| 1 | A & A Tank Truck Company | Norman, OK 73070-8969 | Oil & Gas Operator | Jun 2025 |
| 2 | Abercrombie, A. L., Inc | Wichita, KS 67202 | Oil & Gas Operator | Jan 2025 |
| 3 | Abng Inc | Chickasha, OK 73023-0926 | Oil & Gas Operator | Feb 2017 |
| 4 | Aker Oil & Gas Company | Tulsa, OK 74105-2216 | Oil & Gas Operator | Aug 2013 |
| 5 | Allied Petroleum Inc. | Oklahoma City, OK 73116-1516 | Oil & Gas Operator | Jun 2014 |
| 6 | Anson Company | Oklahoma City, OK 73124 | Oil & Gas Operator | Apr 2018 |
| 7 | Apache Corporation | Houston, TX 77042 | Oil & Gas Operator | Sep 2025 |
| 8 | Apache Energy Resources Corp | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 9 | Apexco, Inc. | Sand Springs, OK 74063 | Oil & Gas Operator | Mar 2025 |
| 10 | Arbuckle Enterprises, Inc. | Edmond, OK 73083 | Oil & Gas Operator | May 2025 |
| 11 | Avalon Exploration Inc | Tulsa, OK 74119-5401 | Oil & Gas Operator | Dec 2019 |
| 12 | Aven Gas & Oil Inc | Oklahoma City, OK 73113-0491 | Oil & Gas Operator | Nov 2021 |
| 13 | B & B Tool Company Inc | Lindsay, OK 73052 | Oil & Gas Operator | May 2025 |
| 14 | B & W Operating, L.L.C. | Nichols Hill, OK 73116 | Oil & Gas Operator | Jun 2025 |
| 15 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Sep 2025 |
| 16 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Jul 2025 |
| 17 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 18 | Bison Exploration Drilling 1 LP | Dallas, TX 75205-3483 | Oil & Gas Operator | Nov 2015 |
| 19 | Blue Bison Operating LLC | Chickasha, OK 73018 | Oil & Gas Operator | May 2025 |
| 20 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | May 2025 |
| 21 | Bomber Energy LLC | Comanche, OK 73529 | Oil & Gas Operator | May 2025 |
| 22 | Bostex Operating Company | Nocona, TX 76255 | Oil Operator | Jun 2025 |
| 23 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | May 2025 |
| 24 | Brammer Petroleum, Inc. | Gainesville, TX 76241 | Oil & Gas Operator | Sep 2025 |
| 25 | Breck Operating Corp. | Breckenridge, TX 76424 | Oil & Gas Operator | May 2025 |
| 26 | Brenneis Energy | Duncan, OK 73533-5415 | Oil & Gas Operator | Mar 2025 |
| 27 | Brenneis Oil Company | Norman, OK 73072-3963 | Oil & Gas Operator | Aug 2012 |
| 28 | Brown L C Company | Ada, OK 74820-7916 | Oil & Gas Operator | Nov 2021 |
| 29 | Bruce Weldon | Lawton, OK 73501-5707 | Oil & Gas Operator | Mar 2000 |
| 30 | Bud Oil, Inc. | Duncan, OK 73534 | Oil & Gas Operator | Sep 2025 |
| 31 | Burleson Production LLC | Frederick, OK 73542 | Oil Operator | May 2025 |
| 32 | C & R Petroleum Co. | Duncan, OK 73533-1341 | Oil & Gas Operator | Jun 2025 |
| 33 | C.D. Operating Company, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | Apr 2015 |
| 34 | Canaan Energy Corporation | Oklahoma City, OK 73154-8806 | Oil & Gas Operator | Mar 2015 |
| 35 | Canvas Energy LLC | Oklahoma City, OK 73142-1839 | Oil & Gas Operator | Jun 2025 |
| 36 | Carlson Petroleum Company | Houston, TX 77010 | Oil & Gas Operator | Mar 2015 |
| 37 | Cemoil Inc | Cement, OK 73017-0563 | Oil & Gas Operator | Jun 2025 |
| 38 | Chaco Energy Company | Denver, CO 80201 | Oil & Gas Operator | Jul 2025 |
| 39 | Chesapeake Operating LLC | Oklahoma City, OK 73154 | Oil & Gas Operator | Sep 2025 |
| 40 | Cheyenne Petroleum Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Sep 2025 |
| 41 | Choctaw Gas Company | Quinton, OK 74561 | Gas Operator | May 2025 |
| 42 | Cibola Energy Corporation | Albuquerque, NM 87103 | Oil & Gas Operator | Oct 2017 |
| 43 | Clark And Clark | Princeton, NJ 08540-1930 | Oil & Gas Operator | Jul 2013 |
| 44 | Clift Cary E | Chickasha, OK 73018-6305 | Oil & Gas Operator | Sep 2024 |
| 45 | Coho Oil & Gas Inc | Coppell, TX 75019-8288 | Oil & Gas Operator | Mar 2015 |
| 46 | Columbia Production Company | Edmond, OK 73083 | Oil & Gas Operator | May 2020 |
| 47 | Comanche Exploration Co LLC | Oklahoma City, OK 73116-7334 | Oil & Gas Operator | Jun 2025 |
| 48 | Comanche Exploration Company | Oklahoma City, OK 73120-2797 | Oil & Gas Operator | Feb 2007 |
| 49 | Combined Resources Corporation | Edmond, OK 73083 | Oil & Gas Operator | Sep 2025 |
| 50 | Comet Oil Company | Velma, OK 73091 | Oil & Gas Operator | May 2005 |
| 51 | Comet-Haines Oil Company | Sulphur, OK 73086-0546 | Oil & Gas Operator | Mar 2013 |
| 52 | Compadre Drilling & Expl Corp | Ardmore, OK 73402 | Oil & Gas Operator | Mar 2015 |
| 53 | ConocoPhillips Company | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 54 | Cook W R Inc | Duncan, OK 73534-0069 | Oil & Gas Operator | Jun 2000 |
| 55 | Couch Donald W | Marlow, OK 73055 | Oil & Gas Operator | May 2025 |
| 56 | Crawley Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 57 | Crown Petroleum Company | Duncan, OK 73534-0938 | Oil & Gas Operator | Jan 2011 |
| 58 | Crumpton H A | Duncan, OK 73533 | Oil Operator | Dec 2002 |
| 59 | D & D Drilling | Kingston, OK 73439-9549 | Oil & Gas Operator | May 2000 |
| 60 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 61 | Daube Company The | Ardmore, OK 73401 | Oil & Gas Operator | Jul 2025 |
| 62 | Daylight Petroleum LLC | Houston, TX 77052 | Oil & Gas Operator | Sep 2025 |
| 63 | DCP Operating Co LP | Houston, TX 77042 | Oil & Gas Operator | May 2025 |
| 64 | Devon Energy Corp (Nevada) | Oklahoma City, OK 73102 | Oil & Gas Operator | Feb 2017 |
| 65 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Sep 2025 |
| 66 | Dominion Exp Midcontinent Inc | Oklahoma City, OK 73134-2616 | Oil & Gas Operator | Oct 2024 |
| 67 | Dominion Ok TX E & P Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Nov 2018 |
| 68 | Dorchester Resources LP | Oklahoma City, OK 73154-8879 | Oil & Gas Operator | Aug 2021 |
| 69 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 70 | E4 Production LLC | Comanche, OK 73529 | Oil Operator | May 2025 |
| 71 | Edinger Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2007 |
| 72 | El Pache Energy Inc | Duncan, OK 73533 | Oil & Gas Operator | Aug 2017 |
| 73 | El Paso Production Company | Houston, TX 77002 | Oil & Gas Operator | Mar 2016 |
| 74 | Elgin Construction Company Inc | Elgin, OK 73538-0370 | Oil Operator | Apr 2025 |
| 75 | Elite Tank Trucks, Inc | | Oil & Gas Operator | Jun 2025 |
| 76 | Energas Corporation | Oklahoma City, OK 73105 | Oil & Gas Operator | Feb 2025 |
| 77 | Energy Operating Corporation | Plano, TX 75093-4409 | Oil & Gas Operator | Sep 2013 |
| 78 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Sep 2025 |
| 79 | EOG Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Sep 2025 |
| 80 | Excelco Energy Inc. | Kingwood, TX 77339 | Oil & Gas Operator | Jul 2018 |
| 81 | Exok, Inc. | Oklahoma City, OK 73116 | Oil & Gas Operator | May 2025 |
| 82 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Jun 2025 |
| 83 | Fairway Resources Operating III LLC | Houston, TX 77002-2728 | Oil & Gas Operator | May 2025 |
| 84 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Jun 2025 |
| 85 | Flanagan Energy Company LLC | Walters, OK 73572 | Oil Operator | Feb 2025 |
| 86 | Focus Energy, Inc. | Oklahoma City, OK 73154 | Oil & Gas Operator | Nov 2019 |
| 87 | Fpco Oil & Gas Co. | New Orleans, LA 70160 | Oil & Gas Operator | Apr 2025 |
| 88 | French Oil Inc | Lawton, OK 73501-9454 | Oil & Gas Operator | May 2025 |
| 89 | Ge Oil & Gas LLC | Hastings, OK 73548-4904 | Oil & Gas Operator | Jan 2025 |
| 90 | Geo Engineering, Inc. | Houston, TX 77027 | Oil & Gas Operator | Jun 2009 |
| 91 | Gibson H F Estate | Dallas, TX 75250 | Oil & Gas Operator | Jul 1995 |
| 92 | Graham Royalty LTD | Covington, LA 70434 | Oil & Gas Operator | Jul 2007 |
| 93 | Gray Pipeline Inc | Broomfield, CO 80023-8304 | Oil & Gas Operator | Jul 2018 |
| 94 | GRB Properties, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2003 |
| 95 | H & H Energy Inc | Tuttle, OK 73089 | Oil Operator | May 2001 |
| 96 | H & T Brock Oil Company LLC | Comanche, OK 73529-7140 | Oil & Gas Operator | Feb 2024 |
| 97 | Hadson Petro USA Inc | | Oil & Gas Operator | Nov 2016 |
| 98 | Hadson Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 99 | Haines Oil Company | Sulphur, OK 73086 | Oil & Gas Operator | Oct 2009 |
| 100 | Harrell Verlan W | Oklahoma City, OK 73102-7201 | Oil & Gas Operator | Nov 1999 |