| 2501 | Grayling Oil Inc | | Oil & Gas Operator | Feb 1995 |
| 2502 | Grayrock Energy, LLC | Nichols Hills, OK 73116-5113 | Oil & Gas Operator | Jan 2025 |
| 2503 | Grayson Operating LLC | Ada, OK 74820 | Oil & Gas Operator | Jan 2025 |
| 2504 | GRB Properties, Inc. | Midland, TX 79705 | Oil & Gas Operator | Mar 2003 |
| 2505 | Great Basins Petroleum Co. | | Gas Operator | Mar 2015 |
| 2506 | Great Horned Owls, LLC | Katy, TX 77494 | Oil & Gas Operator | Jan 2025 |
| 2507 | Great Northern Gas Company | Denver, CO 80293-0602 | Oil & Gas Operator | Jul 2017 |
| 2508 | Great Plains Oil & Gas | Ada, OK 74820-7209 | Oil & Gas Operator | May 2013 |
| 2509 | Great Plains Operating Inc | Bristow, OK 74010 | Oil & Gas Operator | Dec 1998 |
| 2510 | Great Plains Petroleum, Inc. | Snyder, TX 79549 | Oil & Gas Operator | Dec 2024 |
| 2511 | Great Plains Pipeline Company | Tulsa, OK 74135-6405 | Oil & Gas Operator | Jul 2014 |
| 2512 | Great Southwestern Expl Inc | Tulsa, OK 74105 | Oil & Gas Operator | Jan 2025 |
| 2513 | Great Western Drilling Co | Midland, TX 79701 | Oil & Gas Operator | Apr 2025 |
| 2514 | Great Western Equipment Co | Mustang, OK 73064 | Oil & Gas Operator | Jan 2025 |
| 2515 | Great Western Land Co Inc | Tulsa, OK 74136-1517 | Oil & Gas Operator | Jun 2000 |
| 2516 | Great Yellowstone Corp. | | Oil & Gas Operator | Apr 1993 |
| 2517 | Greehey And Company LTD | San Antonio, TX 78216 | Oil & Gas Operator | May 2020 |
| 2518 | Green Energy Company | Okmulgee, OK 74447 | Oil & Gas Operator | May 2013 |
| 2519 | Green Operating Company, Inc. | Tulsa, OK 74135 | Oil & Gas Operator | Dec 2024 |
| 2520 | Green River Exploration Co | Tulsa, OK 74121-1468 | Oil & Gas Operator | Sep 2011 |
| 2521 | Green River Operating Co Inc | Noble, OK 73068-5521 | Oil & Gas Operator | Feb 2018 |
| 2522 | Green River Resources Inc. | Keystone, CO 80435 | Oil & Gas Operator | Apr 2025 |
| 2523 | Green Valley Disposal Serv LLC | Alva, OK 73717 | Oil Operator | Feb 2025 |
| 2524 | Green William G | Jenks, OK 74037-3233 | Oil & Gas Operator | Apr 2020 |
| 2525 | Green'S Drillng & Mud Ser Inc | Konawa, OK 74849 | Oil Operator | Jan 2013 |
| 2526 | Greene David L II LLC | Bartlesville, OK 74005 | Oil Operator | Jan 2025 |
| 2527 | Greenhead Energy Operating LLC | Oklahoma City, OK 73131 | Oil & Gas Operator | Feb 2025 |
| 2528 | Greenlee Oil And Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Jan 2025 |
| 2529 | Greenwood Energy Inc | Oklahoma City, OK 73116-9083 | Oil & Gas Operator | Mar 2015 |
| 2530 | Greenwood Janet | Mannford, OK 74044 | Oil Operator | Apr 2014 |
| 2531 | Greenwood Oil Company | Skiatook, OK 74070 | Oil & Gas Operator | Aug 2013 |
| 2532 | Greer & Beckham Gas Co Inc | Shamrock, TX 79079-0606 | Oil & Gas Operator | Aug 2013 |
| 2533 | Greer Family Trust | Ponca City, OK 74601-8126 | Oil Operator | Aug 2018 |
| 2534 | Greer Tom R | Ponca City, OK 74602-2444 | Oil & Gas Operator | May 2013 |
| 2535 | Greg Davis Investments Inc | Edmond, OK 73034-6621 | Oil Operator | May 2020 |
| 2536 | Greg Hall Oil & Gas LLC | Norman, OK 73072 | Oil & Gas Operator | Jan 2025 |
| 2537 | Greystone Exploration Co | Oklahoma City, OK 73177 | Oil & Gas Operator | Apr 1996 |
| 2538 | Gribble Jr R W | Dallas, TX 75235 | Oil & Gas Operator | Apr 2014 |
| 2539 | Gribble Oil Corporation | Dallas, TX 75235 | Oil Operator | Aug 1994 |
| 2540 | Griebel-Valliquette | Stroud, OK 74079-0231 | Oil & Gas Operator | Aug 2016 |
| 2541 | Griffin Resources LLC | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2025 |
| 2542 | Griffin Well Service Inc | Konawa, OK 74849-9710 | Oil & Gas Operator | Jan 2025 |
| 2543 | Griffith Petroleum Services Inc | Kingston, OK 73439 | Oil & Gas Operator | Jan 2025 |
| 2544 | Griggs Josh | Dewey, OK 74029 | Oil Operator | Jan 2025 |
| 2545 | Griggs Oil LLC | Dewey, OK 74029-0477 | Oil & Gas Operator | Jan 2025 |
| 2546 | Griswold Energy LLC | Oologah, OK 74053-6228 | Oil Operator | Jan 2025 |
| 2547 | Grizzly Operating LLC | Houston, TX 77057 | Oil & Gas Operator | Feb 2025 |
| 2548 | Grooms T D | Stillwater, OK 74075-3600 | Oil & Gas Operator | Oct 2001 |
| 2549 | Gross Jack L Production | Borger, TX 79008-0065 | Gas Operator | Mar 2015 |
| 2550 | Gross, Charles E. | Dallas, TX 75220 | Oil & Gas Operator | Feb 2012 |
| 2551 | Ground Development Company Inc | Dallas, TX 75229-0377 | Oil & Gas Operator | Jan 2013 |
| 2552 | Grubb F W "Forest" | Garber, OK 73738-0186 | Oil & Gas Operator | Jun 2005 |
| 2553 | Grubb Ronald J | Clinton, OK 73601-0906 | Oil & Gas Operator | Aug 2013 |
| 2554 | Gruenerwald WM & Assoc Inc | Colorado Spring, CO 80960-0669 | Oil & Gas Operator | Jan 2002 |
| 2555 | Grynberg Petroleum Company | Greenwood Vge, CO 80111-3326 | Oil & Gas Operator | Oct 2019 |
| 2556 | Guest Petroleum Incorporated | Edmond, OK 73013 | Oil & Gas Operator | Feb 2025 |
| 2557 | Guest R E Oil Producer | Edmond, OK 73083-0805 | Oil & Gas Operator | Mar 2015 |
| 2558 | Gugli Corporation | Byng, OK 74820 | Oil & Gas Operator | Sep 2014 |
| 2559 | Guinn David E | Cleveland, OK 74020 | Oil & Gas Operator | Jan 2025 |
| 2560 | Gulf Coast Fuel Resources LLC | The Woodlands, TX 77380 | Oil Operator | Jan 2022 |
| 2561 | Gulf Exploration, LLC | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2025 |
| 2562 | Gulf Production Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Apr 2015 |
| 2563 | Gulfmark Energy Inc | Houston, TX 77027 | Gas Operator | Apr 2023 |
| 2564 | Gulfport Energy Corporation | Oklahoma City, OK 73134-5003 | Oil & Gas Operator | Jan 2025 |
| 2565 | Gulfport Midcon LLC | Oklahoma City, OK 73114-8132 | Oil & Gas Operator | Feb 2025 |
| 2566 | Gulfstream Petroleum Corp. | | Oil & Gas Operator | Feb 2002 |
| 2567 | Gungoll Carl E Estate | Oklahoma City, OK 73154-0466 | Oil & Gas Operator | Aug 2000 |
| 2568 | Gungoll Henry H. Associates | Enid, OK 73701 | Oil & Gas Operator | Jan 2024 |
| 2569 | Gunkel Charley Wayne Rev Inter VIvos Trust | Schulter, OK 74460-0010 | Gas Operator | Dec 2015 |
| 2570 | Gunsight Energy Inc | Floydada, TX 79235-2521 | Oil Operator | Jun 2009 |
| 2571 | Gunter Jim | Springer, OK 73458 | Oil Operator | Jan 2025 |
| 2572 | GW Petroleum Inc | Houston, TX 77002 | Oil & Gas Operator | Apr 1993 |
| 2573 | Gypsy Exploration LLC | Oklahoma City, OK 73123-1323 | Oil & Gas Operator | Dec 2014 |
| 2574 | Gypsyglenn Oil Company LLC | Tulsa, OK 74119-4809 | Oil & Gas Operator | Feb 2025 |
| 2575 | H & D Operating Company | Refugio, TX 78377 | Oil & Gas Operator | May 2015 |
| 2576 | H & H Drilling Company | Davis, OK 73030-2703 | Oil & Gas Operator | May 2014 |
| 2577 | H & H Energy Inc | Tuttle, OK 73089 | Oil Operator | May 2001 |
| 2578 | H & H Exploration | Tulsa, OK 74132 | Oil & Gas Operator | Jan 2006 |
| 2579 | H & H Oil Productions | Tulsa, OK 74145 | Oil Operator | Jul 1999 |
| 2580 | H & H Operating | Olney, TX 76374 | Oil & Gas Operator | Apr 2025 |
| 2581 | H & H Production | Wichita Falls, TX 76307 | Oil & Gas Operator | Mar 2015 |
| 2582 | H & H Production Company | Muenster, TX 76252 | Oil & Gas Operator | Oct 2005 |
| 2583 | H & H Star Energy Inc | Traverse City, MI 49684 | Oil & Gas Operator | Aug 2016 |
| 2584 | H & K Oil Company | Kilgore, TX 75662 | Oil & Gas Operator | Nov 1998 |
| 2585 | H & L Disposal Wells Inc | Beaver, OK 73932-1195 | Oil Operator | Dec 2012 |
| 2586 | H & L Operating Co LLP | Amarillo, TX 79114 | Oil & Gas Operator | Aug 2022 |
| 2587 | H & L Operating Company | Amarillo, TX 79114 | Oil & Gas Operator | Feb 2020 |
| 2588 | H & M Resources LLC | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 2589 | H & S Oil Company | Kellyville, OK 74039 | Oil & Gas Operator | Mar 1998 |
| 2590 | H & T Brock Oil Company LLC | Comanche, OK 73529-7140 | Oil & Gas Operator | Feb 2024 |
| 2591 | H & W Drilling Inc | Racine, OH 45769 | Oil & Gas Operator | Dec 2023 |
| 2592 | H A Oil & Gas Company | Laverne, OK 73848-0100 | Gas Operator | Mar 2002 |
| 2593 | H B Oil & Gas Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | Jun 2000 |
| 2594 | H E C H Corporation | Ada, OK 74820-9528 | Oil Operator | Sep 2019 |
| 2595 | H G & G Inc | Edmond, OK 73034 | Oil & Gas Operator | Jan 2006 |
| 2596 | H L L Inc | Scottsdale, AZ 85251 | Oil & Gas Operator | Jan 2007 |
| 2597 | H M Xploration Inc | Oklahoma City, OK 73116-7785 | Oil & Gas Operator | Feb 2012 |
| 2598 | H R Collier Collier Oil & Gas | | Oil & Gas Operator | Jan 2025 |
| 2599 | H-Petro-R Inc | Edmond, OK 73013 | Oil & Gas Operator | Dec 2024 |
| 2600 | H.L.S. Energy Co., Inc. | Uvalde, TX 78801 | Oil & Gas Operator | Aug 2003 |