The Williams Companies, Inc
From Wikimarcellus
Companies Actively Drilling
- AB Resources LLC
- Alta Resources LLC
- Anadarko Exploration & Production Company
- Arbor Resources of Michigan
- Atlas Energy
- Baker Gas
- Belden & Blake Corporation
- BLX Inc
- Cabot Oil and Gas Corp
- Carrizo Oil and Gas
- Chesapeake Energy
- Chief Oil and Gas
- CONSOL Energy Inc
- Devon Energy
- Dominion Exploration and Production Inc
- Dominion Gas
- East Resources
- EnCana Corp
- Energy Corporation of America
- Enerplus
- EOG Resources
- Epsilon Energy Ltd
- EQT Corporation
- EXCO Resources, Inc
- Fortuna Energy Inc
- Gastar Exploration Ltd
- Gastem
- Guardian Exploration LLC
- Hanley and Bird, Inc
- Hess Corp
- Huntley & Huntley, Inc
- Interstate Gas Marketing Inc
- J.F. Deem Oil and Gas
- Magnum Hunter Resources Corp
- Marathon Oil Corporation
- MDS Energy
- MegaEnergy Inc
- Mid-East Gas Inc./M.M. & V Energy LLC
- Mountain V
- National Fuel
- Newfield Exploration Co
- Norse Energy
- North Coast Energy
- NOVUS Exploration, LLC
- PC Exploration
- Penneco Oil Company
- Penn Virginia Corporation
- Pennsylvania General Energy Corp
- Petroleum Development Corp
- Phillips Resources, Inc
- PostRock
- Quest Resource Corporation
- Range Resources
- Rex Energy Corporation
- Rice Energy LLC
- Rimrock Energy LLC
- Royal Dutch Shell
- Samson Investment Company
- Seneca Energy Production Company
- SM Energy Company
- Snyder Brothers Inc.
- Southwestern Energy Company
- South Jersey Industries
- Statoil-Hydro
- Stone Energy Corporation
- Talisman Energy Inc
- The Williams Companies, Inc
- Trans Energy Inc
- Turm Oil
- Ultra Petroleum Corp
- Unit Corp
- Victory Energy Corporation
- Vista Resources
- XTO Energy
