Exhibit 12
RATIO OF EARNINGS (DEFICIT) TO FIXED CHARGES
| Year Ended December 31, | Nine Months Ended September 30,  | 
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| 2016 | 2015 | 2014 | 2013 | 2012 | 2017 | 2016 | ||||||||||||||||||||||
| (in thousands except for ratio) | ||||||||||||||||||||||||||||
|   Earnings  | 
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|   (Loss) income from continuing operations before income taxes  | 
$ | (982,622 | ) | $ | (1,480,885 | ) | $ | 400,744 | $ | 251,328 | $ | 98,199 | $ | 281,389 | $ | (743,094 | ) | |||||||||||
|   Interest expense including capitalized interest  | 
72,678 | 64,801 | 33,673 | 24,622 | 7,458 | 83,550 | 53,813 | |||||||||||||||||||||
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|   Income before fixed charges  | 
$ | (909,944 | ) | $ | (1,416,084 | ) | $ | 434,417 | $ | 275,950 | $ | 105,657 | $ | 364,939 | $ | (689,281 | ) | |||||||||||
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|   Fixed Charges  | 
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|   Interest expense  | 
72,678 | 64,801 | 33,673 | 24,622 | 7,458 | 83,550 | 53,813 | |||||||||||||||||||||
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|   Total fixed charges  | 
72,678 | 64,801 | 33,673 | 24,622 | 7,458 | 83,550 | 53,813 | |||||||||||||||||||||
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|   Earnings/fixed charge coverage ratio  | 
N/A | (1) | N/A | (1) | 12.9 | 11.2 | 14.2 | 4.4 | N/A | (1) | ||||||||||||||||||
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| (1) | Earnings for the years ended December 31, 2016 and 2015 and the nine months ended September 30, 2016 were insufficient to cover fixed charges by $1.1 billion, $1.5 billion and $796.9 million, respectively. |