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v2.4.1.9

Supplemental Information on Oil and Natural Gas Producing Activities (Tables) | 12 Months Ended
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Dec. 31, 2013
Reserve Quantities [Line Items] |
Capitalized Costs Relating to Oil, Natural Gas and NGL Producing Activities | Capitalized Costs Related to Oil and Natural Gas Producing Activities The Company’s capitalized costs for oil and natural gas activities consisted of the following (in thousands):
| December 31,
| 2013 |  | 2012 |  | 2011
Oil and natural gas properties |  |  |  |  |
Proved | $ | 10,972,816 |  |  | $ | 12,262,921 |  |  | $ | 8,969,296 |
Unproved | 531,606 |  |  | 865,863 |  |  | 689,393 |
Total oil and natural gas properties | 11,504,422 |  |  | 13,128,784 |  |  | 9,658,689 |
Less accumulated depreciation, depletion and impairment | (5,762,969 | ) |  | (5,231,182 | ) |  | (4,791,534 | )
Net oil and natural gas properties capitalized costs | $ | 5,741,453 |  |  | $ | 7,897,602 |  |  | $ | 4,867,155 |
Cost Incurred in Oil and Natural Gas Property Acquisition, Exploration, and Development | Costs Incurred in Oil and Natural Gas Property Acquisition, Exploration and Development Costs incurred in oil and natural gas property acquisition, exploration and development activities which have been capitalized are summarized as follows (in thousands):
| Year Ended December 31,
| 2013 |  | 2012 |  | 2011
Acquisitions of properties |  |  |  |  |
Proved | $ | 21,130 |  |  | $ | 1,761,556 |  |  | $ | 58,190 |
Unproved | 100,242 |  |  | 377,185 |  |  | 320,361 |
Exploration(1) | 82,775 |  |  | 120,438 |  |  | 98,849 |
Development(2) | 1,131,269 |  |  | 1,704,991 |  |  | 1,296,903 |
Total cost incurred | $ | 1,335,416 |  |  | $ | 3,964,170 |  |  | $ | 1,774,303 |
____________________
(1) | Includes seismic costs of $6.7 million, $15.3 million and $4.9 million for 2013, 2012 and 2011, respectively.
(2) | Includes Company’s share of Century Plant construction costs of $50.0 million and $25.0 million for 2012 and 2011, respectively. See Note 8.
Results of Operations for Oil, Natural Gas and NGL Producing Activities (Unaudited) | Results of Operations for Oil and Natural Gas Producing Activities (Unaudited) The Company’s results of operations from oil and natural gas producing activities for each of the years 2013, 2012 and 2011 are shown in the following table (in thousands):
| Year Ended December 31,
| 2013 |  | 2012 |  | 2011
Revenues | $ | 1,820,278 |  |  | $ | 1,759,282 |  |  | $ | 1,226,794 |
Expenses |  |  |  |  |
Production costs | 548,719 |  |  | 524,364 |  |  | 368,946 |
Depreciation and depletion | 567,732 |  |  | 568,029 |  |  | 317,246 |
Accretion of asset retirement obligations | 36,777 |  |  | 28,996 |  |  | 9,368 |
Total expenses | 1,153,228 |  |  | 1,121,389 |  |  | 695,560 |
Income before income taxes | 667,050 |  |  | 637,893 |  |  | 531,234 |
Benefit of income taxes(1) | (7,471 | ) |  | (437,595 | ) |  | (20,134 | )
Results of operations for oil and natural gas producing activities (excluding corporate overhead and interest costs) | $ | 674,521 |  |  | $ | 1,075,488 |  |  | $ | 551,368 |
____________________
(1) | Reflects the Company’s effective tax rate, including the partial valuation allowance releases.
Summary of Changes in Estimated Oil, Natural Gas and NGL Reserves (Unaudited) | The summary below presents changes in the Company’s estimated reserves for 2011, 2012 and 2013.
| Oil |  | NGL |  | Natural Gas
| (MBbls) |  | (MBbls) |  | (MMcf)(1)
Proved developed and undeveloped reserves |  |  |  |  |
As of December 31, 2010 | 205,023 |  |  | 47,091 |  |  | 1,762,665 |
Revisions of previous estimates | (6,159 | ) |  | (3,119 | ) |  | (164,845 | )
Acquisitions of new reserves | 1,309 |  |  | 224 |  |  | 2,906 |
Extensions and discoveries | 52,406 |  |  | 3,171 |  |  | 299,848 |
Sales of reserves in place | (28,137 | ) |  | (15,194 | ) |  | (476,212 | )
Production | (9,992 | ) |  | (1,838 | ) |  | (69,306 | )
As of December 31, 2011(2) | 214,450 |  |  | 30,335 |  |  | 1,355,056 |
Revisions of previous estimates | (37,394 | ) |  | 15,098 |  |  | (538,214 | )
Acquisitions of new reserves | 31,470 |  |  | 683 |  |  | 202,995 |
Extensions and discoveries | 89,656 |  |  | 27,259 |  |  | 489,302 |
Sales of reserves in place | (20,269 | ) |  | (3,287 | ) |  | (548 | )
Production | (15,868 | ) |  | (2,094 | ) |  | (93,549 | )
As of December 31, 2012(2) | 262,045 |  |  | 67,994 |  |  | 1,415,042 |
Revisions of previous estimates | (13,969 | ) |  | 3,717 |  |  | (53,432 | )
Acquisitions of new reserves | 43 |  |  | 13 |  |  | 363 |
Extensions and discoveries | 40,570 |  |  | 18,686 |  |  | 359,918 |
Sales of reserves in place | (131,769 | ) |  | (29,067 | ) |  | (228,229 | )
Production | (14,279 | ) |  | (2,291 | ) |  | (103,233 | )
As of December 31, 2013(2) | 142,641 |  |  | 59,052 |  |  | 1,390,429 |
Proved developed reserves |  |  |  |  |
As of December 31, 2010 | 73,111 |  |  | 18,854 |  |  | 784,292 |
As of December 31, 2011 | 101,578 |  |  | 17,150 |  |  | 670,382 |
As of December 31, 2012 | 136,605 |  |  | 33,785 |  |  | 896,701 |
As of December 31, 2013 | 83,893 |  |  | 35,807 |  |  | 951,609 |
Proved undeveloped reserves |  |  |  |  |
As of December 31, 2010 | 131,912 |  |  | 28,237 |  |  | 978,373 |
As of December 31, 2011 | 112,872 |  |  | 13,185 |  |  | 684,674 |
As of December 31, 2012 | 125,440 |  |  | 34,209 |  |  | 518,341 |
As of December 31, 2013 | 58,748 |  |  | 23,245 |  |  | 438,820 |
____________________
(1) | Natural gas reserves are computed at 14.65 pounds per square inch absolute and 60 degrees Fahrenheit.
(2) | Includes proved reserves attributable to noncontrolling interests at December 31, 2013, 2012 and 2011 as shown in the table below:
| December 31,
| 2013 |  | 2012 |  | 2011
Oil (MBbl) | 13,569 |  |  | 17,340 |  |  | 17,018 |
NGL (MBbl) | 4,737 |  |  | 5,132 |  |  | 1,782 |
Natural gas (MMcf) | 69,693 |  |  | 94,543 |  |  | 45,500 |
Calculation of Weighted Average Per Unit Prices (Unaudited) | The calculated weighted average per unit prices for the Company’s proved reserves and future net revenues were as follows:
| At December 31,
| 2013 |  | 2012 |  | 2011
Oil (per barrel) | $ | 95.67 |  |  | $ | 91.65 |  |  | $ | 91.35 |
NGL (per barrel) | $ | 31.40 |  |  | $ | 32.64 |  |  | $ | 46.33 |
Natural gas (per Mcf) | $ | 3.65 |  |  | $ | 2.29 |  |  | $ | 4.06 |
Standardized Measure of Discounted Future Cash Flows (Unaudited) | The summary below presents the Company’s future net cash flows relating to proved oil, natural gas and NGL reserves based on the standardized measure in ASC Topic 932 (in thousands).
| At December 31,
| 2013 |  | 2012 |  | 2011
Future cash inflows from production | $ | 19,937,484 |  |  | $ | 29,482,544 |  |  | $ | 26,494,942 |
Future production costs | (6,843,713 | ) |  | (8,899,465 | ) |  | (7,392,104 | )
Future development costs(1) | (2,546,680 | ) |  | (4,021,051 | ) |  | (2,977,993 | )
Future income tax expenses | (2,283,541 | ) |  | (3,721,509 | ) |  | (4,043,953 | )
Undiscounted future net cash flows | 8,263,550 |  |  | 12,840,519 |  |  | 12,080,892 |
10% annual discount | (4,245,939 | ) |  | (7,000,151 | ) |  | (6,864,555 | )
Standardized measure of discounted future net cash flows(2) | $ | 4,017,611 |  |  | $ | 5,840,368 |  |  | $ | 5,216,337 |
____________________
(1) | Includes abandonment costs.
(2) | Includes approximately $781.6 million, $952.7 million and $932.8 million attributable to noncontrolling interests at December 31, 2013, 2012 and 2011 respectively.
Estimate of Changes in Standardized Measure of Discounted Future Net Cash Flows from Proved Reserves (Unaudited) | The following table represents the Company’s estimate of changes in the standardized measure of discounted future net cash flows from proved reserves (in thousands):
Present value as of December 31, 2010 | $ | 3,683,515 |
Changes during the year |
Revenues less production and other costs | (857,848 | )
Net changes in prices, production and other costs | 1,264,736 |
Development costs incurred | 575,546 |
Net changes in future development costs | 87,080 |
Extensions and discoveries | 1,812,167 |
Revisions of previous quantity estimates | (345,965 | )
Accretion of discount | 455,501 |
Net change in income taxes | (833,841 | )
Purchases of reserves in-place | 44,934 |
Sales of reserves in-place | (558,257 | )
Timing differences and other(1) | (111,231 | )
Net change for the year | 1,532,822 |
Present value as of December 31, 2011(2) | 5,216,337 |
Changes during the year |
Revenues less production and other costs | (1,234,918 | )
Net changes in prices, production and other costs | (2,555,391 | )
Development costs incurred | 766,943 |
Net changes in future development costs | (45,397 | )
Extensions and discoveries | 2,092,423 |
Revisions of previous quantity estimates | (530,755 | )
Accretion of discount | 678,200 |
Net change in income taxes | 11,433 |
Purchases of reserves in-place | 1,708,301 |
Sales of reserves in-place | (410,415 | )
Timing differences and other(1) | 143,607 |
Net change for the year | 624,031 |
Present value as of December 31, 2012(2) | 5,840,368 |
Changes during the year |
Revenues less production and other costs | (1,271,559 | )
Net changes in prices, production and other costs | 271,566 |
Development costs incurred | 474,275 |
Net changes in future development costs | (207,729 | )
Extensions and discoveries | 1,406,102 |
Revisions of previous quantity estimates | (296,418 | )
Accretion of discount | 711,385 |
Net change in income taxes | 477,328 |
Purchases of reserves in-place | 1,628 |
Sales of reserves in-place | (3,172,187 | )
Timing differences and other(1) | (217,148 | )
Net change for the year | (1,822,757 | )
Present value as of December 31, 2013(2) | $ | 4,017,611 |
____________________
(1) | The change in timing differences and other are related to revisions in the Company’s estimated time of production and development.
(2) | Includes approximately $781.6 million, $952.7 million and $932.8 million attributable to noncontrolling interests at December 31, 2013, 2012, and 2011 respectively.
Noncontrolling Interest |
Reserve Quantities [Line Items] |
Summary of Changes in Estimated Oil, Natural Gas and NGL Reserves (Unaudited) |
| Includes proved reserves attributable to noncontrolling interests at December 31, 2013, 2012 and 2011 as shown in the table below:
| December 31,
| 2013 |  | 2012 |  | 2011
Oil (MBbl) | 13,569 |  |  | 17,340 |  |  | 17,018 |
NGL (MBbl) | 4,737 |  |  | 5,132 |  |  | 1,782 |
Natural gas (MMcf) | 69,693 |  |  | 94,543 |  |  | 45,500 |

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