| 1 | Aba Energy Corporation | | Oil & Gas Operator | Mar 2025 |
| 2 | Aera Energy LLC | | Oil & Gas Operator | Mar 2025 |
| 3 | Agey Petroleum Co. | | Oil & Gas Operator | Dec 1998 |
| 4 | Anschutz Exploration Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 5 | Atlantic Oil Company | | Oil & Gas Operator | Feb 2025 |
| 6 | Beacon Oil Company | | Oil Operator | Dec 1985 |
| 7 | Big Valley Resources | | Oil Operator | Dec 2008 |
| 8 | Brea Oil Company Inc. | | Oil & Gas Operator | Oct 2001 |
| 9 | C. Case Company | | Oil & Gas Operator | Feb 2025 |
| 10 | California Resources Production Corporation | | Oil & Gas Operator | Mar 2025 |
| 11 | Calresources LLC | | Oil & Gas Operator | Dec 1996 |
| 12 | Capitol Oil Corporation | | Oil & Gas Operator | Feb 2025 |
| 13 | Case'S Used Equipment | | Oil & Gas Operator | Feb 2025 |
| 14 | Cen Cal Drilling Inc. | | Oil & Gas Operator | Dec 1994 |
| 15 | Chambers & Mouren | | Oil & Gas Operator | Mar 2025 |
| 16 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 17 | Clofas Case Oil Co. | | Oil & Gas Operator | Feb 2025 |
| 18 | Coelho & Case Oil Company | | Oil & Gas Operator | Dec 1997 |
| 19 | Commander Oil Company LTD. | | Oil & Gas Operator | Dec 2021 |
| 20 | Compass Global Resources LLC | | Oil & Gas Operator | Dec 2015 |
| 21 | Coyote Oil Company. LTD. | | Oil & Gas Operator | Dec 1997 |
| 22 | Crimson Resource Management Corp. | | Oil & Gas Operator | Mar 2025 |
| 23 | D. J. Pickrell Operator | | Gas Operator | Dec 2012 |
| 24 | David Radcliff | | Oil & Gas Operator | Dec 2014 |
| 25 | Dekalb Energy Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 1996 |
| 26 | Depco Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2014 |
| 27 | Dos Rios Inc. | | Gas Operator | Apr 2025 |
| 28 | Enerfin Resources Northwest Limited Partnership | | Oil & Gas Operator | Jan 2022 |
| 29 | First Oil And Gas Company | | Oil Operator | Feb 2025 |
| 30 | Freeport-McMoran Oil & Gas LLC | Houston, TX 77002 | Oil & Gas Operator | Mar 2025 |
| 31 | Grayco Energy Explor. Inc. | | Oil & Gas Operator | Dec 2010 |
| 32 | H. O. Strickler Operator | | Oil & Gas Operator | Dec 1993 |
| 33 | H.T. Olsen Oil & Gas Operations | | Oil & Gas Operator | Mar 2025 |
| 34 | Hathaway Company | | Oil & Gas Operator | Feb 2025 |
| 35 | Hilliard Oil & Gas Inc | New Orleans, LA 70112 | Oil & Gas Operator | May 2001 |
| 36 | Holmes Western Oil Corporation | | Oil & Gas Operator | Mar 2025 |
| 37 | Hrubetz Oil Co. | Dallas, TX 75225 | Oil Operator | Sep 1986 |
| 38 | Incremental Oil & Gas USA Holdings Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2021 |
| 39 | James S. Anderson | | Oil & Gas Operator | Feb 2025 |
| 40 | Kaiser Energy Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 1990 |
| 41 | Kelpetro Operating Inc. | | Oil & Gas Operator | Dec 2021 |
| 42 | Kenneth Sperry | | Oil & Gas Operator | Dec 1992 |
| 43 | KLD Energy | | Oil & Gas Operator | Dec 2015 |
| 44 | KMP Operating Inc. | | Oil Operator | Mar 2025 |
| 45 | Lario Oil & Gas Company | Odessa, TX 79762 | Oil & Gas Operator | May 2025 |
| 46 | Leon J. Sabean | | Oil & Gas Operator | Dec 2018 |
| 47 | Longview Production Company | Dallas, TX 75243-3795 | Oil & Gas Operator | Feb 2025 |
| 48 | M. H. Whittier Energy LLC | | Oil & Gas Operator | Sep 1996 |
| 49 | Marlin Pacific Oil & Gas | | Oil & Gas Operator | Dec 2003 |
| 50 | McFarland Energy, Inc. | New Orleans, LA 70160 | Oil & Gas Operator | Dec 2009 |
| 51 | McKean Bros. | | Oil & Gas Operator | Dec 1997 |
| 52 | Mobil Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Jun 2016 |
| 53 | Monument Production Inc. | | Oil & Gas Operator | Dec 2011 |
| 54 | Nahama & Weagant Energy Company | | Oil & Gas Operator | Dec 1997 |
| 55 | Nana Oil & Gas Inc. | | Oil & Gas Operator | Jan 2018 |
| 56 | National Oil Company | Garden City, KS 67846 | Oil & Gas Operator | Jun 2024 |
| 57 | Noble Energy Inc | Midland, TX 79706 | Oil & Gas Operator | May 2025 |
| 58 | Oil Production Management Inc | Squaw Valley, CA 93675-9725 | Oil & Gas Operator | Dec 2002 |
| 59 | Oleksandr Antonyuk | | Oil & Gas Operator | Dec 2018 |
| 60 | Peoco LLC | | Gas Operator | Feb 2025 |
| 61 | Petro Resources, Inc. | Fulton, TX 78358 | Oil & Gas Operator | May 2025 |
| 62 | Petro-Lewis Corp. | | Oil & Gas Operator | Feb 1994 |
| 63 | Petro-Lud Inc. | | Oil & Gas Operator | Mar 2025 |
| 64 | Petrogulf Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 65 | Production Specialties Company | | Oil & Gas Operator | Dec 2003 |
| 66 | Quintana Petroleum Corporation | Denver, CO 80265 | Oil & Gas Operator | Mar 1998 |
| 67 | R&R Resources LLC | | Oil & Gas Operator | Feb 2025 |
| 68 | Reef Ridge Energy Company LLC | | Oil & Gas Operator | Mar 2025 |
| 69 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2025 |
| 70 | Seneca Resources Co LLC | Cranberry Township, PA 16066 | Oil & Gas Operator | Mar 2025 |
| 71 | Sentinel Peak Resources California LLC | | Oil & Gas Operator | Mar 2025 |
| 72 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
| 73 | Sierra Reserve Company | | Oil Operator | Dec 1985 |
| 74 | Silverbacq LLC | | Oil & Gas Operator | Mar 2025 |
| 75 | Solimar Energy LLC | | Oil & Gas Operator | Feb 2025 |
| 76 | Tatum Petroleum Corporation | Zanesville, OH 43702 | Oil & Gas Operator | Dec 2008 |
| 77 | Ted Koble Operator | | Oil & Gas Operator | Nov 2007 |
| 78 | Temblor Petroleum Co. LLC | | Oil & Gas Operator | Feb 2025 |
| 79 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Feb 2025 |
| 80 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
| 81 | The Nahabedian Exploration Group LLC | | Oil & Gas Operator | Feb 2025 |
| 82 | The Termo Company | Long Beach, CA 90801 | Oil & Gas Operator | Mar 2025 |
| 83 | Tiger Oil Company | Dallas, TX 75221 | Oil & Gas Operator | May 2007 |
| 84 | Towne Exploration Company LP | | Oil & Gas Operator | Mar 2025 |
| 85 | Tri-Valley Oil & Gas Co. | | Oil & Gas Operator | Feb 2025 |
| 86 | Trio Petroleum LLC | | Oil & Gas Operator | Feb 2025 |
| 87 | Underground Energy Inc. | | Oil & Gas Operator | Feb 2025 |
| 88 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
| 89 | Valid Energy Company | | Oil & Gas Operator | Feb 2025 |
| 90 | Valley Energy Expl. | | Oil & Gas Operator | Dec 1984 |
| 91 | Vintage Production California LLC | | Oil & Gas Operator | Jun 2016 |
| 92 | West American Energy Corporation | | Oil & Gas Operator | Mar 2025 |
| 93 | West Side Rentals | | Oil & Gas Operator | Feb 2025 |
| 94 | White Knight Production LLC | Lafayette, LA 70505 | Oil & Gas Operator | Feb 2024 |