| 1 | A & A Oil Company | Luling, TX 78648 | Oil & Gas Operator | Oct 2009 |
| 2 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | May 2025 |
| 3 | A & B Oil & Gas Properties Inc | Sapulpa, OK 74067-0217 | Oil & Gas Operator | Apr 2011 |
| 4 | A & H Disposal Inc | Lindsay, OK 73052-0456 | Oil & Gas Operator | Jul 2019 |
| 5 | A & I Properties Inc | Oklahoma City, OK 73107 | Gas Operator | Jun 2007 |
| 6 | A & M Oil Company | Cyril, OK 73029 | Oil & Gas Operator | Apr 2025 |
| 7 | A & T Oil Company | Midland, TX 79707 | Oil & Gas Operator | Sep 2008 |
| 8 | A & T Production Company | Wheat Ridge, CO 80034-1048 | Oil & Gas Operator | Jun 2009 |
| 9 | A & W Operating Inc | Drumright, OK 74030-5789 | Oil & Gas Operator | Mar 2015 |
| 10 | A E W Inc | Okmulgee, OK 74447-0267 | Oil & Gas Operator | Mar 2015 |
| 11 | A H & L Operating Company Inc | Norman, OK 73070-4084 | Oil & Gas Operator | Apr 2015 |
| 12 | A J Acid Inc | Blackwell, OK 74631-0758 | Oil & Gas Operator | Dec 2012 |
| 13 | A J Oil And Gas | Oilton, OK 74052-0112 | Oil & Gas Operator | Jun 2012 |
| 14 | A J S Oil Corporation | Oklahoma City, OK 73112-4799 | Oil & Gas Operator | Jul 2004 |
| 15 | A K Holdings Inc | Scottsdale, AZ 85254 | Oil & Gas Operator | Mar 2011 |
| 16 | A L Jones Revocable Trust | Wilson, OK 73463-7316 | Oil Operator | Jul 2013 |
| 17 | A R W Exploration Corp | Stillwater, OK 74076 | Oil & Gas Operator | May 2013 |
| 18 | A S B Oil & Gas Exploration LLC | Sand Springs, OK 74063-1508 | Oil & Gas Operator | Nov 2021 |
| 19 | A-1 Oil Operators | Beggs, OK 74421-0329 | Oil & Gas Operator | Jan 2013 |
| 20 | A-1 Well Service | Coffeyville, KS 67337-9578 | Oil & Gas Operator | Mar 2021 |
| 21 | A. T. Oil | Bartlesville, OK 74003 | Oil Operator | Mar 1996 |
| 22 | Aaa Oil & Gas Inc | Pauls Valley, OK 73075-0863 | Oil Operator | Mar 2000 |
| 23 | Aaron Arnold B | Sulphur, OK 73086-6853 | Oil & Gas Operator | May 2004 |
| 24 | Aaron Oil Company Inc | Shawnee, OK 74801-2321 | Oil Operator | Oct 2022 |
| 25 | Aaron Well Service Inc | Enid, OK 73703 | Gas Operator | May 2025 |
| 26 | Abarr Trust (The) | Oklahoma City, OK 73179 | Oil & Gas Operator | May 2025 |
| 27 | ABC Oil & Gas | Morris, OK 74445-0273 | Oil & Gas Operator | Mar 2025 |
| 28 | ABC Oil Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2023 |
| 29 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 30 | Aberdeen Petroleum (USA) Inc. | Abilene, TX 79608 | Oil & Gas Operator | Sep 1994 |
| 31 | Ablaze Drilling Company | Garland, TX 75044-2912 | Oil & Gas Operator | Aug 2013 |
| 32 | Abng Inc | Chickasha, OK 73023-0926 | Oil & Gas Operator | Feb 2017 |
| 33 | Abps Energy Inc | Chickasha, OK 73023-1658 | Oil & Gas Operator | Apr 2015 |
| 34 | Abraxas Petroleum Corporation | San Antonio, TX 78259 | Oil & Gas Operator | Jul 2025 |
| 35 | Abraxas Production Corporation | San Antonio, TX 78270 | Oil & Gas Operator | Sep 1999 |
| 36 | Abundance Energy I LLC | Tulsa, OK 74114 | Gas Operator | Apr 2025 |
| 37 | Abundance Energy LLC | Bartlesville, OK 74005-1087 | Oil & Gas Operator | Jul 2018 |
| 38 | Abundance Energy Services LLC | Tulsa, OK 74114 | Gas Operator | May 2025 |
| 39 | Ac Oil & Gas LLC | Hennessey, OK 73742 | Oil & Gas Operator | May 2025 |
| 40 | Ac Operating Company LLC | Houston, TX 77024-2851 | Oil Operator | May 2025 |
| 41 | Acacia Exploration Partners LLC | Oklahoma City, OK 73102-5804 | Oil & Gas Operator | Nov 2021 |
| 42 | Access Petroleum Corporation | | Oil & Gas Operator | Mar 2015 |
| 43 | Acelco Inc | Norman, OK 73070 | Oil & Gas Operator | Oct 1996 |
| 44 | Ackley Earl H & Glenora Trust | Cushing, OK 74023-5230 | Oil & Gas Operator | Mar 2015 |
| 45 | Acoma Oil Corporation | Saint Paul, MN 55102 | Oil & Gas Operator | Jul 2025 |
| 46 | Acott, Melvin E | | Oil Operator | Aug 2014 |
| 47 | Action Petroleum Service Corp | Ardmore, OK 73401 | Oil Operator | Apr 2025 |
| 48 | Ada Energy Exploration And Production LLC | Ada, OK 74820-0867 | Oil Operator | Apr 2025 |
| 49 | Adams Evertte | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 50 | Adams Res & Energy Co | Houston, TX 77001-0844 | Oil & Gas Operator | Mar 2015 |
| 51 | Adams Resources Expl. Corp. | Houston, TX 77001 | Oil & Gas Operator | Apr 2020 |
| 52 | Adeco Energy Corporation | Norman, OK 73071 | Oil & Gas Operator | Apr 2014 |
| 53 | Adkins Jim | Weleetka, OK 74880-8057 | Oil & Gas Operator | Apr 2020 |
| 54 | Admiral Resource Inc | Broken Arrow, OK 74012 | Oil & Gas Operator | Apr 2020 |
| 55 | Adobe Oil & Gas Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 1993 |
| 56 | Adobe Resources Corporation | Midland, TX 79701 | Oil & Gas Operator | Aug 2002 |
| 57 | Adparo LLC | Oklahoma City, OK 73102-4803 | Oil & Gas Operator | May 2025 |
| 58 | Advance Oil Corporation | Kiefer, OK 74041-4105 | Oil & Gas Operator | Apr 2025 |
| 59 | Advent Oil & Operating Inc | Gulfport, MS 39506-7115 | Oil & Gas Operator | Nov 2014 |
| 60 | Adventure Properties Inc | Ada, OK 74820 | Oil & Gas Operator | Apr 2025 |
| 61 | Aei Corporation-Oklahoma | Oklahoma City, OK 73101-1945 | Oil & Gas Operator | Sep 2014 |
| 62 | Aei Production Company | Edmond, OK 73083 | Oil & Gas Operator | Mar 2014 |
| 63 | Aeon Energy Inc | Claremore, OK 74017 | Oil Operator | May 2009 |
| 64 | Aeternum Energy, LLC | Nederland, TX 77627 | Oil & Gas Operator | Jul 2025 |
| 65 | Aethon I LP | Dallas, TX 75206 | Oil & Gas Operator | Mar 2015 |
| 66 | Aexco Petroleum Inc | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 67 | Afo LLC | Velma, OK 73491 | Oil & Gas Operator | Dec 2024 |
| 68 | Agape Inc | Broken Arrow, OK 74011-4256 | Oil & Gas Operator | May 2025 |
| 69 | Agar & Agar Inc | Norman, OK 73070 | Oil & Gas Operator | Oct 1996 |
| 70 | Agate Petroleum, Inc. | Tulsa, OK 74119 | Oil & Gas Operator | Mar 2015 |
| 71 | Agave Energy, Inc | Stigler, OK 74462 | Oil & Gas Operator | Apr 2025 |
| 72 | Agent Oil Corporation | Bison, OK 73720-0116 | Oil & Gas Operator | Mar 2005 |
| 73 | Aggie Oil Company | Lakewood, CO 80226 | Oil & Gas Operator | May 2001 |
| 74 | Agricultural Energy Services Inc | Edmond, OK 73012 | Oil Operator | Apr 2025 |
| 75 | Aguila Operating Company LLC | Edmond, OK 73013 | Oil & Gas Operator | Apr 2025 |
| 76 | Aikman Brothers, LLC | Amarillo, TX 79109 | Oil & Gas Operator | Apr 2025 |
| 77 | Ailey A C | Stroud, OK 74079-9209 | Oil & Gas Operator | Nov 2021 |
| 78 | Ajb Oil LLC | Tulsa, OK 74114-5218 | Oil Operator | Apr 2025 |
| 79 | Aker Oil & Gas Company | Tulsa, OK 74105-2216 | Oil & Gas Operator | Aug 2013 |
| 80 | Akin Jr Verna M & Emsley F | Maud, OK 74854 | Oil & Gas Operator | Apr 2002 |
| 81 | Aladdin Energy, Inc. | Richardson, TX 75080 | Oil & Gas Operator | Feb 1999 |
| 82 | Aladdin Petroleum Corporation | Wichita, KS 67202 | Oil & Gas Operator | Jan 2021 |
| 83 | Alameda Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 1994 |
| 84 | Alamo Resources Inc | Dallas, TX 75229 | Oil & Gas Operator | Dec 2000 |
| 85 | Alamosa Drilling Inc | Dallas, TX 75206-1841 | Oil & Gas Operator | Apr 2024 |
| 86 | Alan Energy Coinc The/Ofb | | Gas Operator | Aug 1991 |
| 87 | Albright Paul D Or Inger J | Okemah, OK 74859-9309 | Oil & Gas Operator | Feb 2025 |
| 88 | Albritton Resources Inc | Dallas, TX 75206 | Oil & Gas Operator | Feb 2001 |
| 89 | Alda Oil & Gas Corporation | Nichols Hill, OK 73116 | Oil & Gas Operator | Jan 2004 |
| 90 | Aleco Production Company | | Oil & Gas Operator | Nov 1997 |
| 91 | Alexander Energy Corporation | Dallas, TX 75206 | Oil & Gas Operator | Apr 2015 |
| 92 | Alexander Oil Co. | Loco, OK 73442-9409 | Oil & Gas Operator | Jun 2025 |
| 93 | Alexander Production Company | San Antonio, TX 78205 | Oil & Gas Operator | Dec 2021 |
| 94 | Alexander, Howard | Tulsa, OK 74114 | Oil & Gas Operator | Feb 1996 |
| 95 | Alexander, Milt M | | Oil Operator | Mar 2015 |
| 96 | Alexander-Loop Oil Prop. Inc. | Tulsa, OK 74105 | Oil & Gas Operator | Nov 1998 |
| 97 | Alford Oil Corporation | Spring, TX 77379 | Oil & Gas Operator | May 2006 |
| 98 | Alford Paul | Ada, OK 74820 | Oil Operator | Jan 2020 |
| 99 | All Exploration LLC | Oklahoma City, OK 73120-7829 | Oil & Gas Operator | Apr 2025 |
| 100 | Allen & Allen Oil Co | | Oil Operator | Dec 2024 |