Drilling Rig, Offshore Jackups
- Provides drilling rigs, offshore jackups and workover rigs for drilling projects worldwide, for sale, day rate or lease.
- http://www.midwestoilgas.com/

Kingdom Drilling
- Provides drilling operations guidelines. Free downloads, drilling operational data, training course information, links to other drilling related sites.
- http://www.kingdomdrilling.co.uk

Wisco Moran Drilling Company
- Land rig drilling contractor working in Texas RRC Districts 2,3,4.
- http://www.wiscomoran.com/

Pride International
- Provides onshore and offshore drilling, workover, and related services.
- http://www.prideinternational.com/

Nabors Industries, Inc.
- Onshore and offshore drilling, well-servicing, and workover contractor.
- http://www.nabors.com/

GlobalSantaFe
- Provides land and mobile offshore drilling services, oil and gas drilling with fully-manned mobile drilling rigs, jackups, floating drilling rigs, submersibles, turnkey drilling, management services.
- http://www.gsfdrill.com/

Precision Drilling
- Operating 242 rigs, mainly in Canada. Most of these are workover rigs.
- http://www.precisiondrilling.com/

Noble Drilling Services Inc.
- Operating approximately 50 offshore drilling rigs worldwide.
- http://www.noblecorp.com/

Target Energy Group
- Provides independent drilling services including directional drilling, measurement-while-drilling and logging-while-drilling services. Offers news, a location map and recruitment information. Offices in UK, USA and Abu Dhabi.
- http://www.target-energy.com/

PathFinder Energy Services
- Independent supplier of logging while drilling and measurement while drilling services. Headquartered in Houston, Texas.
- http://www.pathfinderlwd.com/