Top 50 Reporting Companies
- EOG Resources, Inc. - 5991 Disclosures
- Anadarko Petroleum Corporation - 5300 Disclosures
- XTO Energy/ExxonMobil - 4616 Disclosures
- Chesapeake Operating, Inc. - 4580 Disclosures
- Pioneer Natural Resources - 4551 Disclosures
- Apache Corporation - 3354 Disclosures
- Devon Energy Production Company L. P. - 3312 Disclosures
- Encana Oil & Gas (USA) Inc. - 3083 Disclosures
- Marathon Oil - 2957 Disclosures
- Aera Energy Llc - 2905 Disclosures
- Occidental Oil and Gas - 2814 Disclosures
- ConocoPhillips Company/Burlington Resources - 2802 Disclosures
- Chevron USA Inc. - 2492 Disclosures
- CHESAPEAKE - 2488 Disclosures
- Newfield Exploration - 2346 Disclosures
- COG Operating LLC - 2269 Disclosures
- Southwestern Energy - 2204 Disclosures
- Continental Resources, Inc - 2158 Disclosures
- WPX ENERGY - 1822 Disclosures
- Whiting Petroleum - 1739 Disclosures
- Energen Resources Corporation - 1736 Disclosures
- Hess Corporation - 1653 Disclosures
- Noble Energy, Inc. - 1647 Disclosures
- SandRidge Energy - 1625 Disclosures
- BHP Billiton Petroleum - 1590 Disclosures
- QEP Energy Company - 1551 Disclosures
- EP ENERGY - 1519 Disclosures
- XTO Energy - 1438 Disclosures
- EQT PRODUCTION - 1435 Disclosures
- EOG Resources, Inc - 1347 Disclosures
- SM Energy - 1330 Disclosures
- PDC Energy - 1294 Disclosures
- Antero Resources Corporation - 1077 Disclosures
- Range Resources Corporation - 1056 Disclosures
- APACHE CORP - 1042 Disclosures
- Noble Energy Inc - 1040 Disclosures
- Parsley Energy Operations, LLC - 1036 Disclosures
- Diamondback E&P LLC - 1001 Disclosures
- Ultra Resources - 980 Disclosures
- Cimarex Energy Co. - 973 Disclosures
- SEECO, Inc. - 958 Disclosures
- Cabot Oil & Gas Corp - 900 Disclosures
- CrownQuest Operating, LLC - 842 Disclosures
- BP America Production Company - 836 Disclosures
- Oasis Petroleum - 812 Disclosures
- EnerVest, Ltd. - 811 Disclosures
- Laredo Petroleum, Inc. - 766 Disclosures
- Murphy Exploration and Production USA - 762 Disclosures
- EXTRACTION OIL & GAS LLC - 755 Disclosures
- Lewis Energy Group - 752 Disclosures