| 1 | 3M Production Inc | Guthrie, OK 73044-1246 | Oil & Gas Operator | Jun 2025 |
| 2 | A & T Oil Company | Midland, TX 79707 | Oil & Gas Operator | Sep 2008 |
| 3 | A & W Operating Inc | Drumright, OK 74030-5789 | Oil & Gas Operator | Mar 2015 |
| 4 | A J Oil And Gas | Oilton, OK 74052-0112 | Oil & Gas Operator | Jun 2012 |
| 5 | A R W Exploration Corp | Stillwater, OK 74076 | Oil & Gas Operator | May 2013 |
| 6 | ABC Oil Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2023 |
| 7 | Ablaze Drilling Company | Garland, TX 75044-2912 | Oil & Gas Operator | Aug 2013 |
| 8 | Ajb Oil LLC | Tulsa, OK 74114-5218 | Oil Operator | Jun 2025 |
| 9 | Allen Michael | Broken Arrow, OK 74014-2239 | Oil & Gas Operator | Apr 2025 |
| 10 | Allied Operating LLC | Bowling Green, KY 42101-3980 | Oil & Gas Operator | Sep 2015 |
| 11 | Allison Energy Holdings LLC | Nichols Hills, OK 73116-5113 | Oil Operator | Jun 2025 |
| 12 | Almac Engineering | Oklahoma City, OK 73116 | Oil & Gas Operator | Jan 2007 |
| 13 | Altman Energy, Inc. | Tulsa, OK 74114 | Oil & Gas Operator | Sep 2025 |
| 14 | Ambrit Energy Corporation | Garland, TX 75044 | Oil & Gas Operator | Jun 2003 |
| 15 | American Energy Recovery Inc | Oklahoma City, OK 73123-0549 | Oil & Gas Operator | Aug 2017 |
| 16 | Amvest Osage Inc | Skiatook, OK 74070-0970 | Oil & Gas Operator | Jun 2025 |
| 17 | Anderson T Maxwell | Tulsa, OK 74136-0653 | Oil & Gas Operator | Dec 2013 |
| 18 | Anstine & Musgrove Inc | Ponca City, OK 74602 | Oil & Gas Operator | Jun 2025 |
| 19 | Aog Operating LLC | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2025 |
| 20 | Apache Energy Resources Corp | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 21 | Aruba Petroleum, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Jun 2025 |
| 22 | Ashlock Thomas J | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2015 |
| 23 | Aspire Exploration LLC | Cleveland, OK 74020-0727 | Oil & Gas Operator | Feb 2015 |
| 24 | Associated Petro Invest Inc | Stillwater, OK 74076-2346 | Oil & Gas Operator | May 2013 |
| 25 | Atteberry Engineering | Edmond, OK 73013-6624 | Oil & Gas Operator | Mar 2008 |
| 26 | Aztec Exploration Inc | Oklahoma City, OK 73143 | Oil & Gas Operator | May 2013 |
| 27 | B & B Operating Company | Odessa, TX 79760 | Oil & Gas Operator | Sep 2025 |
| 28 | B & S Resources LLC | Choctaw, OK 73020 | Oil Operator | Jun 2025 |
| 29 | B B & B Oil Co | Tulsa, OK 74114 | Oil & Gas Operator | Mar 2014 |
| 30 | Barnard, Roy A | Cleveland, OK 74020-4403 | Oil Operator | Jun 2025 |
| 31 | Barta Enterprises | Oklahoma City, OK 73162-1728 | Oil & Gas Operator | Jun 2025 |
| 32 | Baruch-Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 33 | BD Operating LLC | Artesia, NM 88210 | Oil & Gas Operator | Jun 2025 |
| 34 | Beach Operating Company | Tulsa, OK 74136-5577 | Oil & Gas Operator | Mar 2013 |
| 35 | Becca Oil LLC | Cushing, OK 74023-1347 | Oil & Gas Operator | Jun 2025 |
| 36 | Benson Mineral Group Inc | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 37 | Big Four Petroleum Company | Cushing, OK 74023 | Oil & Gas Operator | Nov 2004 |
| 38 | Billy Jack Sharber Operating LLC | Seminole, OK 74868 | Oil & Gas Operator | Jun 2025 |
| 39 | Blackberry Oil Company | Jennings, OK 74038-0068 | Oil & Gas Operator | Dec 2002 |
| 40 | Blackcat Oil Company | Glencoe, OK 74032 | Oil & Gas Operator | Jul 2025 |
| 41 | Blackjack Oil & Gas, Inc. | Hennessey, OK 73742 | Oil & Gas Operator | Sep 2025 |
| 42 | Blair Oil Company | Kingfisher, OK 73750-1213 | Oil & Gas Operator | Jun 2025 |
| 43 | Blake Production Company, Inc. | Oklahoma City, OK 73118 | Oil & Gas Operator | Sep 2025 |
| 44 | Blubaugh Marvin C | Tonkawa, OK 74653-4739 | Oil & Gas Operator | Nov 2014 |
| 45 | Blubaugh Ronald D | Tonkawa, OK 74653-0066 | Oil & Gas Operator | Sep 2014 |
| 46 | Bluehawk Properties Inc | Riverside, CA 92517-1045 | Oil & Gas Operator | Dec 2016 |
| 47 | Bo-MC Operating Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Mar 2018 |
| 48 | Bo-MC Resources Corporation | Enid, OK 73702-1765 | Oil & Gas Operator | Apr 2005 |
| 49 | Bohannon M H | Jennings, OK 74038-0264 | Oil Operator | Mar 2015 |
| 50 | Bronco Petroleum Company | Tulsa, OK 74136 | Oil & Gas Operator | Apr 2014 |
| 51 | Brown & Brown Of Pawnee Inc | Pawnee, OK 74058-9702 | Oil Operator | Jan 2013 |
| 52 | Brown Alan L | Pawhuska, OK 74056 | Oil & Gas Operator | Mar 2025 |
| 53 | Brown Curt Operating Company | Tulsa, OK 74105 | Oil Operator | Nov 1998 |
| 54 | Brown Vernon L & Bonita | Cleveland, OK 74020-4426 | Oil & Gas Operator | Apr 2009 |
| 55 | Bso Inc | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2025 |
| 56 | Bullard Bros Production Co Inc | Comanche, OK 73529-0637 | Oil Operator | Mar 2015 |
| 57 | Buntin Ronnie | Maramec, OK 74045-4500 | Oil & Gas Operator | Sep 2019 |
| 58 | Burchfield Margaret S Dba Nu-Hope Oil Company | Earlsboro, OK 74840 | Oil & Gas Operator | May 2025 |
| 59 | Burk George E | Mannford, OK 74044-0593 | Oil & Gas Operator | Oct 2015 |
| 60 | Buttram Energies Inc | Oklahoma City, OK 73112-7235 | Oil & Gas Operator | Nov 2021 |
| 61 | Buttram Operating Company LLC | Heath, TX 75032-1931 | Oil & Gas Operator | May 2025 |
| 62 | C & L Oil And Gas Corporation | Norman, OK 73069-8224 | Oil & Gas Operator | Jun 2025 |
| 63 | C L & S Oil Company Inc | Perry, OK 73077-0841 | Oil & Gas Operator | Jan 2018 |
| 64 | Camo Oil LLC | Stillwater, OK 74074 | Oil & Gas Operator | Jul 2025 |
| 65 | Candy Oil Production | Sand Springs, OK 74063-3410 | Oil Operator | Feb 2017 |
| 66 | Cardinal Oil LLC | Drumright, OK 74030 | Oil & Gas Operator | Apr 2025 |
| 67 | Carnes Petroleum Corporation | Cleveland, OK 74020 | Oil & Gas Operator | May 2020 |
| 68 | Cartledge & Cartledge Oil Company Inc | Kiefer, OK 74041 | Oil & Gas Operator | Jun 2025 |
| 69 | Casey Musgrove Oil Company Inc | Ponca City, OK 74602 | Oil & Gas Operator | Jun 2025 |
| 70 | Casselman Leases LLC | Morris, OK 74445-2509 | Oil & Gas Operator | Jun 2025 |
| 71 | Castle Exploration Company Inc | Blue Bell, PA 19422 | Oil & Gas Operator | May 2018 |
| 72 | Centennial Resources Inc | Drumright, OK 74030-1234 | Oil & Gas Operator | Dec 2007 |
| 73 | Central Transmission Systems Co | | Oil & Gas Operator | Apr 2015 |
| 74 | Cep Mid-Continent LLC | Skiatook, OK 74070 | Oil & Gas Operator | Jun 2025 |
| 75 | Challenge Operating Inc | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
| 76 | Champlin Exploration, Inc. | Enid, OK 73702 | Oil & Gas Operator | Jul 2025 |
| 77 | Chanse Petroleum Corporation | New York, NY 10165-1134 | Oil & Gas Operator | Feb 2015 |
| 78 | Chevron USA Inc | Midland, TX 79706 | Oil & Gas Operator | Sep 2025 |
| 79 | Chizum Oil LLC | Wichita, KS 67211 | Oil & Gas Operator | Jun 2025 |
| 80 | Cimarron Management Corp | | Oil & Gas Operator | Jul 2020 |
| 81 | Cimarron River Operating Co | Mannford, OK 74044 | Oil & Gas Operator | Jun 2025 |
| 82 | Cimarron Valley Energy Inc | Stillwater, OK 74076 | Oil Operator | Apr 2015 |
| 83 | Circle 9 Resources LLC | Oklahoma City, OK 73104 | Oil & Gas Operator | Jun 2025 |
| 84 | Circle K Oil & Gas Inc | Sand Springs, OK 74063 | Oil & Gas Operator | Jun 2025 |
| 85 | CK Resources | Cleveland, OK 74020-0772 | Oil Operator | Aug 2013 |
| 86 | Claremont Corporation | Tulsa, OK 74114 | Oil & Gas Operator | Feb 2017 |
| 87 | Claremont Exploration Inc | Tulsa, OK 74103-4107 | Oil & Gas Operator | Jun 1997 |
| 88 | Claybrook Production Co. Inc. | Wewoka, OK 74884-1380 | Oil & Gas Operator | Jun 2014 |
| 89 | Cloer VIrgil R | Oklahoma City, OK 73121 | Oil & Gas Operator | Apr 1993 |
| 90 | Cmo LLC | Cleveland, OK 74020 | Oil & Gas Operator | Jun 2025 |
| 91 | CMT Oil & Gas Company Inc | Tulsa, OK 74133-6724 | Oil & Gas Operator | Jun 2025 |
| 92 | CMT Operating LLC | Cleveland, OK 74020-0113 | Oil & Gas Operator | Mar 2015 |
| 93 | CN Operating Company | Drumright, OK 74030 | Oil & Gas Operator | Nov 1998 |
| 94 | Cochran Industrial Corporation | Cushing, OK 74023-1427 | Oil & Gas Operator | Apr 2001 |
| 95 | Colorado Gas Compression Inc | Longmont, CO 80501-5868 | Oil & Gas Operator | Aug 2013 |
| 96 | Colpitt Brothers Oil | Collinsville, OK 74021 | Oil & Gas Operator | Apr 2020 |
| 97 | Concorde Resources Corporation | Eufaula, OK 74432 | Oil & Gas Operator | May 2025 |
| 98 | Conoco Inc. | Houston, TX 77252 | Oil & Gas Operator | Mar 2015 |
| 99 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 100 | Consolidated Peto Equity LTD | La Crescenta, CA 91214 | Oil & Gas Operator | Dec 1996 |