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Business Segments | 6 Months Ended
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Jun. 30, 2012
Business Segments | 5. 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, included in discontinued operations for the six months ended June 30, 2011 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 June 30, |  |  | Six Months Ended June 30, |
|  | 2012 |  |  | 2011 |  |  | 2012 |  |  | 2011 |
Revenues: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 461,798 |  |  | $ | 387,622 |  |  | $ | 952,501 |  |  | $ | 765,647 |
Pressure pumping |  |  | 206,173 |  |  |  | 200,131 |  |  |  | 447,895 |  |  |  | 379,790 |
Oil and natural gas |  |  | 14,690 |  |  |  | 13,454 |  |  |  | 29,407 |  |  |  | 23,841 |
Total segment revenues |  |  | 682,661 |  |  |  | 601,207 |  |  |  | 1,429,803 |  |  |  | 1,169,278 |
Elimination of intercompany revenues (a) |  |  | (1,549 | ) |  |  | (1,143 | ) |  |  | (2,770 | ) |  |  | (1,810 | )
Total revenues |  | $ | 681,112 |  |  | $ | 600,064 |  |  | $ | 1,427,033 |  |  | $ | 1,167,468 |
Income before income taxes: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Contract drilling |  | $ | 90,536 |  |  | $ | 85,135 |  |  | $ | 202,307 |  |  | $ | 165,654 |
Pressure pumping |  |  | 36,846 |  |  |  | 50,340 |  |  |  | 83,633 |  |  |  | 91,718 |
Oil and natural gas |  |  | 7,224 |  |  |  | 7,129 |  |  |  | 14,742 |  |  |  | 11,947 |
|  |  | 134,606 |  |  |  | 142,604 |  |  |  | 300,682 |  |  |  | 269,319 |
Corporate and other |  |  | (12,044 | ) |  |  | (11,761 | ) |  |  | (22,856 | ) |  |  | (22,533 | )
Net gain on asset disposals (b) |  |  | 28,332 |  |  |  | 1,017 |  |  |  | 30,732 |  |  |  | 2,621 |
Interest income |  |  | 179 |  |  |  | 45 |  |  |  | 233 |  |  |  | 88 |
Interest expense |  |  | (5,051 | ) |  |  | (3,514 | ) |  |  | (9,633 | ) |  |  | (7,403 | )
Other income (expense) |  |  | (144 | ) |  |  | 78 |  |  |  | (89 | ) |  |  | 197 |
Income from continuing operations before income taxes |  | $ | 145,878 |  |  | $ | 128,469 |  |  | $ | 299,069 |  |  | $ | 242,289 |
|  | June 30, 2012 |  |  | December 31, 2011 |
Identifiable assets: |  |  |  |  |  |  |  |
Contract drilling |  | $ | 3,466,902 |  |  | $ | 3,252,116 |
Pressure pumping |  |  | 774,924 |  |  |  | 748,643 |
Oil and natural gas |  |  | 50,860 |  |  |  | 44,990 |
Corporate and other (c) |  |  | 149,929 |  |  |  | 176,152 |
Total assets |  | $ | 4,442,615 |  |  | $ | 4,221,901 |
(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 primarily include cash on hand, income taxes receivable and certain deferred tax assets.

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- Definition The entire disclosure for reporting segments including data and tables. Reportable segments include those that meet any of the following quantitative thresholds a) it's reported revenue, including sales to external customers and intersegment sales or transfers is 10 percent or more of the combined revenue, internal and external, of all operating segments b) the absolute amount of its reported profit or loss is 10 percent or more of the greater, in absolute amount of 1) the combined reported profit of all operating segments that did not report a loss or 2) the combined reported loss of all operating segments that did report a loss c) its assets are 10 percent or more of the combined assets of all operating segments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 29 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8864-108599 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8906-108599 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 32 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8933-108599 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8984-108599 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8380-108599 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8538-108599 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 42 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9054-108599 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8595-108599 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 131 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8981-108599 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8971-108599 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8844-108599 Reference 13: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 31 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e8924-108599 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9031-108599 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=6534315&loc=d3e9038-108599 + Details
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