| 1 | Aera Energy LLC | | Oil & Gas Operator | Oct 2024 |
| 2 | Amrich Energy Inc. | | Oil & Gas Operator | Dec 2022 |
| 3 | Arco Oil & Gas Company | Plano, TX 75086 | Oil & Gas Operator | Mar 2006 |
| 4 | Argo Petroleum Corporation | | Oil & Gas Operator | Dec 1989 |
| 5 | Asphalta LLC | | Oil & Gas Operator | Oct 2024 |
| 6 | B. E. Conway Energy Inc. | | Oil & Gas Operator | Oct 2024 |
| 7 | Barham-Boyne Oil Co. Inc. | | Oil Operator | Dec 1992 |
| 8 | California Resources Production Corporation | | Oil & Gas Operator | Oct 2024 |
| 9 | Calresources LLC | | Oil & Gas Operator | Dec 1996 |
| 10 | Cat Canyon Resources LLC | | Oil & Gas Operator | Sep 2024 |
| 11 | Celeron Oil & Gas Company | | Oil & Gas Operator | Dec 1987 |
| 12 | Champlin Petroleum Co. | Rock Springs, WY 82902 | Oil & Gas Operator | Mar 1991 |
| 13 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Dec 2024 |
| 14 | Coastal Oil & Gas Corporation | Houston, TX 77252 | Oil & Gas Operator | Dec 2009 |
| 15 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 16 | E & B Natural Resources Management Corporation | Hays, KS 67601 | Oil & Gas Operator | Sep 2024 |
| 17 | Freeport-McMoran Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2024 |
| 18 | Geo Petroleum, Inc. | Borger, TX 79007 | Oil & Gas Operator | Dec 2024 |
| 19 | Golden Gate Oil Operations LLC | | Oil & Gas Operator | Sep 2024 |
| 20 | Grace Petroleum Corp. | Tulsa, OK 74103 | Oil & Gas Operator | Oct 1997 |
| 21 | Grayson Service Inc. | | Oil & Gas Operator | Sep 2024 |
| 22 | Haussler Farms Inc. | | Oil Operator | Dec 1992 |
| 23 | HDT Inc. | | Oil & Gas Operator | Sep 2024 |
| 24 | Hilliard Oil & Gas Inc | New Orleans, LA 70112 | Oil & Gas Operator | May 2001 |
| 25 | Husky Oil Company | Cody, WY 82414 | Oil & Gas Operator | Dec 1984 |
| 26 | Hvi Cat Canyon Inc. | | Oil & Gas Operator | Sep 2024 |
| 27 | Kenneth H. Hunter Jr. | | Oil & Gas Operator | Dec 1991 |
| 28 | Kore Energy LLC | | Oil & Gas Operator | Sep 2024 |
| 29 | Krummrich Engineering Corporation | | Oil & Gas Operator | Sep 2024 |
| 30 | Laguna County Sanitation District | | Oil & Gas Operator | Dec 2003 |
| 31 | Magness Petroleum Company | | Oil & Gas Operator | Dec 1994 |
| 32 | Marathon Oil Company | Houston, TX 77024 | Oil & Gas Operator | Oct 2024 |
| 33 | McFarland Energy, Inc. | New Orleans, LA 70160 | Oil & Gas Operator | Dec 2009 |
| 34 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 35 | Newbridge Resources, LLC | Houston, TX 77056 | Oil & Gas Operator | Oct 2024 |
| 36 | Nordic Oil Company | | Oil & Gas Operator | Dec 1999 |
| 37 | Northern Michigan Expl Co | | Oil & Gas Operator | Jul 1990 |
| 38 | Off Broadway Mineral Rights LLC | | Oil & Gas Operator | Sep 2024 |
| 39 | Ogle Petroleum Inc. | | Oil & Gas Operator | Dec 1989 |
| 40 | Pacific Coast Energy Company LP | | Oil & Gas Operator | Oct 2024 |
| 41 | Petro Resources, Inc. | Fulton, TX 78358 | Oil & Gas Operator | Dec 2024 |
| 42 | Petrominerals Corp. | | Oil & Gas Operator | Dec 2003 |
| 43 | Pre Resources LLC | | Oil & Gas Operator | Sep 2024 |
| 44 | Pyramid Oil Co. | Litchfield PK, AZ 85340 | Oil & Gas Operator | Jan 2018 |
| 45 | Quintana Petroleum Corporation | Denver, CO 80265 | Oil & Gas Operator | Mar 1998 |
| 46 | RMR Energy Resources | | Oil Operator | Sep 2024 |
| 47 | Saba Petroleum Inc. | | Oil & Gas Operator | Mar 2006 |
| 48 | Santa Maria Energy LLC | | Oil & Gas Operator | Sep 2024 |
| 49 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | Nov 2024 |
| 50 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 51 | Sierra Resources, Inc. | Oklahoma City, OK 73142 | Oil & Gas Operator | Oct 2024 |
| 52 | Southern California Gas Company | | Oil & Gas Operator | Oct 2024 |
| 53 | Team Operating, L.L.C. | Pinehurst, TX 77362 | Oil & Gas Operator | Dec 2024 |
| 54 | Temblor Petroleum Co. LLC | | Oil & Gas Operator | Sep 2024 |
| 55 | Thriftway Company | Farmington, NM 87401 | Oil & Gas Operator | Dec 1996 |
| 56 | Towne Exploration Company LP | | Oil & Gas Operator | Oct 2024 |
| 57 | Tri-Valley Oil & Gas Co. | | Oil & Gas Operator | Sep 2024 |
| 58 | Triton Oil & Gas Corp. | Houston, TX 77002 | Oil & Gas Operator | Nov 2014 |
| 59 | Underground Energy Inc. | | Oil & Gas Operator | Sep 2024 |
| 60 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 61 | Vaquero Energy Inc | Bakersfield, CA 93309 | Oil & Gas Operator | May 2023 |
| 62 | Venoco LLC | | Oil & Gas Operator | Sep 2024 |
| 63 | Vintage Production California LLC | | Oil & Gas Operator | Jun 2016 |
| 64 | Viscosity Control Systems Inc. | | Oil & Gas Operator | Dec 1995 |