Current HTK Clients
- Amerada Hess 
- American Exploration, Inc. 
- Anadarko 
- Apache Corporation 
- Applied Drilling Technology, Inc. 
- Arena Energy, LLC 
- ATP Oil & Gas Corporation 
- Barrett Resources Corporation 
- Basin Exploration 
- BP Exploration 
- Brigham Exploration 
- Century Exploration 
- Century Offshore, Inc. 
- Chesapeake Energy Corporation 
- Chieftain International 
- Cockrell Oil Corporation 
- Common Resources 
- Contango Operators 
- Davis Petroleum 
- Devon Energy 
- Dominion Exploration 
- Elf Exploration, Inc. 
- EnCana 
- EOG Resources 
- ExxonMobil 
- F-W Oil Exploration 
- Fairways Offshore Exploration 
- Forest Oil Corporation 
- Goldston Oil 
- Hall-Houston Oil Company 
- Hilcorp Energy 
- Horizon Production & Operating 
- Houston Energy 
- IP Petroleum 
- Kerr McGee 
- King Ranch Oil & Gas 
- LLOG Exploration Company 
- Marathon Oil 
- Mariner Energy 
- Newfield Exploration 
- Paloma Offshore 
- Phillips Petroleum 
- Pioneer Drilling 
- Prime Offshore 
- R.P. Small Corp. 
- Samedan Oil Corporation 
- Santa Fe Energy 
- Seagull Energy 
- Southwestern Energy Production 
- Spinnaker Exploration 
- Statoil Exploration 
- Sterling Energy 
- Talisman Energy, USA 
- Tarpon Operating 
- Tenneco Energy 
- Torch Operating Company 
- Total S.A. 
- Triton Engineering Services 
- Vess Oil Corporation 
- Wagner Oil 
- Wapiti Energy 
- Westport Oil & Gas 
- Williams Production 
- Yuma Exploration & Production Co. 

