Southwestern Energy Services S-3ASR Automatic shelf registration

Exhibit 12.1

SOUTHWESTERN ENERGY COMPANY AND SUBSIDIARIES

COMPUTATION OF RATIO OF EARNINGS TO FIXED CHARGES

($ in 000’s)

	Quarter ended September 30,			Years ended December 31,
	2012			2011			2010			2009			2008			2007
Earnings:
Add:
Income (loss) before income taxes	$	(230,570	)	$	1,050,990		$	995,492		$	(52,155	)	$	919,532		$	357,374
Fixed charges		33,197			97,609			84,740			77,766			79,785			48,802
Amortization of capitalized interest		9,204			12,083			10,336			7,636			5,401			4,176
Deduct:
Interest capitalized		(15,915	)		(45,652	)		(32,916	)		(40,209	)		(34,532	)		(13,792	)
Noncontrolling interest		—			—			285			142			(587	)		(345	)
Earnings for computation	$	(204,084	)	$	1,115,030		$	1,057,937		$	(6,820	)	$	969,599		$	396,215
Fixed charges:
Gross interest expense	$	25,463		$	65,421		$	57,144		$	55,581		$	61,152		$	36,191
Amortization of debt issuance/discount		982			3,455			1,610			1,633			1,691			832
Portion of rents representative of interest		6,752			28,733			25,986			20,552			16,942			11,778
Total fixed charges	$	33,197		$	97,609		$	84,740		$	77,766		$	79,785		$	48,801
Ratio of earnings to fixed charges		—	1		11.42			12.48			—	1		12.15			8.12
Earnings insufficient to cover fixed charges	$	(237,281	)		N/A			N/A		$	(84,586	)		N/A			N/A

¹  During the quarter-ended September 30, 2012 and year-ended December 31, 2009, the Company recorded a non-cash full cost ceiling impairment of $441.5 and $907.8 million, respectively. Excluding the impairment, the ratio of earnings to fixed charges would be 7.15 and 11.59 for the quarter-ended September 30, 2012 and year-ended December 31, 2009, respectively.