Exhibit 12.1

Seitel, Inc.

Statement Showing Computation of Ratio of Earnings to Fixed Charges

(In thousands)

(Unaudited)

	Year Ended December 31,														Three Months Ended
	2002			2003			2004			2005			2006		3/31/2006		3/31/2007
Fixed charges:
Interest expense	$	21,248		$	20,526		$	25,356		$	24,845		$	24,208	$	6,045	$	12,185
Capitalized interest expense		664			—			—			—			—		—		—
Portion of rental expense representative of interest factor		471			300			418			426			460		104		136
Total fixed charges	$	22,383		$	20,826		$	25,774		$	25,271		$	24,668	$	6,149	$	12,321
Earnings before fixed charges:
Income (loss) from continuing operations before income taxes and cumulative effect of change in accounting principle	$	(156,873	)	$	(36,878	)	$	(95,580	)	$	(6,562	)	$	46,641	$	6,970	$	(34,720	)
Fixed charges		22,383			20,826			25,774			25,271			24,668		6,149		12,321
Capitalized interest expense		(664	)		—			—			—			—
Total earnings before fixed charges	$	(135,154	)	$	(16,052	)	$	(69,806	)	$	18,709		$	71,309	$	13,119	$	(22,399	)
Ratio of earnings to fixed charges:
Earnings before fixed charges	$	(135,154	)	$	(16,052	)	$	(69,806	)	$	18,709		$	71,309	$	13,119	$	(22,399	)
Fixed charges		22,383			20,826			25,774			25,271			24,668		6,149		12,321
Ratio of earnings to fixed charges		—			—			—			—			2.9		2.1		—