| Revenues | — | — | — |
| Natural gas sales | 714.16a | 831.81a | 1,998.45a |
| Oil and condensate sales | 101.59a | 99.85a | 147.44a |
| Natural gas liquid sales | 112.86a | 119.72a | 184.96a |
| Net gain (loss) on natural gas, oil and NGL derivatives | 29.53a | 740.32a | -999.75a |
| Total revenues | 958.13a | 1,791.7a | 1,331.11a |
| Operating expenses | — | — | — |
| Lease operating expenses | -70.11a | -68.65a | -64.79a |
| Taxes other than income | -29.74a | -33.72a | -60.14a |
| Transportation, gathering, processing and compression | -351.24a | -348.63a | -357.25a |
| Depreciation, depletion and amortization | -325.72a | -319.72a | -267.76a |
| Impairment of oil and natural gas properties | -373.21a | | |
| General and administrative expenses | -42.56a | -38.6a | -35.3a |
| Restructuring costs | | -4.76a | |
| Accretion expense | -2.31a | -2.78a | -2.75a |
| Total operating expenses | -1,194.89a | -816.86a | -787.99a |
| (Loss) income from operations | -236.76a | 974.85a | 543.13a |
| Other expense (income) | — | — | — |
| Interest expense | -59.98a | -57.07a | -59.77a |
| Loss on debt extinguishment | -13.39a | | |
| Other, net | 7.34a | -27.98a | -11.35a |
| Total other expense | -80.71a | -29.09a | -48.43a |
| (Loss) income before income taxes | -317.46a | 945.76a | 494.7a |
| Income tax benefit | — | — | — |
| Current | | | |
| Deferred | -56.08a | -525.16a | |
| Total income tax benefit | -56.08a | -525.16a | |
| Net (loss) income | -261.39a | 1,470.92a | 494.7a |
| Dividends on preferred stock | -4.23a | -4.84a | -5.44a |
| Participating securities - preferred stock | | -212.36a | -76.4a |
| Net (loss) income attributable to common stockholders | -265.62a | 1,253.72a | 412.86a |