | (1,841 | ) |  |  | (476 | )
Income from continuing operations attributed to common stockholders |  | $ | 81,223 |  |  | $ | 29,150 |  |  | $ | 233,344 |  |  | $ | 62,612 |
Loss from discontinued operations, net |  | $ | — |  |  | $ | — |  |  | $ | (367 | ) |  | $ | — |
Adjust for loss attributed to holders of non-vested restricted stock |  |  | — |  |  |  | — |  |  |  | 3 |  |  |  | — |
Loss from discontinued operations attributed to common stockholders |  | $ | — |  |  | $ | — |  |  | $ | (364 | ) |  | $ | — |
Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock |  |  | 152,617 |  |  |  | 152,933 |  |  |  | 153,661 |  |  |  | 152,682 |
Basic income from continuing operations per common share |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.52 |  |  | $ | 0.41 |
Basic loss from discontinued operations per common share |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |
Basic net income per common share |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.52 |  |  | $ | 0.41 |
DILUTED EPS: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income from continuing operations attributed to common stockholders |  | $ | 81,223 |  |  | $ | 29,150 |  |  | $ | 233,344 |  |  | $ | 62,612 |
Add incremental earnings related to potential common shares |  |  | 6 |  |  |  | 1 |  |  |  | — |  |  |  | — |
Adjusted income from continuing operations attributed to common stockholders |  | $ | 81,229 |  |  | $ | 29,151 |  |  | $ | 233,344 |  |  | $ | 62,612 |
Weighted average number of common shares outstanding, excluding non-vested shares of restricted stock |  |  | 152,617 |  |  |  | 152,933 |  |  |  | 153,661 |  |  |  | 152,682 |
Add dilutive effect of potential common shares |  |  | 1,503 |  |  |  | 1,176 |  |  |  | 1,708 |  |  |  | — |
Weighted average number of diluted common shares outstanding |  |  | 154,120 |  |  |  | 154,109 |  |  |  | 155,369 |  |  |  | 152,682 |
Diluted income from continuing operations per common share |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.50 |  |  | $ | 0.41 |
Diluted loss from discontinued operations per common share |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |  |  | $ | 0.00 |
Diluted net income per common share |  | $ | 0.53 |  |  | $ | 0.19 |  |  | $ | 1.50 |  |  | $ | 0.41 |
Potentially dilutive securities excluded as anti-dilutive |  |  | 410 |  |  |  | 4,644 |  |  |  | 1,707 |  |  |  | 6,726 |

2. Discontinued Operations

On January 27, 2011, the stock of the Company’s electric wireline subsidiary, Universal Wireline, Inc., was sold in a cash transaction for $25.5 million. Except for inventory, the working capital of Universal Wireline, Inc. was excluded from the sale and retained by a subsidiary of the Company. Universal Wireline, Inc. was formed in 2010 to acquire the electric wireline business of Key Energy Services, Inc., as discussed in Note 3. The results of operations of this business have been presented as results of discontinued operations in these consolidated financial statements. As of December 31, 2010, the assets to be disposed of were classified as held for sale and are presented separately within current assets under the caption “Assets held for sale” in the consolidated balance sheet. Upon being classified as held for sale, the assets to be disposed of were recorded at fair value less estimated costs to sell resulting in a charge of $2.2 million. Due to the fact that the carrying value of the assets had been adjusted to net realizable value during 2010, no significant additional gain or loss was recognized in connection with the sale in 2011.

On January 20, 2010, the Company exited the drilling and completion fluids business, which had previously been presented as one of the Company’s reportable operating segments. On that date, the Company’s wholly owned subsidiary, Ambar Lone Star Fluid Services LLC, completed the sale of substantially all of its assets, excluding billed accounts receivable. The sales price was approximately $42.6 million. Upon the Company’s exit from the drilling and completion fluids business, the Company classified its drilling and completion fluids operating segment as a discontinued operation and an impairment loss was recognized in 2009 to reduce the carrying value of the assets to be disposed of to fair value less estimated costs to sell and no significant gain or loss was recognized in connection with the sale in 2010. The results of operations of this business have been reclassified and presented as results of discontinued operations for all periods presented in these consolidated financial statements.

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Summarized operating results from discontinued operations for the three and nine months ended September 30, 2011, and 2010 are shown below (in thousands):

|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Electric wireline revenues |  | $ | — |  |  | $ | — |  |  | $ | 1,104 |  |  | $ | — |
Drilling and completion fluids revenues |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 3,737 |
Operating revenues from discontinued operations |  | $ | — |  |  | $ | — |  |  | $ | 1,104 |  |  | $ | 3,737 |
Loss before income taxes |  | $ | — |  |  | $ | — |  |  | $ | (576 | ) |  | $ | — |
Income tax benefit |  |  | — |  |  |  | — |  |  |  | 209 |  |  |  | — |
Loss from discontinued operations, net of income tax |  | $ | — |  |  | $ | — |  |  | $ | (367 | ) |  | $ | — |

3. Acquisitions

On October 1, 2010, two subsidiaries of the Company, Universal Pressure Pumping, Inc. and Universal Wireline, Inc., completed the acquisition of certain assets from Key Energy Pressure Pumping Services, LLC and Key Electric Wireline Services, LLC relating to the businesses of providing pressure pumping services and electric wireline services to participants in the oil and natural gas industry. This acquisition expanded the Company’s pressure pumping operations to additional markets primarily in Texas. As discussed in Note 2, the electric wireline business was classified as held for sale at December 31, 2010 and was subsequently sold on January 27, 2011. Results of operations of the acquired pressure pumping business are included in the Company’s consolidated results of operations from the date of acquisition. The consolidated statement of operations includes revenues from the acquired pressure pumping business of $127 million and $324 million for the three and nine months ended September 30, 2011, respectively. The consolidated statement of operations includes income from operations from the acquired pressure pumping business of $28.0 million and $77.9 million for the three and nine months ended September 30, 2011, respectively.

4. Stock-based Compensation

The Company uses share-based payments to compensate employees and non-employee directors. The Company recognizes the cost of share-based payments under the fair-value-based method. Share-based awards consist of equity instruments in the form of stock options, restricted stock or restricted stock units and have included service and, in certain cases, performance conditions. The Company’s share-based awards also include both cash-settled and share-settled performance unit awards. Cash-settled performance unit awards are accounted for as liability awards. Share-settled performance unit awards are accounted for as equity awards. The Company issues shares of common stock when vested stock options are exercised, when restricted stock is granted and when restricted stock units and share-settled performance unit awards vest.

Stock Options. The Company estimates the grant date fair values of stock options using the Black-Scholes-Merton valuation model. Volatility assumptions are based on the historic volatility of the Company’s common stock over the most recent period equal to the expected term of the options as of the date the options are granted. The expected term assumptions are based on the Company’s experience with respect to employee stock option activity. Dividend yield assumptions are based on the expected dividends at the time the options are granted. The risk-free interest rate assumptions are determined by reference to United States Treasury yields. No stock options were granted in the three month periods ended September 30, 2011 and 2010. Weighted-average assumptions used to estimate the grant date fair values for stock options granted in the nine month periods ended September 30, 2011 and 2010 follow:

|  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |
Volatility |  |  | 45.97 | % |  |  | 45.98 | %
Expected term (in years) |  |  | 5.00 |  |  |  | 5.00 |
Dividend yield |  |  | 0.67 | % |  |  | 1.35 | %
Risk-free interest rate |  |  | 2.34 | % |  |  | 2.47 | %

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Stock option activity from January 1, 2011 to September 30, 2011 follows:

|  | Underlying Shares |  |  | Weighted Average Exercise Price |
Outstanding at January 1, 2011 |  |  | 7,710,102 |  |  | $ | 19.58 |
Granted |  |  | 419,500 |  |  | $ | 30.28 |
Exercised |  |  | (838,307 | ) |  | $ | 16.75 |
Outstanding at September 30, 2011 |  |  | 7,291,295 |  |  | $ | 20.52 |
Exercisable at September 30, 2011 |  |  | 6,112,320 |  |  | $ | 20.63 |

Restricted Stock. For all restricted stock awards to date, shares of common stock were issued when the awards were made. Non-vested shares are subject to forfeiture for failure to fulfill service conditions and, in certain cases, performance conditions. Non-forfeitable dividends are paid on non-vested shares of restricted stock. For restricted stock awards made prior to 2008, the Company uses the “graded-vesting” attribution method to recognize periodic compensation cost over the vesting period. For restricted stock awards made in 2008 and thereafter, the Company uses the straight-line method to recognize periodic compensation cost over the vesting period.

Restricted stock activity from January 1, 2011 to September 30, 2011 follows:

|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Non-vested restricted stock outstanding at January 1, 2011 |  |  | 1,114,051 |  |  | $ | 16.05 |
Granted |  |  | 767,300 |  |  | $ | 30.71 |
Vested |  |  | (538,508 | ) |  | $ | 17.85 |
Forfeited |  |  | (44,858 | ) |  | $ | 21.57 |
Non-vested restricted stock outstanding at September 30, 2011 |  |  | 1,297,985 |  |  | $ | 23.78 |

Restricted Stock Units. For all restricted stock unit awards made to date, shares of common stock will not be issued until the units vest. Restricted stock units are subject to forfeiture for failure to fulfill service conditions. Non-forfeitable cash dividend equivalents are paid on non-vested restricted stock units.

Restricted stock unit activity from January 1, 2011 to September 30, 2011 follows:

|  | Shares |  |  | Weighted Average Grant Date Fair Value |
Non-vested restricted stock units outstanding at January 1, 2011 |  |  | 17,834 |  |  | $ | 19.73 |
Granted |  |  | 10,000 |  |  | $ | 30.63 |
Vested |  |  | (10,333 | ) |  | $ | 23.94 |
Forfeited |  |  | — |  |  | $ | — |
Non-vested restricted stock units outstanding at September 30, 2011 |  |  | 17,501 |  |  | $ | 23.47 |

Performance Unit Awards. In 2009, the Company granted cash-settled performance unit awards to certain executive officers (the “2009 Performance Units”). The 2009 Performance Units provide for those executive officers to receive a cash payment upon the achievement of certain performance goals established by the Company during a specified period. The performance period for the 2009 Performance Units is the period from April 1, 2009 through March 31, 2012, but can extend through March 31, 2014 in certain circumstances. The performance goals for the 2009 Performance Units are tied to the Company’s total shareholder return for the performance period as compared to total shareholder return for a peer group determined by the Compensation Committee of the Board of Directors. These goals are considered to be market conditions under the relevant accounting standards and the market conditions are factored into the determination of the fair value of the performance units. Generally, the recipients will receive a base payment if the Company’s total shareholder return is positive and, when compared to the peer group, is at or above the 25 th percentile but less than the 50 th percentile, two times the base if at or above the 50 th percentile but less than the 75 th percentile, and four times the base if at the 75 th percentile or higher. The total base amount with respect to the 2009 Performance Units is approximately $1.7 million. Because the 2009 Performance Units are to be settled in cash at the end of the performance period, they are accounted for as liability awards and the Company’s pro-rated obligation is measured at estimated fair value at the end of each reporting period using a Monte Carlo simulation model. As of September 30, 2011 this pro-rated obligation was approximately $4.6 million and is included in the

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caption “accrued expenses” in the liabilities section of the consolidated balance sheet. For the 2009 Performance Units, no compensation expense was recognized for the three month period ended September 30, 2011 and approximately $2.2 million in compensation expense was recognized for the nine month period ended September 30, 2011. Compensation expense associated with the 2009 Performance Units was approximately $751,000 and $808,000 for the three and nine month periods ended September 30, 2010, respectively.

In 2010 and 2011, the Company granted stock-settled performance unit awards to certain executive officers (the “2010 Performance Units” and the “2011 Performance Units”, respectively). The 2010 Performance Units and the 2011 Performance Units provide for those executive officers to receive a grant of shares of stock upon the achievement of certain performance goals established by the Company during a specified period. The performance period for the 2010 Performance Units is the period from April 1, 2010 through March 31, 2013, but can extend through March 31, 2015 in certain circumstances. The performance period for the 2011 Performance Units is the period from April 1, 2011 through March 31, 2014, but can extend through March 31, 2016 in certain circumstances. The performance goals for the 2010 Performance Units and the 2011 Performance Units are tied to the Company’s total shareholder return for the performance period as compared to total shareholder return for a peer group determined by the Compensation Committee of the Board of Directors. These goals are considered to be market conditions under the relevant accounting standards and the market conditions are factored into the determination of the fair value of the respective performance units. Generally, the recipients will receive a base number of shares if the Company’s total shareholder return is positive and, when compared to the peer group, is at the 25 th percentile, two times the base if at the 50 th percentile, and four times the base if at the 75 th percentile or higher. The grant of shares when achievement is between the 25 th and 75 th percentile will be determined on a pro-rata basis. The total base number of shares with respect to the 2010 Performance Units is 89,375 shares and the total base number of shares with respect to the 2011 Performance Units is 72,188 shares. Because the 2010 and 2011 Performance Units are stock-settled awards, they are accounted for as equity awards and measured at fair value on the date of grant using a Monte Carlo simulation model. The fair value of the 2010 Performance Units as of the date of grant was approximately $3.1 million and the fair value of the 2011 Performance Units as of the date of grant was approximately $5.6 million. This fair value is recognized on a straight-line basis over the performance period. Compensation expense associated with the 2010 Performance Units was approximately $260,000 and $779,000 for the three and nine month periods ended September 30, 2011, respectively. Compensation expense associated with the 2011 Performance Units was approximately $464,000 and $928,000 for the three and nine month periods ended September 30, 2011.

5. Property and Equipment

Property and equipment consisted of the following at September 30, 2011 and December 31, 2010 (in thousands):

|  | September 30, 2011 |  |  | December 31, 2010 |
Equipment |  | $ | 4,537,408 |  |  | $ | 3,972,891 |
Oil and natural gas properties |  |  | 122,484 |  |  |  | 110,749 |
Buildings |  |  | 62,887 |  |  |  | 61,425 |
Land |  |  | 11,209 |  |  |  | 11,074 |
|  |  | 4,733,988 |  |  |  | 4,156,139 |
Less accumulated depreciation and depletion |  |  | (1,708,382 | ) |  |  | (1,535,239 | )
Property and equipment, net |  | $ | 3,025,606 |  |  | $ | 2,620,900 |

During the nine months ended September 30, 2011 and 2010, in connection with its ongoing planning process, the Company evaluated its then-current fleet of marketable drilling rigs and identified 22 and four rigs, respectively, that it determined would no longer be marketed as rigs. The components comprising these rigs were evaluated, and those components with continuing utility to the Company’s other marketed rigs were transferred to other rigs or yards to be used as spare equipment. The remaining components of these rigs were impaired and the associated net book value of $4.3 million in 2011 and $4.2 million in 2010 was expensed in the Company’s consolidated statements of operations as an impairment charge. The impaired components were estimated to have no fair value.

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6. Business Segments

The Company’s revenues, operating profits and identifiable assets are primarily attributable to three business segments: (i) contract drilling of oil and natural gas wells, (ii) pressure pumping services and (iii) the investment, on a working interest basis, in oil and natural gas properties. Each of these segments represents a distinct type of business. These segments have separate management teams which report to the Company’s chief operating decision maker. The results of operations in these segments are regularly reviewed by the chief operating decision maker for purposes of determining resource allocation and assessing performance. As discussed in Note 2, in January 2010 the Company exited the drilling and completion fluids business which previously was reported as a business segment. Operating results for that business are presented as discontinued operations in the consolidated statements of operations. Also included in discontinued operations are the operating results for an electric wireline business that was acquired on October 1, 2010 and sold in January 2011. Separate financial data for each of our business segments is provided in the table below (in thousands):

|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 437,723 |  |  | $ | 291,597 |  |  | $ | 1,203,370 |  |  | $ | 743,967 |
Pressure pumping |  |  | 225,164 |  |  |  | 81,104 |  |  |  | 604,954 |  |  |  | 194,219 |
Oil and natural gas |  |  | 11,837 |  |  |  | 6,800 |  |  |  | 35,678 |  |  |  | 21,564 |
Total segment revenues |  |  | 674,724 |  |  |  | 379,501 |  |  |  | 1,844,002 |  |  |  | 959,750 |
Elimination of intercompany revenues (a) |  |  | (896 | ) |  |  | (838 | ) |  |  | (2,706 | ) |  |  | (2,497 | )
Total revenues |  | $ | 673,828 |  |  | $ | 378,663 |  |  | $ | 1,841,296 |  |  | $ | 957,253 |
Income before income taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 85,708 |  |  | $ | 41,479 |  |  | $ | 251,362 |  |  | $ | 72,279 |
Pressure pumping |  |  | 50,426 |  |  |  | 17,586 |  |  |  | 142,144 |  |  |  | 28,769 |
Oil and natural gas |  |  | 4,754 |  |  |  | 2,465 |  |  |  | 16,701 |  |  |  | 8,209 |
|  |  | 140,888 |  |  |  | 61,530 |  |  |  | 410,207 |  |  |  | 109,257 |
Corporate and other |  |  | (10,031 | ) |  |  | (9,271 | ) |  |  | (32,564 | ) |  |  | (25,100 | )
Net gain on asset disposals (b) |  |  | 1,437 |  |  |  | 250 |  |  |  | 4,058 |  |  |  | 21,940 |
Interest income |  |  | 47 |  |  |  | 64 |  |  |  | 135 |  |  |  | 1,631 |
Interest expense |  |  | (3,835 | ) |  |  | (6,227 | ) |  |  | (11,238 | ) |  |  | (9,011 | )
Other |  |  | 375 |  |  |  | 260 |  |  |  | 572 |  |  |  | 509 |
Income from continuing operations before income taxes |  | $ | 128,881 |  |  | $ | 46,606 |  |  | $ | 371,170 |  |  | $ | 99,226 |

|  | September 30, 2011 |  |  | December 31, 2010 |
Identifiable assets: |  |  |  |  |  |  |  |
Contract drilling |  | $ | 3,104,012 |  |  | $ | 2,678,250 |
Pressure pumping |  |  | 691,798 |  |  |  | 533,597 |
Oil and natural gas |  |  | 40,883 |  |  |  | 36,508 |
Corporate and other (c) |  |  | 150,000 |  |  |  | 174,676 |
Total assets |  | $ | 3,986,693 |  |  | $ | 3,423,031 |

(a) | Consists of contract drilling intercompany revenues for drilling services provided to the oil and natural gas exploration and production segment.

(b) | Net gains or losses associated with the disposal of assets relate to corporate strategy decisions of the executive management group. Accordingly, the related gains or losses have been separately presented and excluded from the results of specific segments.

(c) | Corporate and other assets at December 31, 2010 primarily include assets held for sale as well as cash on hand, income taxes receivable and certain deferred tax assets. Corporate and other assets at September 30, 2011 primarily include cash on hand and certain deferred tax assets.

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7. Goodwill and Intangible Assets

Goodwill — Goodwill by operating segment as of September 30, 2011 and changes for the nine months then ended are as follows (in thousands):

|  | January 1, Balance |  |  | Changes to Goodwill |  |  | September 30, Balance |
Contract Drilling: |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 86,234 |  |  | $ | — |  |  | $ | 86,234 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |
Net goodwill in contract drilling segment |  |  | 86,234 |  |  |  | — |  |  |  | 86,234 |
Pressure Pumping: |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  |  | 67,575 |  |  |  | — |  |  |  | 67,575 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |
Net goodwill in pressure pumping segment |  |  | 67,575 |  |  |  | — |  |  |  | 67,575 |
Total goodwill |  | $ | 153,809 |  |  | $ | — |  |  | $ | 153,809 |

Goodwill by operating segment as of September 30, 2010 and changes for the nine months then ended are as follows (in thousands):

|  | January 1, Balance |  |  | Changes to Goodwill |  |  | September 30, Balance |
Contract Drilling: |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | $ | 86,234 |  |  | $ | — |  |  | $ | 86,234 |
Accumulated impairment losses |  |  | — |  |  |  | — |  |  |  | — |
Net goodwill in contract drilling segment |  |  | 86,234 |  |  |  | — |  |  |  | 86,234 |
Total goodwill |  | $ | 86,234 |  |  | $ | — |  |  | $ | 86,234 |

Goodwill of $67.6 million was recorded in the fourth quarter of 2010 as a result of the Company’s acquisition of the pressure pumping business of Key Energy Services, Inc. on October 1, 2010. Approximately $53.2 million of this goodwill is expected to be deductible for tax purposes.

Goodwill is evaluated at least annually on December 31 to determine if the fair value of recorded goodwill has decreased below its carrying value. For purposes of impairment testing, goodwill is evaluated at the reporting unit level. The Company’s reporting units for impairment testing have been determined to be its operating segments. In the event that market conditions weaken in the future, the Company may be required to record impairments of goodwill in its contract drilling or pressure pumping reporting units, and such impairment could be material.

Intangible Assets — Intangible assets of $26.9 million were recorded in the pressure pumping operating segment in connection with the Company’s acquisition of a pressure pumping business on October 1, 2010. As a result of the purchase price allocation, the Company recorded intangible assets related to a non-compete agreement and the customer relationships acquired. These intangible assets were recorded at fair value on the date of acquisition.

The non-compete agreement has a term of three years from October 1, 2010. The value of this agreement was estimated using a with and without scenario where cash flows were projected through the term of the agreement assuming the agreement is in place and compared to cash flows assuming the non-compete agreement was not in place. The intangible asset associated with the non-compete agreement is being amortized on a straight-line basis over the three-year term of the agreement. Amortization expense of $117,000 and $350,000 was recorded in the three and nine months ended September 30, 2011, respectively, associated with the non-compete agreement.

The value of the customer relationships was estimated using a multi-period excess earnings model to determine the present value of the projected cash flows associated with the customers in place at the time of the acquisition and taking into account a contributory asset charge. The resulting intangible asset is being amortized on a straight-line basis over seven years. Amortization expense of $911,000 and $2.7 million was recorded in the three and nine months ended September 30, 2011, respectively, associated with customer relationships.

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The following table sets forth the activity with respect to intangible assets for the nine months ended September 30, 2011 (in thousands):

|  | January 1, Balance |  |  | Amortization |  |  | September 30, Balance |
Non-compete agreement |  | $ | 1,400 |  |  | $ | — |  |  | $ | 1,400 |
Accumulated amortization |  |  | (116 | ) |  |  | (350 | ) |  |  | (466 | )
Net non-compete agreement |  |  | 1,284 |  |  |  | (350 | ) |  |  | 934 |
Customer relationships |  |  | 25,500 |  |  |  | — |  |  |  | 25,500 |
Accumulated amortization |  |  | (910 | ) |  |  | (2,732 | ) |  |  | (3,642 | )
Net customer relationships |  |  | 24,590 |  |  |  | (2,732 | ) |  |  | 21,858 |
Total intangible assets, net (excluding goodwill) |  | $ | 25,874 |  |  | $ | (3,082 | ) |  | $ | 22,792 |

8. Accrued Expenses

Accrued expenses consisted of the following at September 30, 2011 and December 31, 2010 (in thousands):

|  | September 30, 2011 |  |  | December 31, 2010 |
Salaries, wages, payroll taxes and benefits |  | $ | 37,425 |  |  | $ | 39,866 |
Workers’ compensation liability |  |  | 65,935 |  |  |  | 63,011 |
Property, sales, use and other taxes |  |  | 13,763 |  |  |  | 6,682 |
Insurance, other than workers’ compensation |  |  | 6,018 |  |  |  | 12,648 |
Accrued interest payable |  |  | 8,609 |  |  |  | 4,879 |
Deferred revenue – current |  |  | 7,229 |  |  |  | 10,220 |
2009 Performance Unit Awards |  |  | 4,563 |  |  |  | — |
Other |  |  | 8,759 |  |  |  | 10,009 |
|  | $ | 152,301 |  |  | $ | 147,315 |

Deferred revenue was recorded in the fourth quarter of 2010 in the purchase price allocation associated with the Company’s acquisition of a pressure pumping business as discussed in Note 3. The deferred revenue relates to out-of-market pricing agreements that were in place at the acquired business at the time of the acquisition. The deferred revenue is recognized as pressure pumping revenue over the remaining term of the pricing agreements. Deferred revenue of approximately $1.8 million and $6.6 million was recognized in the three and nine months ended September 30, 2011, respectively, related to these pricing agreements.

9. Asset Retirement Obligation

The Company records a liability for the estimated costs to be incurred in connection with the abandonment of oil and natural gas properties in the future. This liability is included in the caption “other” in the liabilities section of the consolidated balance sheet. The following table describes the changes to the Company’s asset retirement obligations during the nine months ended September 30, 2011 and 2010 (in thousands):

|  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |
Balance at beginning of year |  | $ | 3,063 |  |  | $ | 2,955 |
Liabilities incurred |  |  | 223 |  |  |  | 279 |
Liabilities settled |  |  | (80 | ) |  |  | (331 | )
Accretion expense |  |  | 106 |  |  |  | 83 |
Revision in estimated costs of plugging oil and natural gas wells |  |  | (2 | ) |  |  | — |
Asset retirement obligation at end of period |  | $ | 3,310 |  |  | $ | 2,986 |

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10. Long Term Debt

On August 19, 2010, the Company entered into a Credit Agreement (the “2010 Credit Agreement”) among the Company, as borrower, Wells Fargo Bank, N.A., as administrative agent, letter of credit issuer, swing line lender and lender, and each of the other letter of credit issuer and lender parties thereto. The 2010 Credit Agreement is a committed senior unsecured credit facility that includes a revolving credit facility and a term loan facility.

The revolving credit facility permits aggregate borrowings of up to $400 million and contains a letter of credit facility that is limited to $150 million and a swing line facility that is limited to $40 million. Subject to customary conditions, the Company may request that the lenders’ aggregate commitments with respect to the revolving credit facility be increased by up to $100 million, not to exceed total commitments of $500 million. The maturity date for the revolving facility is August 19, 2013.

The term loan facility provided for a loan of $100 million which was funded on August 19, 2010. The term loan facility is payable in quarterly principal installments commencing November 19, 2010. The installment amounts vary from 1.25% of the original principal amount for each of the first four quarterly installments, 2.50% of the original principal amount for each of the subsequent eight quarterly installments, 5.00% of the original principal amount for the next subsequent three quarterly installments, with the remainder becoming due at maturity. The maturity date for the term loan facility is August 19, 2014.

Loans under the 2010 Credit Agreement bear interest by reference, at the Company’s election, to the LIBOR rate or base rate. The applicable margin on LIBOR rate loans varies from 2.75% to 3.75% and the applicable margin on base rate loans varies from 1.75% to 2.75%, in each case determined based upon the Company’s debt to capitalization ratio. As of September 30, 2011, the applicable margin on LIBOR rate loans was 2.75% and the applicable margin on base rate loans was 1.75%. A letter of credit fee is payable by the Company equal to the applicable margin for LIBOR rate loans times the daily amount available to be drawn under outstanding letters of credit. The commitment fee payable to the lenders for the unused portion of the revolving credit facility varies from 0.50% to 0.75% based upon the Company’s debt to capitalization ratio and was 0.50% as of September 30, 2011.

Each domestic subsidiary of the Company other than any immaterial subsidiary has unconditionally guaranteed all existing and future indebtedness and liabilities of the Company and the other guarantors arising under the 2010 Credit Agreement and other loan documents. Such guarantees also cover obligations of the Company and any subsidiary of the Company arising under any interest rate swap contract with any person while such person is a lender or affiliate of a lender under the 2010 Credit Agreement.

The 2010 Credit Agreement contains customary representations, warranties, indemnities and affirmative and negative covenants. The 2010 Credit Agreement also requires compliance with two financial covenants. The Company must not permit its debt to capitalization ratio to exceed 45% at any time. The 2010 Credit Agreement generally defines the debt to capitalization ratio as the ratio of (a) total borrowed money indebtedness to (b) the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. The Company also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 3.00 to 1.00. The 2010 Credit Agreement generally defines the interest coverage ratio as the ratio of earnings before interest, taxes, depreciation and amortization (“EBITDA”) of the four prior fiscal quarters to interest charges for the same period. The Company does not expect that the restrictions and covenants will impact its ability to operate or react to opportunities that might arise.

As of September 30, 2011, the Company had approximately $95.0 million principal amount outstanding under the term loan facility at an interest rate of 3.125% and approximately $15.8 million principal amount outstanding under the revolving credit facility at an interest rate of 5.00%. The carrying value of the balances outstanding under the term loan facility and the revolving credit facility approximate fair value due to the frequency at which the interest rate resets. The Company had $40.6 million in letters of credit outstanding at September 30, 2011 and, as a result, had available borrowing capacity under the revolving credit facility of approximately $344 million at that date.

Senior Notes — On October 5, 2010, the Company completed the issuance and sale of $300 million in aggregate principal amount of its 4.97% Series A Senior Notes due October 5, 2020 (the “Notes”) in a private placement. A portion of the proceeds from the Notes was used to repay a $200 million borrowing on the Company’s revolving credit facility, which had been drawn to fund a portion of the acquisition that closed on October 1, 2010 as discussed in Note 3. The fair value of the Notes at September 30, 2011 was approximately $321 million based on discounted cash flows associated with the Notes using current market rates of interest. The Notes are senior unsecured obligations of the Company which rank equally in right of payment with all other unsubordinated indebtedness of the Company. The Notes are guaranteed on a senior unsecured basis by each of the existing domestic subsidiaries of the Company other than immaterial subsidiaries.

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The Notes bear interest at a rate of 4.97% per annum and were priced at 100% of the principal amount of the Notes. The Company will pay interest on the Notes on April 5 and October 5 of each year. The Notes will mature on October 5, 2020. The Notes are prepayable at the Company’s option, in whole or in part, provided that in the case of a partial prepayment, prepayment must be in an amount not less than 5% of the aggregate principal amount of the Notes then outstanding, at any time and from time to time at 100% of the principal amount prepaid, plus accrued and unpaid interest to the prepayment date, plus a “make-whole” premium as specified in the note purchase agreement. The Company must offer to prepay the Notes upon the occurrence of any change of control. In addition, the Company must offer to prepay the Notes upon the occurrence of certain asset dispositions if the proceeds therefrom are not timely reinvested in productive assets. If any offer to prepay is accepted, the purchase price of each prepaid Note is 100% of the principal amount thereof, plus accrued and unpaid interest thereon to the prepayment date.

The note purchase agreement requires compliance with two financial covenants. The Company must not permit its debt to capitalization ratio to exceed 50% at any time. The note purchase agreement generally defines the debt to capitalization ratio as the ratio of (a) total borrowed money indebtedness to (b) the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. The Company also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 2.50 to 1.00. The note purchase agreement generally defines the interest coverage ratio as the ratio for the four prior quarters of EBITDA to interest charges for that same period. The Company does not expect that the restrictions and covenants will impair its ability to operate or react to opportunities that might arise.

Events of default under the note purchase agreement include failure to pay principal or interest when due, failure to comply with the financial and operational covenants, a cross default event, a judgment in excess of a threshold event, the guaranty agreement ceasing to be enforceable, the occurrence of certain ERISA events, a change of control event and bankruptcy and other insolvency events. If an event of default occurs and is continuing, then holders of a majority in principal amount of the Notes have the right to declare all the Notes then-outstanding to be immediately due and payable. In addition, if the Company defaults in payments on any Note, then until such defaults are cured, the holder thereof may declare all the Notes held by it to be immediately due and payable.

The Company incurred approximately $10.8 million in debt issuance costs during 2010 in connection with the 2010 Credit Agreement and the Senior Notes discussed above. These costs were deferred and will be recognized as interest expense over the term of the underlying debt. Interest expense related to the amortization of debt issuance costs for the 2010 Credit Agreement and the Senior Notes was approximately $604,000 and $1.8 million for the three and nine months ended September 30, 2011, respectively.

Presented below is a schedule of the principal repayment requirements of long-term debt by fiscal year as of September 30, 2011 (in thousands):

Year ending December 31, |  |  |  |
2011 |  | $ | 2,500 |
2012 |  |  | 10,000 |
2013 |  |  | 28,300 |
2014 |  |  | 70,000 |
2015 |  |  | — |
Thereafter |  |  | 300,000 |
Total |  | $ | 410,800 |

11. Commitments, Contingencies and Other Matters

As of September 30, 2011, the Company maintained letters of credit in the aggregate amount of $40.6 million for the benefit of various insurance companies as collateral for retrospective premiums and retained losses which could become payable under the terms of the underlying insurance contracts. These letters of credit expire annually at various times during the year and are typically renewed. As of September 30, 2011, no amounts had been drawn under the letters of credit.

As of September 30, 2011, the Company had commitments to purchase approximately $370 million of major equipment.

The Company is party to various legal proceedings arising in the normal course of its business. The Company does not believe that the outcome of these proceedings, either individually or in the aggregate, will have a material adverse effect on its financial condition, results of operations or cash flows.

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12. Stockholders’ Equity

Cash Dividends — The Company paid cash dividends during the nine months ended September 30, 2010 and 2011 as follows:

2010: |  | Per Share |  |  | Total |
|  |  |  |  |  |  | (in thousands | )
Paid on March 30, 2010 |  | $ | 0.05 |  |  | $ | 7,677 |
Paid on June 30, 2010 |  |  | 0.05 |  |  |  | 7,706 |
Paid on September 30, 2010 |  |  | 0.05 |  |  |  | 7,704 |
Total cash dividends |  | $ | 0.15 |  |  | $ | 23,087 |

2011: |  | Per Share |  |  | Total |
|  |  |  |  |  |  | (in thousands | )
Paid on March 30, 2011 |  | $ | 0.05 |  |  | $ | 7,708 |
Paid on June 30, 2011 |  |  | 0.05 |  |  |  | 7,772 |
Paid on September 30, 2011 |  |  | 0.05 |  |  |  | 7,777 |
Total cash dividends |  | $ | 0.15 |  |  | $ | 23,257 |

On October 26, 2011, the Company’s Board of Directors approved a cash dividend on its common stock in the amount of $0.05 per share to be paid on December 30, 2011 to holders of record as of December 15, 2011. The amount and timing of all future dividend payments, if any, is subject to the discretion of the Board of Directors and will depend upon business conditions, results of operations, financial condition, terms of the Company’s credit facilities and other factors.

On August 1, 2007, the Company’s Board of Directors approved a stock buyback program authorizing purchases of up to $250 million of the Company’s common stock in open market or privately negotiated transactions. During the nine months ended September 30, 2011, 8,025 shares were purchased under the program at a cost of approximately $242,000. As of September 30, 2011, the Company is authorized to purchase approximately $113 million of the Company’s outstanding common stock under the program. Shares purchased under the program are accounted for as treasury stock.

The Company purchased 130,921 shares of treasury stock from employees during the nine months ended September 30, 2011. These shares were purchased at fair market value upon the vesting of restricted stock to provide the employees with the funds necessary to satisfy payroll tax withholding obligations. The total purchase price for these shares was approximately $4.0 million. These purchases were made pursuant to the terms of the Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan and not pursuant to the stock buyback program.

13. Income Taxes

The asset and liability method is used in accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for operating loss and tax credit carryforwards and for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. The Company’s net current deferred tax asset is comprised primarily of net operating loss carryforwards, and the net deferred tax liability is comprised primarily of the difference between the financial statement carrying amount and the tax basis of property and equipment. The increase in the net deferred tax asset during the nine months ended September 30, 2011 is due to net operating losses for tax purposes that are the result of accelerated depreciation on 2011 capital expenditures. The increase in the net deferred tax liability during the nine months ended September 30, 2011 includes the impact of the difference between the financial statement carrying amount and tax basis of property and equipment resulting from the acceleration of depreciation on 2011 capital expenditures. The accelerated tax depreciation includes the temporary 100% expensing of qualified property placed in service in 2011 provided for by the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010.

On January 1, 2010, the Company converted its Canadian operations from a Canadian branch to a controlled foreign corporation for Federal income tax purposes. Because the statutory tax rates in Canada are lower than those in the United States, this transaction triggered a $5.1 million reduction in the Company’s deferred tax liabilities, which is being amortized as a reduction to deferred income tax expense over the weighted average remaining useful life of the Canadian assets.

As a result of the above conversion, the Company’s Canadian assets are no longer subject to United States taxation, provided that the related unremitted earnings are permanently reinvested in Canada. Effective January 1, 2010, the Company has elected to permanently reinvest these unremitted earnings in Canada, and it intends to do so for the foreseeable future. As a result, no deferred United States Federal or state income taxes have been provided on such unremitted foreign earnings, which totaled approximately $18.7 million as of September 30, 2011.

14. Recently Issued Accounting Standards

In September 2011, the FASB issued an accounting standard update that simplifies how entities test goodwill for impairment. This update permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. Previous guidance required an entity to test goodwill for impairment, on at least an annual basis, by comparing the fair value of a reporting unit with its carrying amount. If the fair value of a reporting unit is less than its carrying amount, then the second step of the test must be performed to measure the amount of the impairment loss, if any. Under the amendments in this update, an entity is not required to calculate the fair value of a reporting unit unless the entity determines that it is more likely than not that its

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fair value is less than its carrying amount. This update is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. Early adoption is permitted if an entity’s financial statements for the most recent annual or interim period have not yet been issued.

In June 2011, the FASB issued an accounting standard update that requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In the two-statement approach, the first statement should present total net income and its components followed consecutively by a second statement that should present total other comprehensive income, the components of other comprehensive income, and the total of comprehensive income. Historically, these components of other comprehensive income and total comprehensive income have been presented in the statement of changes in stockholders’ equity by many companies, including us. This requirement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011, and will be effective for the Company in the quarter ending March 31, 2012. The adoption of this update will result in the addition of a new consolidated statement of comprehensive income to the Company’s consolidated financial statements.

In May 2011, the FASB issued an accounting standard update to improve the comparability of fair value measurements presented and disclosed in financial statements prepared in accordance with United States GAAP and International Financial Reporting Standards. The amendments in this update do not require additional fair value measurements, but provide additional guidance as to measuring fair value as well as certain additional disclosure requirements. The requirements in this update are effective during interim and annual periods beginning after December 15, 2011 and will be effective for the Company in the quarter ending March 31, 2012. The adoption of this update will not have a material impact on the Company’s disclosures included in its consolidated financial statements.

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DISCLOSURE REGARDING FORWARD LOOKING STATEMENTS

This Quarterly Report on Form 10-Q (this “Report”) and other public filings and press releases by us contain “forward-looking statements” within the meaning of the Securities Act of 1933, as amended (the “Securities Act”), and the Securities Exchange Act of 1934, as amended (the “Exchange Act”), and the Private Securities Litigation Reform Act of 1995, as amended. These “forward-looking statements” involve risk and uncertainty. These forward-looking statements include, without limitation, statements relating to: liquidity; financing of operations; continued volatility of oil and natural gas prices; source and sufficiency of funds required for building new equipment and additional acquisitions (if further opportunities arise); impact of inflation; demand for our services; and other matters. Our forward-looking statements can be identified by the fact that they do not relate strictly to historic or current facts and often use words such as “believes,” “budgeted,” “continue,” “expects,” “estimates,” “project,” “will,” “could,” “may,” “plans,” “intends,” “strategy,” or “anticipates,” or the negative thereof and other words and expressions of similar meaning. The forward-looking statements are based on certain assumptions and analyses we make in light of our experience and our perception of historical trends, current conditions, expected future developments and other factors we believe are appropriate in the circumstances. Although we believe that the expectations reflected in such forward-looking statements are reasonable, we can give no assurance that such expectations will prove to have been correct. Forward-looking statements may be made orally or in writing, including, but not limited to, Management’s Discussion and Analysis of Financial Condition and Results of Operations included in this Report and other sections of our filings with the United States Securities and Exchange Commission (the “SEC”) under the Exchange Act and the Securities Act.

Forward-looking statements are not guarantees of future performance and a variety of factors could cause actual results to differ materially from the anticipated or expected results expressed in or suggested by these forward-looking statements. Factors that might cause or contribute to such differences include, but are not limited to, deterioration of global economic conditions, declines in oil and natural gas prices that could adversely affect demand for our services and their associated effect on day rates, utilization, margins and planned capital expenditures, excess availability of land drilling rigs and pressure pumping equipment, including as a result of reactivation or construction, adverse industry conditions, adverse credit and equity market conditions, difficulty in integrating acquisitions, shortages of equipment and materials, governmental regulation and ability to retain management and field personnel. Refer to “Risk Factors” contained in Part 1 of our Annual Report on Form 10-K for the year ended December 31, 2010 for a more complete discussion of these and other factors that might affect our performance and financial results. You are cautioned not to place undue reliance on any of our forward-looking statements. These forward-looking statements are intended to relay our expectations about the future, and speak only as of the date they are made. We undertake no obligation to publicly update or revise any forward-looking statement, whether as a result of new information, changes in internal estimates or otherwise.

ITEM 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Management Overview — We are a leading provider of services to the North American oil and natural gas industry. Our services primarily involve the drilling, on a contract basis, of land-based oil and natural gas wells and pressure pumping services. In addition to the aforementioned services, we also invest, on a working interest basis, in oil and natural gas properties. Prior to the sale of substantially all of the assets of our drilling and completion fluids business in January 2010, we provided drilling fluids, completion fluids and related services to oil and natural gas operators. Due to our exit from the drilling and completion fluids business in January 2010, we have presented the results of that operating segment as discontinued operations in this Report. We acquired an electric wireline business on October 1, 2010 and sold the business on January 27, 2011. Due to our exit from the electric wireline business, we have presented the results of that business as discontinued operations in this Report. For the three and nine months ended September 30, 2011 and 2010, our operating revenues from continuing operations consisted of the following (dollars in thousands):

|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2011 |  |  | 2010 |  |  | 2011 |  |  | 2010 |
Contract drilling |  | $ | 436,827 |  |  |  | 65 | % |  | $ | 290,759 |  |  |  | 77 | % |  | $ | 1,200,664 |  |  |  | 65 | % |  | $ | 741,470 |  |  |  | 78 | %
Pressure pumping |  |  | 225,164 |  |  |  | 33 |  |  |  | 81,104 |  |  |  | 21 |  |  |  | 604,954 |  |  |  | 33 |  |  |  | 194,219 |  |  |  | 20 |
Oil and natural gas |  |  | 11,837 |  |  |  | 2 |  |  |  | 6,800 |  |  |  | 2 |  |  |  | 35,678 |  |  |  | 2 |  |  |  | 21,564 |  |  |  | 2 |
|  | $ | 673,828 |  |  |  | 100 | % |  | $ | 378,663 |  |  |  | 100 | % |  | $ | 1,841,296 |  |  |  | 100 | % |  | $ | 957,253 |  |  |  | 100 | %

Generally, the profitability of our business is impacted most by two primary factors in our contract drilling segment: our average number of rigs operating and our average revenue per operating day. During the third quarter of 2011, our average number of rigs operating was 221 compared to 178 in the third quarter of 2010. Our average revenue per operating day was $21,440 in the third quarter of 2011 compared to $17,730 in the third quarter of 2010. Additionally, our pressure pumping segment experienced an increase in large multi-stage fracturing jobs in 2011 compared to 2010. This increase includes the contribution of a pressure pumping business we acquired on October 1, 2010, which significantly expanded our pressure pumping operations into new markets. We had

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consolidated net income of $81.9 million for the third quarter of 2011 compared to consolidated net income of $29.4 million for the third quarter of 2010. The increase in consolidated net income was primarily due to our contract drilling segment experiencing an increase in the average number of rigs operating and an increase in the average revenue per operating day as well as greater activity, pricing and size of our pressure pumping business.

Our revenues, profitability and cash flows are highly dependent upon prevailing prices for oil and natural gas. During periods of improved commodity prices, the capital spending budgets of oil and natural gas operators tend to expand, which generally results in increased demand for our services. Conversely, in periods when these commodity prices deteriorate, the demand for our services generally weakens and we experience downward pressure on pricing for our services. After reaching a peak in June 2008, there was a significant extended decline in oil and natural gas prices and a substantial deterioration in the global economic environment. As part of this deterioration, there was substantial uncertainty in the capital markets and access to financing was reduced. Due to these conditions, our customers reduced or curtailed their drilling programs, which resulted in a decrease in demand for our services, as evidenced by the decline in our monthly average of rigs operating from a high of 283 in October 2008 to a low of 60 in June 2009. Our monthly average number of rigs operating has subsequently increased from the mid-year low of 60 in 2009 to 225 in September 2011 and our profitability has improved.

We are also highly impacted by competition, the availability of excess equipment, labor issues and various other factors that could materially adversely affect our business, financial condition, cash flows and results of operations. Please see “Risk Factors” included in Part I of our Annual Report on Form 10-K for the fiscal year ended December 31, 2010.

We believe that our liquidity as of September 30, 2011, which includes approximately $260 million in working capital and approximately $344 million available under our $400 million revolving credit facility, together with cash expected to be generated from operations, should provide us with sufficient ability to fund our current plans to build new equipment, make improvements to our existing equipment, service our debt and pay cash dividends. If we pursue opportunities for growth that require capital, we believe we would be able to satisfy these needs through a combination of working capital, cash flows from operating activities, borrowing capacity under our revolving credit facility or additional debt or equity financing. However, there can be no assurance that such capital will be available on reasonable terms, if at all.

Commitments and Contingencies — As of September 30, 2011, we maintained letters of credit in the aggregate amount of $40.6 million for the benefit of various insurance companies as collateral for retrospective premiums and retained losses which could become payable under the terms of the underlying insurance contracts. These letters of credit expire annually at various times during the year and are typically renewed. As of September 30, 2011, no amounts had been drawn under the letters of credit.

As of September 30, 2011, we had commitments to purchase approximately $370 million of major equipment.

Trading and Investing — We have not engaged in trading activities that include high-risk securities, such as derivatives and non-exchange traded contracts. We invest cash primarily in highly liquid, short-term investments such as overnight deposits and money market accounts.

Description of Business — We conduct our contract drilling operations primarily in Texas, New Mexico, Oklahoma, Arkansas, Louisiana, Mississippi, Colorado, Utah, Wyoming, Montana, North Dakota, Pennsylvania, West Virginia, Ohio and western Canada. As of September 30, 2011, we had approximately 350 marketable land-based drilling rigs. We provide pressure pumping services to oil and natural gas operators primarily in Texas and the Appalachian Basin. Pressure pumping services are primarily well stimulation and cementing for completion of new wells and remedial work on existing wells. We also invest, on a working interest basis, in oil and natural gas properties.

The North American land drilling industry has experienced periods of downturn in demand over the last decade. During these periods, there have been substantially more drilling rigs available than necessary to meet demand. As a result, drilling contractors have had difficulty sustaining profit margins and, at times, have sustained losses during the downturn periods.

In addition, unconventional resource plays have substantially increased recently and some drilling rigs are not capable of drilling these wells efficiently. Accordingly, the utilization of some older technology drilling rigs may be hampered by their lack of capability to successfully compete for this work. Other ongoing factors which could continue to adversely affect utilization rates and pricing, even in an environment of high oil and natural gas prices and increased drilling activity, include:

| • |  | movement of drilling rigs from region to region,

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| • |  | reactivation of land-based drilling rigs, or

| • |  | construction of new drilling rigs.

Construction of new drilling rigs increased significantly during the last ten years. The addition of new drilling rigs to the market has, at times, resulted in excess capacity. Similarly, the substantial recent increase in unconventional resource plays has led to higher demand for pressure pumping services. As a result, there has been, and we expect there will continue to be, significant construction of new pressure pumping equipment. The addition of new pressure pumping equipment, as well as any general decline in demand for pressure pumping services, could result in there being substantially more pressure pumping equipment available than necessary to meet demand. If this were to occur, providers of pressure pumping services will have difficulty sustaining profit margins and may sustain losses during downturn periods. We cannot predict either the future level of demand for our contract drilling or pressure pumping services or future conditions in the oil and natural gas contract drilling or pressure pumping businesses.

Critical Accounting Policies

In addition to established accounting policies, our consolidated financial statements are impacted by certain estimates and assumptions made by management. No changes in our critical accounting policies have occurred since the filing of our Annual Report on Form 10-K for the fiscal year ended December 31, 2010.

Liquidity and Capital Resources

As of September 30, 2011, we had working capital of $260 million, including cash and cash equivalents of $10.6 million compared to working capital of $241 million and cash and cash equivalents of $27.6 million at December 31, 2010.

During the nine months ended September 30, 2011, our sources of cash flow included:

| • |  | $656 million from operating activities,

| • |  | $25.5 million in proceeds from the disposal of our electric wireline business,

| • |  | $19.9 million from the exercise of stock options and related tax benefits associated with stock-based compensation,

| • |  | $15.8 million in borrowings under our revolving credit facility, and

| • |  | $9.1 million in proceeds from the disposal of property and equipment.

During the nine months ended September 30, 2011, we used $23.3 million to pay dividends on our common stock, $4.2 million to repurchase shares of our common stock, $3.8 million to repay long-term debt and $711 million:

| • |  | to build new drilling rigs and pressure pumping equipment,

| • |  | to make capital expenditures for the betterment and refurbishment of our drilling rigs and pressure pumping equipment,

| • |  | to acquire and procure equipment and facilities to support our drilling and pressure pumping operations, and

| • |  | to fund investments in oil and natural gas properties on a working interest basis.

We paid cash dividends during the nine months ended September 30, 2011 as follows:

|  | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 30, 2011 |  | $ | 0.05 |  |  | $ | 7,708 |
Paid on June 30, 2011 |  |  | 0.05 |  |  |  | 7,772 |
Paid on September 30, 2011 |  |  | 0.05 |  |  |  | 7,777 |
Total cash dividends |  | $ | 0.15 |  |  | $ | 23,257 |

On October 26, 2011, our Board of Directors approved a cash dividend on our common stock in the amount of $0.05 per share to be paid on December 30, 2011 to holders of record as of December 15, 2011. The amount and timing of all future dividend payments, if any, is subject to the discretion of the Board of Directors and will depend upon business conditions, results of operations, financial condition, terms of our credit facilities and other factors.

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On August 1, 2007, our Board of Directors approved a stock buyback program, authorizing purchases of up to $250 million of our common stock in open market or privately negotiated transactions. During the nine months ended September 30, 2011, we purchased 8,025 shares of our common stock under this program at a cost of approximately $242,000. As of September 30, 2011, we are authorized to purchase approximately $113 million of our outstanding common stock under this program.

On August 19, 2010, we entered into the 2010 Credit Agreement. The 2010 Credit Agreement is a committed senior unsecured credit facility that includes a revolving credit facility and a term loan facility.

The revolving credit facility permits aggregate borrowings of up to $400 million and contains a letter of credit facility that is limited to $150 million and a swing line facility that is limited to $40 million. Subject to customary conditions, we may request that the lenders’ aggregate commitments with respect to the revolving credit facility be increased by up to $100 million, not to exceed total commitments of $500 million. The maturity date for the revolving facility is August 19, 2013.

The term loan facility provided for a loan of $100 million which was funded on August 19, 2010. The term loan facility is payable in quarterly principal installments commencing November 19, 2010. The installment amounts vary from 1.25% of the original principal amount for each of the first four quarterly installments, 2.50% of the original principal amount for each of the subsequent eight quarterly installments, 5.00% of the original principal amount for the next subsequent three quarterly installments, with the remainder becoming due at maturity. The maturity date for the term loan facility is August 19, 2014.

Loans under the 2010 Credit Agreement bear interest by reference, at our election, to the LIBOR rate or base rate. The applicable margin on LIBOR rate loans varies from 2.75% to 3.75% and the applicable margin on base rate loans varies from 1.75% to 2.75%, in each case determined based upon our debt to capitalization ratio. As of September 30, 2011, the applicable margin on LIBOR rate loans was 2.75% and the applicable margin on base rate loans was 1.75%. A letter of credit fee is payable by us equal to the applicable margin for LIBOR rate loans times the daily amount available to be drawn under outstanding letters of credit. The commitment fee payable to the lenders for the unused portion of the revolving credit facility varies from 0.50% to 0.75% based upon our debt to capitalization ratio and was 0.50% as of September 30, 2011.

The 2010 Credit Agreement contains customary representations, warranties, indemnities and affirmative and negative covenants. The 2010 Credit Agreement also requires compliance with two financial covenants. We must not permit our debt to capitalization ratio to exceed 45% at any time. The 2010 Credit Agreement generally defines the debt to capitalization ratio as the ratio of (a) total borrowed money indebtedness to (b) the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. We also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 3.00 to 1.00. The 2010 Credit Agreement generally defines the interest coverage ratio as the ratio of EBITDA of the four prior fiscal quarters to interest charges for the same period. We were in compliance with these financial covenants as of September 30, 2011. We do not expect that the restrictions and covenants will impair our ability to operate or react to opportunities that might arise.

As of September 30, 2011, we had $95.0 million outstanding under the term loan facility at an interest rate of 3.125% and approximately $15.8 million principal amount outstanding under the revolving credit facility at an interest rate of 5.00%. We had $40.6 million in letters of credit outstanding at September 30, 2011 and, as a result, we had available borrowing capacity under the revolving credit facility of approximately $344 million at that date.

On October 5, 2010, we completed the issuance and sale of $300 million in aggregate principal amount of our 4.97% Series A Senior Notes due October 5, 2020 (the “Notes”) in a private placement.

The Notes bear interest at a rate of 4.97% per annum. We pay interest on the Notes on April 5 and October 5 of each year. The Notes will mature on October 5, 2020. The Notes are prepayable at the our option, in whole or in part, provided that in the case of a partial prepayment, prepayment must be in an amount not less than 5% of the aggregate principal amount of the Notes then outstanding, at any time and from time to time at 100% of the principal amount prepaid, plus accrued and unpaid interest to the prepayment date, plus a “make-whole” premium as specified in the note purchase agreement. We must offer to prepay the Notes upon the occurrence of any change of control. In addition, we must offer to prepay the Notes upon the occurrence of certain asset dispositions if the proceeds therefrom are not timely reinvested in productive assets. If any offer to prepay is accepted, the purchase price of each prepaid Note is 100% of the principal amount thereof, plus accrued and unpaid interest thereon to the prepayment date.

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The note purchase agreement requires compliance with two financial covenants. We must not permit our debt to capitalization ratio to exceed 50% at any time. The note purchase agreement generally defines the debt to capitalization ratio as the ratio of (a) total borrowed money indebtedness to (b) the sum of such indebtedness plus consolidated net worth, with consolidated net worth determined as of the last day of the most recently ended fiscal quarter. We also must not permit the interest coverage ratio as of the last day of a fiscal quarter to be less than 2.50 to 1.00. The note purchase agreement generally defines the interest coverage ratio as the ratio for the four prior quarters of EBITDA to interest charges for the same period.

Events of default under the note purchase agreement include failure to pay principal or interest when due, failure to comply with the financial and operational covenants, a cross default event, a judgment in excess of a threshold event, the guaranty agreement ceasing to be enforceable, the occurrence of certain ERISA events, a change of control event and bankruptcy and other insolvency events. If an event of default occurs and is continuing, then holders of a majority in principal amount of the Notes have the right to declare all the Notes then outstanding to be immediately due and payable. In addition, if we default in payments on any Note, then until such defaults are cured, the holder thereof may declare all the Notes held by it to be immediately due and payable. We do not expect that the restrictions and covenants will impair our ability to operate or react to opportunities that might arise.

We believe that the current level of cash, short-term investments and borrowing capacity available under our revolving credit facility, together with cash expected to be generated from operating activities, should be sufficient to fund our current plans to build new equipment, make improvements to our existing equipment, service our debt and pay cash dividends.

From time to time, opportunities to expand our business, including acquisitions and the building of new equipment, are evaluated. The timing, size or success of any acquisition and the associated capital commitments are unpredictable. If we pursue opportunities for growth that require capital, we believe we would be able to satisfy these needs through a combination of working capital, cash generated from operations, borrowing capacity under our revolving credit facility or additional debt or equity financing. However, there can be no assurance that such capital will be available on reasonable terms, if at all.

Results of Operations

The following tables summarize operations by business segment for the three months ended September 30, 2011 and 2010:

Contract Drilling |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Revenues |  | $ | 436,827 |  |  | $ | 290,759 |  |  |  | 50.2 | %
Direct operating costs |  | $ | 264,418 |  |  | $ | 174,999 |  |  |  | 51.1 | %
Selling, general and administrative |  | $ | 2,240 |  |  | $ | 1,664 |  |  |  | 34.6 | %
Depreciation and impairment |  | $ | 84,461 |  |  | $ | 72,617 |  |  |  | 16.3 | %
Operating income |  | $ | 85,708 |  |  | $ | 41,479 |  |  |  | 106.6 | %
Operating days |  |  | 20,370 |  |  |  | 16,400 |  |  |  | 24.2 | %
Average revenue per operating day |  | $ | 21.44 |  |  | $ | 17.73 |  |  |  | 20.9 | %
Average direct operating costs per operating day |  | $ | 12.98 |  |  | $ | 10.67 |  |  |  | 21.6 | %
Average rigs operating |  |  | 221 |  |  |  | 178 |  |  |  | 24.2 | %
Capital expenditures |  | $ | 224,288 |  |  | $ | 192,233 |  |  |  | 16.7 | %

Revenues and direct operating costs increased in 2011 compared to 2010 as a result of an increase in the number of operating days and increases in average revenue and direct operating costs per operating day. Average revenue per operating day increased in 2011 primarily due to increases in contractual dayrates. Average direct operating costs per operating day increased in 2011 due primarily to higher repairs, maintenance and labor costs. These costs increased primarily as a result of cost inflation in our industry and, in connection with operating our conventional rig fleet, high levels of repairs and maintenance. The increase in operating days was largely due to increased demand resulting from higher oil prices. Capital expenditures were incurred in 2011 and 2010 to build new drilling rigs, to modify and upgrade our drilling rigs and to acquire additional related equipment such as top drives, drill pipe, drill collars, engines, fluid circulating systems, rig hoisting systems and safety enhancement equipment. Depreciation expense increased as a result of capital expenditures. Depreciation and impairment expense included approximately $4.3 million in 2011 and approximately $705,000 in 2010 of impairment charges related to drilling equipment on drilling rigs that were removed from our marketable fleet. We removed 22 rigs from our marketable fleet in 2011 and removed two rigs from our marketable fleet in 2010.

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Pressure Pumping |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Revenues |  | $ | 225,164 |  |  | $ | 81,104 |  |  |  | 177.6 | %
Direct operating costs |  | $ | 149,577 |  |  | $ | 51,305 |  |  |  | 191.5 | %
Selling, general and administrative |  | $ | 4,455 |  |  | $ | 2,668 |  |  |  | 67.0 | %
Depreciation and amortization |  | $ | 20,706 |  |  | $ | 9,545 |  |  |  | 116.9 | %
Operating income |  | $ | 50,426 |  |  | $ | 17,586 |  |  |  | 186.7 | %
Fracturing jobs |  |  | 416 |  |  |  | 420 |  |  |  | (1.0 | )%
Other jobs |  |  | 1,990 |  |  |  | 1,600 |  |  |  | 24.4 | %
Total jobs |  |  | 2,406 |  |  |  | 2,020 |  |  |  | 19.1 | %
Average revenue per fracturing job |  | $ | 453.78 |  |  | $ | 147.20 |  |  |  | 208.3 | %
Average revenue per other job |  | $ | 18.29 |  |  | $ | 12.05 |  |  |  | 51.8 | %
Average revenue per total job |  | $ | 93.58 |  |  | $ | 40.15 |  |  |  | 133.1 | %
Average direct operating costs per total job |  | $ | 62.17 |  |  | $ | 25.40 |  |  |  | 144.8 | %
Capital expenditures |  | $ | 52,826 |  |  | $ | 15,531 |  |  |  | 240.1 | %

Contributing to the increases in revenues, direct operating costs, selling, general and administrative expenses and depreciation and amortization was our acquisition of a pressure pumping business on October 1, 2010, which significantly expanded the size of our fleet of pressure pumping equipment and the markets in which we provide pressure pumping services. This acquisition was accounted for as a business combination and the results of operations of the acquired business are included in our pressure pumping segment results from the date of acquisition. The acquired business contributed revenue of $127 million and operating income of $28.0 million to our operating results during the three months ended September 30, 2011.

Our customers have increased their activities in the development of unconventional reservoirs resulting in an increase in larger multi-stage fracturing jobs associated therewith. We have added additional equipment through construction and acquisition to meet this demand and expand our area of operations. As a result, we have experienced a significant increase in the number of these larger multi-stage fracturing jobs as a proportion of the total fracturing jobs we performed. Average revenue per fracturing job increased as a result of this increase in the number of larger multi-stage fracturing jobs in 2011 as compared to 2010, as well as increased pricing. Average revenue per other job increased as a result of increased pricing for the services provided and a change in job mix. Average direct operating costs per total job increased primarily as a result of the increase in the number of larger multi-stage fracturing jobs. Selling, general and administrative expenses increased in 2011 due to $1.7 million in expenses associated with the acquired business. Significant capital expenditures have been incurred in recent years to add capacity in our pressure pumping segment. Depreciation and amortization expense in 2011 includes $1.0 million in amortization of intangible assets. The remaining increase in depreciation in 2011 compared to 2010 was a result of our recent capital expenditures and our October 1, 2010 acquisition.

Oil and Natural Gas Production and Exploration |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Revenues — Oil |  | $ | 10,081 |  |  | $ | 5,580 |  |  |  | 80.7 | %
Revenues — Natural gas and liquids |  | $ | 1,756 |  |  | $ | 1,220 |  |  |  | 43.9 | %
Revenues — Total |  | $ | 11,837 |  |  | $ | 6,800 |  |  |  | 74.1 | %
Direct operating costs |  | $ | 2,306 |  |  | $ | 1,484 |  |  |  | 55.4 | %
Depletion and impairment |  | $ | 4,777 |  |  | $ | 2,851 |  |  |  | 67.6 | %
Operating income |  | $ | 4,754 |  |  | $ | 2,465 |  |  |  | 92.9 | %
Capital expenditures |  | $ | 5,467 |  |  | $ | 4,782 |  |  |  | 14.3 | %

Total revenues increased as a result of increased production and higher prices for oil and liquids. Average daily production increased primarily due to the addition of new wells. Depletion and impairment expense in 2011 includes approximately $1.4 million of oil and natural gas property impairments compared to approximately $119,000 of oil and natural gas property impairments in 2010. Depletion expense increased approximately $627,000 in 2011 compared to 2010 primarily due to increased oil production.

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Corporate and Other |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Selling, general and administrative |  | $ | 9,262 |  |  | $ | 9,353 |  |  |  | (1.0 | )%
Depreciation |  | $ | 769 |  |  | $ | 418 |  |  |  | 84.0 | %
Net gain on asset disposals |  | $ | 1,437 |  |  | $ | 250 |  |  |  | 474.8 | %
Provision for bad debts |  | $ | — |  |  | $ | (500 | ) |  |  | (100.0 | )%
Interest income |  | $ | 47 |  |  | $ | 64 |  |  |  | (26.6 | )%
Interest expense |  | $ | 3,835 |  |  | $ | 6,227 |  |  |  | (38.4 | )%
Other income |  | $ | 375 |  |  | $ | 260 |  |  |  | 44.2 | %
Capital expenditures |  | $ | 1,237 |  |  | $ | 2,288 |  |  |  | (45.9 | )%

Gains on the disposal of assets are treated as part of our corporate activities because such transactions relate to corporate strategy decisions of our executive management group. The gain on disposal of assets in 2011 is primarily related to the sale of scrap metal. The negative provision for bad debts in 2010 is the result of collections of certain accounts that had previously been reserved, as well as reductions in our reserve for specific accounts due to improved industry conditions. Interest expense in 2010 includes $3.3 million due to the recognition of remaining deferred financing costs associated with a revolving credit facility that was replaced in August 2010 and includes $1.3 million due to the recognition of deferred financing costs associated with a bridge credit facility that expired on September 30, 2010. Excluding these interest items in 2010, interest expense increased due to interest associated with the 4.97% Senior Notes and interest on borrowings under our revolving credit facility in 2011.

The following tables summarize operations by business segment for the nine months ended September 30, 2011 and 2010:

Contract Drilling |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Revenues |  | $ | 1,200,664 |  |  | $ | 741,470 |  |  |  | 61.9 | %
Direct operating costs |  | $ | 701,871 |  |  | $ | 459,448 |  |  |  | 52.8 | %
Selling, general and administrative |  | $ | 4,833 |  |  | $ | 3,816 |  |  |  | 26.7 | %
Depreciation and impairment |  | $ | 242,598 |  |  | $ | 205,927 |  |  |  | 17.8 | %
Operating income |  | $ | 251,362 |  |  | $ | 72,279 |  |  |  | 247.8 | %
Operating days |  |  | 57,422 |  |  |  | 43,407 |  |  |  | 32.3 | %
Average revenue per operating day |  | $ | 20.91 |  |  | $ | 17.08 |  |  |  | 22.4 | %
Average direct operating costs per operating day |  | $ | 12.22 |  |  | $ | 10.58 |  |  |  | 15.5 | %
Average rigs operating |  |  | 210 |  |  |  | 159 |  |  |  | 32.1 | %
Capital expenditures |  | $ | 556,263 |  |  | $ | 455,708 |  |  |  | 22.1 | %

Revenues and direct operating costs increased in 2011 compared to 2010 as a result of an increase in the number of operating days and increases in average revenue and direct operating costs per operating day. Average revenue per operating day increased in 2011 primarily due to increases in contractual dayrates. Average direct operating costs per operating day increased in 2011 due primarily to higher repairs, maintenance and labor costs. These costs increased primarily as a result of cost inflation in our industry and, in connection with operating our conventional rig fleet, high levels of repairs and maintenance. The increase in operating days was largely due to increased demand resulting from higher oil prices. Capital expenditures were incurred in 2011 and 2010 to build new drilling rigs, to modify and upgrade our drilling rigs and to acquire additional related equipment such as top drives, drill pipe, drill collars, engines, fluid circulating systems, rig hoisting systems and safety enhancement equipment. Depreciation expense increased as a result of capital expenditures. Depreciation and impairment expense included approximately $4.3 million in 2011 and approximately $4.2 million in 2010 of impairment charges related to drilling equipment on drilling rigs that were removed from our marketable fleet. We removed 22 rigs from our marketable fleet in 2011 and removed four rigs from our marketable fleet in 2010.

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Pressure Pumping |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Revenues |  | $ | 604,954 |  |  | $ | 194,219 |  |  |  | 211.5 | %
Direct operating costs |  | $ | 397,018 |  |  | $ | 132,401 |  |  |  | 199.9 | %
Selling, general and administrative |  | $ | 13,250 |  |  | $ | 8,014 |  |  |  | 65.3 | %
Depreciation and amortization |  | $ | 52,542 |  |  | $ | 25,035 |  |  |  | 109.9 | %
Operating income |  | $ | 142,144 |  |  | $ | 28,769 |  |  |  | 394.1 | %
Fracturing jobs |  |  | 1,150 |  |  |  | 1,078 |  |  |  | 6.7 | %
Other jobs |  |  | 5,071 |  |  |  | 4,350 |  |  |  | 16.6 | %
Total jobs |  |  | 6,221 |  |  |  | 5,428 |  |  |  | 14.6 | %
Average revenue per fracturing job |  | $ | 445.29 |  |  | $ | 134.31 |  |  |  | 231.5 | %
Average revenue per other job |  | $ | 18.31 |  |  | $ | 11.36 |  |  |  | 61.2 | %
Average revenue per total job |  | $ | 97.24 |  |  | $ | 35.78 |  |  |  | 171.8 | %
Average direct operating costs per total job |  | $ | 63.82 |  |  | $ | 24.39 |  |  |  | 161.7 | %
Capital expenditures |  | $ | 135,442 |  |  | $ | 36,342 |  |  |  | 272.7 | %

Contributing to the increases in revenues, direct operating costs, selling, general and administrative expenses and depreciation and amortization was our acquisition of a pressure pumping business on October 1, 2010, which significantly expanded the size of our fleet of pressure pumping equipment and the markets in which we provide pressure pumping services. This acquisition was accounted for as a business combination and the results of operations of the acquired business are included in our pressure pumping segment results from the date of acquisition. The acquired business contributed revenue of $324 million and operating income of $77.9 million to our operating results during the nine months ended September 30, 2011.

Our customers have increased their activities in the development of unconventional reservoirs resulting in an increase in larger multi-stage fracturing jobs associated therewith. We have added additional equipment through construction and acquisition to meet this demand and expand our area of operations. As a result, we have experienced an increase in the number of these larger multi-stage fracturing jobs as a proportion of the total fracturing jobs we performed. Average revenue per fracturing job increased as a result of this increase in the number of larger multi-stage fracturing jobs in 2011 as compared to 2010, as well as increased pricing. Average revenue per other job increased as a result of increased pricing for the services provided and a change in job mix. Average direct operating costs per total job increased primarily as a result of the increase in the number of larger multi-stage fracturing jobs. Selling, general and administrative expenses increased in 2011 due to $4.7 million in expenses associated with the acquired business. Significant capital expenditures have been incurred in recent years to add capacity in our pressure pumping segment. Depreciation and amortization expense in 2011 includes $3.1 million in amortization of intangible assets. The remaining increase in depreciation in 2011 compared to 2010 was a result of our recent capital expenditures and our October 1, 2010 acquisition.

Oil and Natural Gas Production and Exploration |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Revenues — Oil |  | $ | 31,168 |  |  | $ | 16,987 |  |  |  | 83.5 | %
Revenues — Natural gas and liquids |  | $ | 4,510 |  |  | $ | 4,577 |  |  |  | (1.5 | )%
Revenues — Total |  | $ | 35,678 |  |  | $ | 21,564 |  |  |  | 65.5 | %
Direct operating costs |  | $ | 6,406 |  |  | $ | 5,326 |  |  |  | 20.3 | %
Depletion and impairment |  | $ | 12,571 |  |  | $ | 8,029 |  |  |  | 56.6 | %
Operating income |  | $ | 16,701 |  |  | $ | 8,209 |  |  |  | 103.4 | %
Capital expenditures |  | $ | 15,213 |  |  | $ | 15,902 |  |  |  | (4.3 | )%

Total revenues increased as a result of increased production and higher prices for oil and liquids. Oil production increased primarily due to the addition of new wells. Depletion and impairment expense in 2011 includes approximately $2.8 million of oil and natural gas property impairments compared to approximately $789,000 of oil and natural gas property impairments in 2010. Depletion expense increased approximately $2.5 million in 2011 compared to 2010 primarily due to increased oil production.

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Corporate and Other |  | 2011 |  |  | 2010 |  |  | % Change |
|  | (Dollars in thousands) |  |  |  |
Selling, general and administrative |  | $ | 30,598 |  |  | $ | 25,661 |  |  |  | 19.2 | %
Depreciation |  | $ | 1,966 |  |  | $ | 939 |  |  |  | 109.4 | %
Net gain on asset disposals |  | $ | 4,058 |  |  | $ | 21,940 |  |  |  | (81.5 | )%
Provision for bad debts |  | $ | — |  |  | $ | (1,500 | ) |  |  | (100.0 | )%
Interest income |  | $ | 135 |  |  | $ | 1,631 |  |  |  | (91.7 | )%
Interest expense |  | $ | 11,238 |  |  | $ | 9,011 |  |  |  | 24.7 | %
Other income |  | $ | 572 |  |  | $ | 509 |  |  |  | 12.4 | %
Capital expenditures |  | $ | 4,518 |  |  | $ | 5,727 |  |  |  | (21.1 | )%

Selling, general and administrative expense increased in 2011 primarily as a result of increased personnel costs. Gains on the disposal of assets are treated as part of our corporate activities because such transactions relate to corporate strategy decisions of our executive management group. The gain on disposal of assets in 2011 is primarily related to the sale of scrap metal. The gain on asset disposals in 2010 includes a gain of $20.1 million related to the sale of certain rights to explore and develop zones deeper than the depths that we generally target for certain of the oil and natural gas properties in which we have working interests. The negative provision for bad debts in 2010 is the result of collections of certain accounts that had previously been reserved, as well as reductions in our reserve for specific accounts due to improved industry conditions. Interest income in 2010 includes the collection of interest on a customer account as well as interest received on prior overpayments of sales taxes in certain jurisdictions. Interest expense increased in 2011 primarily due to interest charges on the 4.97% Senior Notes that were issued in October 2010, the term loan that was entered into in August 2010 and interest on borrowings under our revolving credit facility.

Income Taxes

The asset and liability method is used in accounting for income taxes. Under this method, deferred tax assets and liabilities are recognized for operating loss and tax credit carryforwards and for the future tax consequences attributable to differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax bases. Our net current deferred tax asset is comprised primarily of net operating loss carryforwards, and the net deferred tax liability is comprised primarily of the difference between the financial statement carrying amount and the tax basis of property and equipment. The increase in the net deferred tax asset during the nine months ended September 30, 2011 is due to net operating losses for tax purposes that are the result of accelerated depreciation on 2011 capital expenditures. The increase in the net deferred tax liability during the nine months ended September 30, 2011 includes the impact of the difference between the financial statement carrying amount and tax basis of property and equipment resulting from the acceleration of depreciation on 2011 capital expenditures. The accelerated tax depreciation includes the temporary 100% expensing of qualified property placed in service in 2011 provided for by the Tax Relief, Unemployment Insurance Reauthorization, and Job Creation Act of 2010.

On January 1, 2010, we converted our Canadian operations from a Canadian branch to a controlled foreign corporation for Federal income tax purposes. Because the statutory tax rates in Canada are lower than those in the United States, this transaction triggered a $5.1 million reduction in our deferred tax liabilities, which is being amortized as a reduction to deferred income tax expense over the weighted average remaining useful life of the Canadian assets.

As a result of the above conversion, our Canadian assets are no longer subject to United States taxation, provided that the related unremitted earnings are permanently reinvested in Canada. Effective January 1, 2010, we have elected to permanently reinvest these unremitted earnings in Canada, and we intend to do so for the foreseeable future. As a result, no deferred United States Federal or state income taxes have been provided on such unremitted foreign earnings, which totaled approximately $18.7 million as of September 30, 2011.

Recently Issued Accounting Standards

In September 2011, the FASB issued an accounting standard update that simplifies how entities test goodwill for impairment. This update permits an entity to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying amount as a basis for determining whether it is necessary to perform the two-step goodwill impairment test. Previous guidance required an entity to test goodwill for impairment, on at least an annual basis, by comparing the fair value of a reporting unit with its carrying amount. If the fair value of a reporting unit is less than its carrying amount, then the second step of the test must be performed to measure the amount of the impairment loss, if any. Under the amendments in this update, an entity is not required to calculate the fair value of a reporting unit unless the entity determines that it is more likely than not that its fair value is less than its carrying amount. This update is effective for annual and interim goodwill impairment tests performed for fiscal years beginning after December 15, 2011. Early adoption is permitted if an entity’s financial statements for the most recent annual or interim period have not yet been issued.

In June 2011, the FASB issued an accounting standard update that requires that all non-owner changes in stockholders’ equity be presented either in a single continuous statement of comprehensive income or in two separate but consecutive statements. In the two-statement approach, the first statement should present total net income and its components followed consecutively by a second statement that should present total other comprehensive income, the components of other comprehensive income, and the total of

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comprehensive income. Historically, these components of other comprehensive income and total comprehensive income have been presented in the statement of changes in stockholders’ equity by many companies, including us. This requirement is effective for fiscal years, and interim periods within those years, beginning after December 15, 2011, and will be effective for us in the quarter ending March 31, 2012. The adoption of this update will result in the addition of a new consolidated statement of comprehensive income to our consolidated financial statements.

In May 2011, the FASB issued an accounting standard update to improve the comparability of fair value measurements presented and disclosed in financial statements prepared in accordance with United States GAAP and International Financial Reporting Standards. The amendments in this update do not require additional fair value measurements, but provide additional guidance as to measuring fair value as well as certain additional disclosure requirements. The requirements in this update are effective during interim and annual periods beginning after December 15, 2011 and will be effective for us in the quarter ending March 31, 2012. The adoption of this update will not have a material impact on our disclosures included in our consolidated financial statements.

Volatility of Oil and Natural Gas Prices and its Impact on Operations and Financial Condition

Our revenue, profitability, financial condition and rate of growth are substantially dependent upon prevailing prices for oil and natural gas and expectations about future pricing. For many years, oil and natural gas prices and markets have been extremely volatile. Prices are affected by market supply and demand factors as well as international military, political and economic conditions, and the ability of OPEC to set and maintain production and price targets. All of these factors are beyond our control. Historically, market prices for natural gas have had the greatest impact on demand for our contract services. During 2008, the monthly average market price of natural gas (monthly average Henry Hub price as reported by the United States Energy Information Administration) peaked in June at $13.06 per Mcf before rapidly declining to an average of $5.99 per Mcf in December. In 2009, the monthly average market price of natural gas declined further to a low of $3.06 per Mcf in September. This decline in the market price of natural gas resulted in our customers significantly reducing their drilling activities beginning in the fourth quarter of 2008, and drilling activities remained low throughout 2009 before beginning to recover in 2010. Since then, oil prices have risen significantly and activity levels have increased substantially in shale and other plays directed at oil and liquids. Construction of new land drilling rigs in the United States during the last ten years has significantly contributed to excess capacity. As a result of these factors, our average number of rigs operating has declined from historic highs. We expect oil and natural gas prices to continue to be volatile and to affect our financial condition, operations and ability to access sources of capital. Low market prices for oil and natural gas would likely result in lower demand for our drilling rigs and pressure pumping services and adversely affect our operating results, financial condition and cash flows.

The North American oil and natural gas services industry has experienced downturns in demand during the last decade. During these periods, there have been substantially more drilling rigs and pressure pumping equipment available than necessary to meet demand. As a result, drilling and pressure pumping contractors have had difficulty sustaining profit margins and, at times, have incurred losses during the downturn periods.

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ITEM 3. Quantitative and Qualitative Disclosures About Market Risk

We currently have exposure to interest rate market risk associated with any borrowings that we have under our term credit facility or our revolving credit facility. Interest is paid on the outstanding principal amount of borrowings at a floating rate based on, at our election, LIBOR or a base rate. The margin on LIBOR loans ranges from 2.75% to 3.75% and the margin on base rate loans ranges from 1.75% to 2.75%, based on our debt to capitalization ratio. At September 30, 2011, the margin on LIBOR loans was 2.75% and the margin on base rate loans was 1.75%. As of September 30, 2011, we had $15.8 million outstanding under our revolving credit facility at a rate of 5.00% and $95.0 million outstanding under our term credit facility at an interest rate of 3.125%. The interest rate on the borrowings outstanding is variable and adjusts at each interest payment date based on our election of LIBOR or the base rate. A one percent increase in the interest rate on the borrowings outstanding under our revolving credit facility and term credit facility as of September 30, 2011 would increase our annual cash interest expense by approximately $1.1 million.

We conduct a portion of our business in Canadian dollars through our Canadian land-based drilling operations. The exchange rate between Canadian dollars and U.S. dollars has fluctuated during the last several years. If the value of the Canadian dollar against the U.S. dollar weakens, revenues and earnings of our Canadian operations will be reduced and the value of our Canadian net assets will decline when they are translated to U.S. dollars. This currency risk is not material to our results of operations or financial condition.

The carrying values of cash and cash equivalents, trade receivables and accounts payable approximate fair value due to the short-term maturity of these items.

ITEM 4. Controls and Procedures

Disclosure Controls and Procedures — We maintain disclosure controls and procedures (as such terms are defined in Rules 13a-15(e) and 15d-15(e) promulgated under the Exchange Act), designed to ensure that the information required to be disclosed in the reports that we file with the SEC under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to our management, including our Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), as appropriate, to allow timely decisions regarding required disclosure.

Under the supervision and with the participation of our management, including our CEO and CFO, we conducted an evaluation of the effectiveness of our disclosure controls and procedures as of the end of the period covered by this Quarterly Report on Form 10-Q. Based on that evaluation, our CEO and CFO concluded that our disclosure controls and procedures were effective as of September 30, 2011.

Changes in Internal Control Over Financial Reporting — There were no changes in our internal control over financial reporting during our most recently completed fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting, as defined in Rule 13a-15(f) under the Exchange Act.

PART II — OTHER INFORMATION

ITEM 2. Unregistered Sales of Equity Securities and Use of Proceeds

The table below sets forth the information with respect to purchases of our common stock made by us during the quarter ended September 30, 2011.

Period Covered |  | Total Number of Shares Purchased |  |  | Average Price Paid per Share |  |  | Total Number of Shares (or Units) Purchased as Part of Publicly Announced Plans or Programs |  |  | Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs (in thousands)(1) |
July 1-31, 2011 (2) |  |  | 51 |  |  | $ | 32.38 |  |  |  | — |  |  | $ | 112,882 |
August 1-31, 2011 (2) |  |  | 51 |  |  | $ | 23.63 |  |  |  | — |  |  | $ | 112,882 |
September 1-30, 2011 (2) |  |  | 51 |  |  | $ | 18.69 |  |  |  | — |  |  | $ | 112,882 |
Total |  |  | 153 |  |  | $ | 24.90 |  |  |  | — |  |  | $ | 112,882 |

(1) | On August 2, 2007, we announced that our Board of Directors approved a stock buyback program authorizing purchases of up to $250 million of our common stock in open market or privately negotiated transactions.

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(2) | We purchased 51 shares in July, 51 shares in August and 51 shares in September from an employee to provide the employee with the funds necessary to satisfy tax withholding obligations with respect to the vesting of restricted shares. The price paid was the closing price of our common stock on the last business day prior to the date the shares vested. These purchases were made pursuant to the terms of the Patterson-UTI Energy, Inc. 2005 Long-Term Incentive Plan and not pursuant to the stock buyback program.

ITEM 6. Exhibits

The following exhibits are filed herewith or incorporated by reference, as indicated:

3.1 |  | Restated Certificate of Incorporation, as amended (filed August 9, 2004 as Exhibit 3.1 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2004 and incorporated herein by reference).
3.2 |  | Amendment to Restated Certificate of Incorporation, as amended (filed August 9, 2004 as Exhibit 3.2 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2004 and incorporated herein by reference).
3.3 |  | Second Amended and Restated Bylaws (filed August 6, 2007 as Exhibit 3.3 to the Company’s Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2007 and incorporated herein by reference).
31.1* |  | Certification of Chief Executive Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended.
31.2* |  | Certification of Chief Financial Officer pursuant to Rule 13a-14(a)/15d-14(a) of the Securities Exchange Act of 1934, as amended.
32.1* |  | Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 USC Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101* |  | The following materials from Patterson-UTI Energy, Inc.’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2011, formatted in XBRL (Extensible Business Reporting Language): (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations, (iii) the Consolidated Statements of Changes in Stockholders’ Equity, (iv) the Consolidated Statements of Cash Flows, and (v) Notes to Consolidated Financial Statements.

* | filed herewith

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SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

PATTERSON-UTI ENERGY, INC.
By: |  | /s/ Gregory W. Pipkin
|  | Gregory W. Pipkin
|  | Chief Accounting Officer and Assistant Secretary
|  | (Principal Accounting Officer and Duly Authorized Officer)

DATE: October 31, 2011

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