Segment Information

3 Months Ended

Mar. 31, 2012

Segment Reporting [Abstract]

Segment Information

Segment Information

We have two operating segments referred to as the Drilling Services Division and the Production Services Division which is the basis management uses for making operating decisions and assessing performance.

Drilling Services Division—Our Drilling Services Division provides contract land drilling services with its fleet of 62 drilling rigs which are currently assigned to the following locations:

Drilling Division Locations	Rig Count
South Texas	15
East Texas	3
West Texas	19
North Dakota	9
Utah	4
Appalachia	4
Colombia	8
	62

Production Services Division—Our Production Services Division provides a range of services to exploration and production companies, including well services, wireline services, coiled tubing services, and fishing and rental services. Our production services operations are managed through locations concentrated in the major United States onshore oil and gas producing regions in the Gulf Coast, Mid-Continent, Rocky Mountain and Appalachian states.We currently have a fleet of 97 well service rigs consisting of eighty-seven 550 horsepower rigs, nine 600 horsepower rigs and one 400 horsepower rig. We currently provide wireline and coiled tubing services with a fleet of 108 wireline units and ten coiled tubing units, and we provide rental services with approximately $15.4 million of fishing and rental tools.

The following tables set forth certain financial information for our two operating segments and corporate as of and for the three months ended March 31, 2012 and 2011 (amounts in thousands):

	As of and for the three months ended March 31, 2012
	Drilling Services Division		Production Services Division		Corporate		Total
Identifiable assets	$	745,072	$	418,934	$	35,078	$	1,199,084
Revenues	$	124,304	$	107,674	$	—	$	231,978
Operating costs	81,077		60,696		—		141,773
Segment margin	$	43,227	$	46,978	$	—	$	90,205
Depreciation and amortization	$	25,489	$	12,718	$	166	$	38,373
Capital expenditures	$	80,584	$	31,554	$	239	$	112,377

	As of and for the three months ended March 31, 2011
	Drilling Services Division		Production Services Division		Corporate		Total
Identifiable assets	$	581,725	$	241,836	$	24,426	$	847,987
Revenues	$	99,756	$	53,593	$	—	$	153,349
Operating costs	67,509		33,228		—		100,737
Segment margin	$	32,247	$	20,365	$	—	$	52,612
Depreciation and amortization	$	24,486	$	7,495	$	275	$	32,256
Capital expenditures	$	19,113	$	15,444	$	137	$	34,694

The following table reconciles the segment profits reported above to income from operations as reported on the consolidated statements of operations for the three months ended March 31, 2012 and 2011 (amounts in thousands):

	Three months ended March 31,
	2012			2011
Segment margin	$	90,205		$	52,612
Depreciation and amortization	(38,373		)	(32,256		)
General and administrative	(21,143		)	(14,521		)
Bad debt recovery	91			84
Impairment of equipment	(1,032		)	—
Income from operations	$	29,748		$	5,919

The following table sets forth certain financial information for our international operations in Colombia as of and for the three months ended March 31, 2012 and 2011 which is included in our Drilling Services Division (amounts in thousands):

	As of and for the three months ended March 31,
	2012		2011
Identifiable assets	$	152,854	$	157,285
Revenues	$	23,816	$	24,234

Identifiable assets as of March 31, 2012 and 2011 include five drilling rigs that are owned by our Colombia subsidiary and three drilling rigs that are owned by one of our domestic subsidiaries and leased to our Colombia subsidiary.