Precision Drilling Trust, through its subsidiaries, provides contract drilling, service rig, and ancillary services to oil and natural gas exploration and production companies in the United States and Canada. It operates in two segments, Contract Drilling Services, and Completion and Production Services. The Contract Drilling Services segment engages in the provision of land drilling services, and camp and catering services; procurement and distribution of oilfield supplies; and manufacture and ...

Pride International, Inc. provides offshore and onshore contract drilling and related services to oil and natural gas companies worldwide. The company offers its services through the use of mobile offshore drilling and land-based drilling rigs, and work over rigs. As of February 28, 2007, it owned 272 rigs, consisting of 2 deepwater drillships, 12 semisubmersible rigs, 28 jackup rigs, 16 tender-assisted, barge and platform rigs, and 214 land-based drilling and workover rigs. In addition, the com ...

Patterson-UTI Energy, Inc., together with its subsidiaries, provides onshore contract drilling services to independent oil and natural gas operators in North America. It provides pressure pumping services consisting of well stimulation and cementing for completion of new wells and remedial work on existing wells to oil and natural gas operators primarily in the Appalachian Basin. The company also provides drilling fluids, completion fluids, and related services to oil and natural gas operators o ...

ENSCO International Incorporated, together with its subsidiaries, operates as an offshore contract drilling company in the United States and internationally. Its offshore contract drilling operations include exploration, development, and production of oil and natural gas, as well as the provision of offshore drilling services to the international oil and gas industry. As of February 15, 2007, the company operated a fleet of 43 jackup rigs, 1 ultra-deepwater semisubmersible rig, and 1 barge rig. ...