| 2401 | Griffith Petroleum Services Inc | Kingston, OK 73439 | Oil & Gas Operator | Feb 2026 |
| 2402 | Griggs Josh | Dewey, OK 74029 | Oil Operator | Feb 2026 |
| 2403 | Griggs Oil LLC | Dewey, OK 74029-0477 | Oil & Gas Operator | Feb 2026 |
| 2404 | Griswold Energy LLC | Oologah, OK 74053-6228 | Oil Operator | Feb 2026 |
| 2405 | Grizzly Energy Resources, L.L.C. | Midland, TX 79705 | Oil & Gas Operator | Jan 2026 |
| 2406 | Grizzly Operating, LLC | Houston, TX 77057 | Oil & Gas Operator | Jan 2026 |
| 2407 | Grooms T D | Stillwater, OK 74075-3600 | Oil & Gas Operator | Oct 2001 |
| 2408 | Gross, Charles E. | Dallas, TX 75220 | Oil & Gas Operator | Feb 2012 |
| 2409 | Ground Development Company Inc | Dallas, TX 75229-0377 | Oil & Gas Operator | Jan 2013 |
| 2410 | Grubb F W "Forest" | Garber, OK 73738-0186 | Oil & Gas Operator | Jun 2005 |
| 2411 | Grubb Ronald J | Clinton, OK 73601-0906 | Oil & Gas Operator | Aug 2013 |
| 2412 | Gruenerwald WM & Assoc Inc | Colorado Spring, CO 80960-0669 | Oil & Gas Operator | Jan 2002 |
| 2413 | Grynberg Petroleum Company | Greenwood Vge, CO 80111-3326 | Oil & Gas Operator | Oct 2019 |
| 2414 | Guest Petroleum Incorporated | Edmond, OK 73013 | Oil & Gas Operator | Feb 2026 |
| 2415 | Guest R E Oil Producer | Edmond, OK 73083-0805 | Oil & Gas Operator | Mar 2015 |
| 2416 | Gugli Corporation | Byng, OK 74820 | Oil & Gas Operator | Sep 2014 |
| 2417 | Guinn David E | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2026 |
| 2418 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2026 |
| 2419 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 2420 | Gulfport Energy Corporation | Oklahoma City, OK 73114-5003 | Oil & Gas Operator | Jan 2026 |
| 2421 | Gulfport Midcon LLC | Oklahoma City, OK 73114-8132 | Oil & Gas Operator | Feb 2026 |
| 2422 | Gulfstream Petroleum Corp | | Oil & Gas Operator | Feb 2002 |
| 2423 | Gungoll Carl E Estate | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Aug 2000 |
| 2424 | Gungoll Henry H. Associates | Enid, OK 73701 | Oil & Gas Operator | Jun 2025 |
| 2425 | Gunsight Energy Inc | Floydada, TX 79235-2521 | Oil Operator | Jun 2009 |
| 2426 | Gunter Jim | Springer, OK 73458 | Oil Operator | Dec 2025 |
| 2427 | Gunvor USA LLC | Houston, TX 77002 | Oil Operator | Apr 2007 |
| 2428 | Gurley Operating Company | Henryetta, OK 74437 | Oil Operator | Jan 2026 |
| 2429 | GW Investments, LLC | Mustang, OK 73064 | Oil Operator | Dec 2025 |
| 2430 | GW Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1993 |
| 2431 | Gypsy Exploration LLC | Oklahoma City, OK 73123-1323 | Oil & Gas Operator | Dec 2014 |
| 2432 | Gypsyglenn Oil Company LLC | Tulsa, OK 74119-4809 | Oil & Gas Operator | Feb 2026 |
| 2433 | H & D Operating Company | Refugio, TX 78377 | Oil & Gas Operator | May 2015 |
| 2434 | H & H Drilling Company | Davis, OK 73030-2703 | Oil & Gas Operator | May 2014 |
| 2435 | H & H Energy Inc | Tuttle, OK 73089 | Oil Operator | May 2001 |
| 2436 | H & H Exploration | Tulsa, OK 74132 | Oil & Gas Operator | Jan 2006 |
| 2437 | H & H Oil Productions | Tulsa, OK 74145 | Oil Operator | Jul 1999 |
| 2438 | H & H Operating | Olney, TX 76374 | Oil & Gas Operator | May 2026 |
| 2439 | H & H Production | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2015 |
| 2440 | H & H Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2005 |
| 2441 | H & H Star Energy Inc | Traverse City, MI 49684 | Oil & Gas Operator | Aug 2016 |
| 2442 | H & K Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | Nov 1998 |
| 2443 | H & L Operating Co., L.L.P. | Amarillo, TX 79114 | Oil & Gas Operator | Aug 2022 |
| 2444 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 2445 | H & M Resources LLC | Dallas, TX 75225 | Oil & Gas Operator | May 2026 |
| 2446 | H & T Brock Oil Company LLC | Comanche, OK 73529-7140 | Oil & Gas Operator | Feb 2024 |
| 2447 | H & W Drilling Inc | Racine, OH 45769 | Oil & Gas Operator | Dec 2023 |
| 2448 | H B Oil & Gas Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | Jun 2000 |
| 2449 | H E C H Corporation | Ada, OK 74820-9528 | Oil Operator | Sep 2019 |
| 2450 | H G & G Inc | Edmond, OK 73034 | Oil & Gas Operator | Jan 2006 |
| 2451 | H L L Inc | Scottsdale, AZ 85251 | Oil & Gas Operator | Jan 2007 |
| 2452 | H R Collier Collier Oil & Gas | | Oil & Gas Operator | Feb 2026 |
| 2453 | H-Petro-R Inc | Edmond, OK 73013 | Oil & Gas Operator | Jan 2026 |
| 2454 | H.L.S. Energy Co., Inc. | Uvalde, TX 78801 | Oil & Gas Operator | Aug 2003 |
| 2455 | H2ok LLC | Marble Falls, TX 78654 | Oil & Gas Operator | Feb 2026 |
| 2456 | H2ox Operating LLC | Tulsa, OK 74103 | Oil Operator | Jan 2026 |
| 2457 | Haas Petroleum LLC | Prairie VIllage, KS 66208 | Oil Operator | Jan 2026 |
| 2458 | Hadaway Consulting And Engineering LLC | Canadian, TX 79014 | Oil & Gas Operator | Feb 2026 |
| 2459 | Hadaway Engineering Inc | Canadian, TX 79014 | Oil & Gas Operator | Jul 2015 |
| 2460 | Hadco LTD | Ardmore, OK 73401-6929 | Oil & Gas Operator | Mar 2015 |
| 2461 | Haddox Johnny C | Okemah, OK 74859-0254 | Oil Operator | Apr 2020 |
| 2462 | Hadson Petro USA Inc | | Oil & Gas Operator | Nov 2016 |
| 2463 | Hadson Petroleum Corporation | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2015 |
| 2464 | Hagler William N | Farmington, NM 87499-0035 | Oil Operator | Apr 2014 |
| 2465 | Hail Petroleum Corporation | Garland, TX 75047-5036 | Oil Operator | Mar 1997 |
| 2466 | Haines Oil Company | Sulphur, OK 73086 | Oil & Gas Operator | Oct 2009 |
| 2467 | Halcon Holdings Inc | Ada, OK 74820 | Oil & Gas Operator | Jan 2026 |
| 2468 | Halcyon Natural Gas LLC | Oklahoma City, OK 73116-9111 | Oil & Gas Operator | Nov 2025 |
| 2469 | Hale John H | Tulsa, OK 74107 | Oil & Gas Operator | Mar 2000 |
| 2470 | Halfway Oil Inc | Tahlequah, OK 74464-5448 | Oil & Gas Operator | Aug 2013 |
| 2471 | Halgas Inc | Tulsa, OK 74101-3012 | Oil & Gas Operator | May 2013 |
| 2472 | Hall And Kelley Oil & Gas | | Oil Operator | Dec 1995 |
| 2473 | Hall Edward L | Ada, OK 74820-3321 | Oil & Gas Operator | Dec 2025 |
| 2474 | Hall Energy Company LLC | Oklahoma City, OK 73120-5020 | Oil & Gas Operator | Jul 2022 |
| 2475 | Hall Exploration, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Feb 2026 |
| 2476 | Hall Resources Corporation | Independence, MO 64057-2158 | Oil & Gas Operator | Jun 2016 |
| 2477 | Hallco Petroleum Inc | Oklahoma City, OK 73106-5224 | Oil Operator | Aug 2018 |
| 2478 | Halliburton Oil Producing Co. | Duncan, OK 73534 | Oil & Gas Operator | Apr 2016 |
| 2479 | Hallmark Resources, Inc | Stilwell, OK 74960-0312 | Oil & Gas Operator | Sep 2020 |
| 2480 | Hallum Construction Inc | Seminole, OK 74868-2427 | Oil & Gas Operator | Sep 2014 |
| 2481 | Hallum Lee Leverett | Marietta, OK 73448 | Oil Operator | Jan 2026 |
| 2482 | Hallwood Petroleum, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jan 2026 |
| 2483 | Ham Oil Company, LLC | | Oil Operator | Sep 2022 |
| 2484 | Hamil Oil & Gas LLC | Kingfisher, OK 73750-6500 | Oil & Gas Operator | Feb 2026 |
| 2485 | Hamilton B J | Ada, OK 74820-9404 | Oil & Gas Operator | Sep 1999 |
| 2486 | Hamilton Brothers Oil Co. | Houston, TX 77057 | Oil & Gas Operator | Mar 2015 |
| 2487 | Hamilton K M Oil & Gas Co | Ada, OK 74820 | Oil Operator | Jan 2013 |
| 2488 | Hammer Oil Properties Inc | Enid, OK 73706-0144 | Oil & Gas Operator | Oct 2017 |
| 2489 | Hammer Ranch | Elmore City, OK 73433 | Oil & Gas Operator | Jan 2023 |
| 2490 | Hamon Jake L | Dallas, TX 75201-3902 | Oil & Gas Operator | Nov 1997 |
| 2491 | Hamon Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Dec 2011 |
| 2492 | Hamp Oil | Ponca City, OK 74604 | Oil & Gas Operator | Sep 2002 |
| 2493 | Hampton Corporation (The) | Norman, OK 73069-5910 | Oil Operator | Jun 2016 |
| 2494 | Hancock Leon | Kingston, OK 73439-9618 | Oil Operator | Dec 2014 |
| 2495 | Hanna Oil And Gas Company | Fort Smith, AR 72901 | Oil & Gas Operator | Jan 2026 |
| 2496 | Hanoco Inc | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2025 |
| 2497 | Hanover Operating Company | Tulsa, OK 74101 | Oil & Gas Operator | Dec 1998 |
| 2498 | Hansen Noel | Avant, OK 74001 | Oil Operator | Aug 2013 |
| 2499 | Happy Hill Operating LLC | Guthrie, OK 73044-7361 | Oil & Gas Operator | Oct 2017 |
| 2500 | Har Ken Oil Company | | Oil & Gas Operator | Dec 2021 |