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Unaudited Condensed Consolidating Statements of Operations of SandRidge Energy, Inc. and Wholly Owned Subsidiary Guarantors and Non-Guarantors (Detail) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Schedule of Condensed Consolidating Statement of Operations [Line Items] |  |  |  |
Total revenues | $ 511,690 |  | $ 381,635 |
Expenses |  |  |  |
Direct operating expenses | 170,060 |  | 124,158 |
General and administrative | 79,444 |  | 50,301 |
Depreciation, depletion, amortization and accretion | 182,641 |  | 104,186 |
Loss on derivative contracts | 40,897 |  | 254,646 |
Loss on sale of assets | 398,174 |  | 3,080 |
Total expenses | 871,216 |  | 533,291 |
(Loss) income from operations | (359,526) | [1] | (151,656) | [1]
Equity earnings from subsidiaries | 0 |  | 0 |
Interest income (expense) | (85,910) |  | (66,965) |
Loss on extinguishment of debt | (82,005) |  | 0 |
Other income (expense), net | 611 |  | 2,468 |
Loss before income taxes | (526,830) |  | (216,153) |
Income tax (benefit) expense | 4,429 |  | 71 |
Net loss | (531,259) |  | (216,224) |
Less: net (loss) income attributable to noncontrolling interest | (51,919) |  | 1,954 |
Net loss attributable to SandRidge Energy, Inc. | (479,340) |  | (218,178) |
Parent |  |  |  |
Schedule of Condensed Consolidating Statement of Operations [Line Items] |  |  |  |
Total revenues | 0 |  | 0 |
Expenses |  |  |  |
Direct operating expenses | 0 |  | 0 |
General and administrative | 87 |  | 86 |
Depreciation, depletion, amortization and accretion | 0 |  | 0 |
Loss on derivative contracts | 0 |  | 0 |
Loss on sale of assets | 0 |  |  |
Total expenses | 87 |  | 86 |
(Loss) income from operations | (87) |  | (86) |
Equity earnings from subsidiaries | (306,884) |  | (94,527) |
Interest income (expense) | (86,103) |  | (66,706) |
Loss on extinguishment of debt | (82,005) |  |  |
Other income (expense), net | 0 |  | 0 |
Loss before income taxes | (475,079) |  | (161,319) |
Income tax (benefit) expense | 4,321 |  | (60) |
Net loss | (479,400) |  | (161,259) |
Less: net (loss) income attributable to noncontrolling interest | 0 |  | 0 |
Net loss attributable to SandRidge Energy, Inc. | (479,400) |  | (161,259) |
Guarantors |  |  |  |
Schedule of Condensed Consolidating Statement of Operations [Line Items] |  |  |  |
Total revenues | 440,318 |  | 322,226 |
Expenses |  |  |  |
Direct operating expenses | 163,611 |  | 114,066 |
General and administrative | 76,819 |  | 48,113 |
Depreciation, depletion, amortization and accretion | 159,889 |  | 90,917 |
Loss on derivative contracts | 30,900 |  | 220,935 |
Loss on sale of assets | 290,956 |  |  |
Total expenses | 722,175 |  | 474,031 |
(Loss) income from operations | (281,857) |  | (151,805) |
Equity earnings from subsidiaries | (26,641) |  | (2,303) |
Interest income (expense) | 192 |  | (13) |
Loss on extinguishment of debt | 0 |  |  |
Other income (expense), net | 1,422 |  | 59,594 |
Loss before income taxes | (306,884) |  | (94,527) |
Income tax (benefit) expense | 0 |  | 0 |
Net loss | (306,884) |  | (94,527) |
Less: net (loss) income attributable to noncontrolling interest | 0 |  | 0 |
Net loss attributable to SandRidge Energy, Inc. | (306,884) |  | (94,527) |
Non-Guarantors |  |  |  |
Schedule of Condensed Consolidating Statement of Operations [Line Items] |  |  |  |
Total revenues | 77,536 |  | 91,193 |
Expenses |  |  |  |
Direct operating expenses | 12,241 |  | 41,752 |
General and administrative | 2,970 |  | 2,433 |
Depreciation, depletion, amortization and accretion | 22,752 |  | 13,269 |
Loss on derivative contracts | 9,997 |  | 33,711 |
Loss on sale of assets | 107,218 |  |  |
Total expenses | 155,178 |  | 91,165 |
(Loss) income from operations | (77,642) |  | 28 |
Equity earnings from subsidiaries | 0 |  | 0 |
Interest income (expense) | 1 |  | (246) |
Loss on extinguishment of debt | 0 |  |  |
Other income (expense), net | (811) |  | 0 |
Loss before income taxes | (78,452) |  | (218) |
Income tax (benefit) expense | 108 |  | 131 |
Net loss | (78,560) |  | (349) |
Less: net (loss) income attributable to noncontrolling interest | 0 |  | 0 |
Net loss attributable to SandRidge Energy, Inc. | (78,560) |  | (349) |
Eliminations |  |  |  |
Schedule of Condensed Consolidating Statement of Operations [Line Items] |  |  |  |
Total revenues | (6,164) |  | (31,784) |
Expenses |  |  |  |
Direct operating expenses | (5,792) |  | (31,660) |
General and administrative | (432) |  | (331) |
Depreciation, depletion, amortization and accretion | 0 |  | 0 |
Loss on derivative contracts | 0 |  | 0 |
Loss on sale of assets | 0 |  |  |
Total expenses | (6,224) |  | (31,991) |
(Loss) income from operations | 60 |  | 207 |
Equity earnings from subsidiaries | 333,525 |  | 96,830 |
Interest income (expense) | 0 |  | 0 |
Loss on extinguishment of debt | 0 |  |  |
Other income (expense), net | 0 |  | (57,126) |
Loss before income taxes | 333,585 |  | 39,911 |
Income tax (benefit) expense | 0 |  | 0 |
Net loss | 333,585 |  | 39,911 |
Less: net (loss) income attributable to noncontrolling interest | (51,919) |  | 1,954 |
Net loss attributable to SandRidge Energy, Inc. | $ 385,504 |  | $ 37,957 |
[1] | Exploration and production segment income from operations includes unrealized losses of $24.8 million and $129.2 million on commodity derivative contracts for the three-month periods ended March 31, 2013 and 2012, respectively. Exploration and production segment also includes a loss on the sale of the Permian Properties of $399.1 million for the three-month period ended March 31, 2013.

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