| 5401 | Inland Oil And Gas Company, Inc. | Chireno, TX 75937 | Oil & Gas Operator | Jun 2005 |
| 5402 | Inland Production Company | Vernal, UT 84079 | Oil & Gas Operator | Dec 2004 |
| 5403 | Innoverse Production, LLC | Gainesville, TX 76240 | Oil & Gas Operator | Dec 2025 |
| 5404 | Inpex Eagle Ford, LLC | San Antonio, TX 78216 | Oil & Gas Operator | Dec 2022 |
| 5405 | Inspire Oil And Gas Inc. | Katy, TX 77449 | Oil Operator | Dec 2025 |
| 5406 | Integras Operating, LLC | Irving, TX 75062 | Oil & Gas Operator | Dec 2025 |
| 5407 | Integrated Operating Corporation | Dallas, TX 75243 | Oil & Gas Operator | Dec 2025 |
| 5408 | Intercity Management Corp. | Corpus Chrsti, TX 78412 | Oil & Gas Operator | Dec 2025 |
| 5409 | Intercoast Oil And Gas | Tulsa, OK 74136 | Oil & Gas Operator | Mar 1997 |
| 5410 | Intercoast Oil And Gas Company | Tulsa, OK 74136 | Oil & Gas Operator | Jun 1997 |
| 5411 | Intercoastal Energy, Inc. | Houston, TX 77055 | Oil & Gas Operator | Aug 2003 |
| 5412 | Intergrated Petroleum Corp. | Abilene, TX 79602 | Oil & Gas Operator | Dec 2025 |
| 5413 | Interior Oil Corporation | Derby, KS 67037 | Oil & Gas Operator | Jan 2023 |
| 5414 | International Basic Res., Inc. | Abilene, TX 79604 | Oil & Gas Operator | May 1996 |
| 5415 | International Oil&Gas Consultant | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5416 | International Ventures Inc | Pogasa Springs, CO 81147 | Oil Operator | Jul 1996 |
| 5417 | International Western Oil Corp | Weatherford, TX 76086 | Oil & Gas Operator | Dec 2025 |
| 5418 | Interstate Explorations LLC | Houston, TX 77010 | Oil & Gas Operator | Dec 2025 |
| 5419 | Interstate Production Company, Inc. | Buckhannon, WV 26201-0000 | Oil & Gas Operator | Dec 2021 |
| 5420 | Invoil, Inc. | Oklahoma City, OK 73112 | Oil & Gas Operator | Dec 2025 |
| 5421 | Ip Petroleum Company, Inc. | Houston, TX 77210 | Oil & Gas Operator | Mar 2008 |
| 5422 | Ipact | Austin, TX 78734 | Oil & Gas Operator | Dec 2025 |
| 5423 | Ipr Energy Partners, L.P. | Bowie, TX 76230 | Oil & Gas Operator | Aug 2014 |
| 5424 | Ipr Energy Partners, LLC | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 5425 | Ipr USA Corp. | Irving, TX 75039 | Oil & Gas Operator | Jun 2009 |
| 5426 | Ipt Oil Company | Evansville, IN 47706 | Oil & Gas Operator | Dec 2025 |
| 5427 | Ira Oil & Gas LLC | Addison, TX 75001 | Oil & Gas Operator | Jul 2008 |
| 5428 | Ira Testers | Ira, TX 79527 | Oil & Gas Operator | Mar 2024 |
| 5429 | Ira Testers, LLC | Ira, TX 79527 | Oil Operator | Dec 2025 |
| 5430 | Irion Corporation, The | San Angelo, TX 76906 | Oil & Gas Operator | Jun 2021 |
| 5431 | Irish City Oil & Gas, Inc. | Wimberley, TX 78676 | Oil & Gas Operator | Dec 2025 |
| 5432 | Irish Oil & Gas Co. | Houston, TX 77242 | Oil & Gas Operator | Aug 2003 |
| 5433 | Iron Bell Operating, LLC | Lubbock, TX 79423 | Oil & Gas Operator | Dec 2025 |
| 5434 | Iron Horse Oil & Gas, Inc. | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 5435 | Iron Orchard Operating LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2025 |
| 5436 | Iron Ridge Operating, LLC | Austin, TX 78738 | Oil & Gas Operator | Dec 2025 |
| 5437 | Iron Sights Operating, Inc. | Stillwater, OK 74076 | Oil & Gas Operator | Jul 2022 |
| 5438 | Ironhorse Operations, LLC | Kilgore, TX 75663 | Oil Operator | Dec 2025 |
| 5439 | Ironroc Energy | The Woodlands, TX 77381 | Oil & Gas Operator | Dec 2025 |
| 5440 | Ironwood Oil & Gas LLC | Houston, TX 77067 | Oil & Gas Operator | Jun 2014 |
| 5441 | Irvin Petroleum | Stinnett, TX 79083 | Oil & Gas Operator | Sep 1996 |
| 5442 | Irvin Petroleum Inc. | Stinnett, TX 79083 | Oil & Gas Operator | Apr 2016 |
| 5443 | Irwin-Crum | Nocona, TX 76255 | Oil Operator | Dec 2025 |
| 5444 | Is Energy, LLC | Seminole, TX 79360 | Oil Operator | Dec 2025 |
| 5445 | Isaacson Energy Resources, LLC | Austin, TX 78741 | Oil & Gas Operator | Dec 2025 |
| 5446 | Isbell, Bob G. Operating | Cisco, TX 76437 | Oil & Gas Operator | Mar 2015 |
| 5447 | Iskandia Energy Operating, Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2025 |
| 5448 | Island Exploration | Houston, TX 77058 | Oil & Gas Operator | Dec 2025 |
| 5449 | Isom Energy, Inc. | San Angelo, TX 76904 | Oil & Gas Operator | May 2018 |
| 5450 | It'LL Do Oil Company | Graham, TX 76450 | Oil & Gas Operator | Nov 2024 |
| 5451 | Italian-American Oil Co., Inc. | Tomball, TX 77377 | Oil & Gas Operator | Dec 2025 |
| 5452 | Itech Oil Company | Cypress, TX 77429 | Oil & Gas Operator | Aug 2007 |
| 5453 | Itx Corporation | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 5454 | Itx Pipeline Company, LLC | Dallas, TX 75225 | Oil & Gas Operator | Dec 2025 |
| 5455 | Iv L.C. | San Antonio, TX 78209 | Oil & Gas Operator | Dec 2025 |
| 5456 | Iva Oil | Cisco, TX 76437 | Oil & Gas Operator | Dec 2025 |
| 5457 | Ivory Energy, LLC | Wichita Falls, TX 76307 | Oil & Gas Operator | Dec 2025 |
| 5458 | Iwr Operating, LLC | Dallas, TX 75248 | Oil Operator | Dec 2025 |
| 5459 | Iwt Energy Partners LLC | Denver, CO 80233 | Oil Operator | Dec 2025 |
| 5460 | J & A Oil Company | Odessa, TX 79764 | Oil & Gas Operator | Dec 2025 |
| 5461 | J & A Oil Properties | Olney, TX 76374 | Oil & Gas Operator | Aug 2018 |
| 5462 | J & A Operating | Bowie, TX 76230 | Oil & Gas Operator | Dec 2025 |
| 5463 | J & D Services | Graham, TX 76450 | Oil Operator | Feb 2017 |
| 5464 | J & F Oil Co. | Olney, TX 76374 | Oil & Gas Operator | Dec 2025 |
| 5465 | J & G Enterprise LTD., Co. | Artesia, NM 88211 | Oil & Gas Operator | Nov 1997 |
| 5466 | J & J Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Mar 2015 |
| 5467 | J & J Oil Company LLC | Lubbock, TX 79424 | Oil Operator | Dec 2025 |
| 5468 | J & J Oil Venture | Jacksonville, TX 75766 | Oil & Gas Operator | Aug 1996 |
| 5469 | J & J Oil, Inc. | Breckenridge, TX 76424 | Oil & Gas Operator | Aug 2012 |
| 5470 | J & J Operating | Graford, TX 76449 | Oil & Gas Operator | Dec 2025 |
| 5471 | J & J Services Company | San Angelo, TX 76904 | Oil & Gas Operator | Dec 2025 |
| 5472 | J & J Trading | Abilene, TX 79608 | Oil & Gas Operator | Dec 2004 |
| 5473 | J & J Whiteside Inc. | Comanche, TX 76442 | Oil & Gas Operator | Dec 2025 |
| 5474 | J & K Production LLC | Konawa, OK 74849 | Oil Operator | Sep 2025 |
| 5475 | J & L Partners | Dallas, TX 75370 | Oil & Gas Operator | Dec 2005 |
| 5476 | J & M Co Inc | Abilene, TX 79601 | Oil & Gas Operator | Jan 2016 |
| 5477 | J & M Production | Luling, TX 78648 | Oil & Gas Operator | Nov 2019 |
| 5478 | J & M SWD, LLC | Stamford, TX 79553 | Oil Operator | Dec 2025 |
| 5479 | J & R Producing Co. | Plano, TX 75024 | Oil & Gas Operator | Dec 2012 |
| 5480 | J & S Gas Company | Ranger, TX 76470 | Oil & Gas Operator | Oct 2003 |
| 5481 | J & S Oil Company | Graham, TX 76450 | Oil & Gas Operator | Apr 2022 |
| 5482 | J & S Operating | Shiner, TX 77984 | Oil & Gas Operator | Dec 2002 |
| 5483 | J & TG, LLC | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 5484 | J & W Oil Co.-W. F. | Eastland, TX 76448 | Oil & Gas Operator | Dec 2025 |
| 5485 | J B Energy, Inc. | Denton, TX 76206 | Oil & Gas Operator | Aug 2018 |
| 5486 | J B J Oil Properties, Inc. | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 5487 | J Bar D | Jacksboro, TX 76458 | Oil & Gas Operator | Dec 2025 |
| 5488 | J C Petroleum Inc | Chickasha, OK 73023-1433 | Oil & Gas Operator | Dec 2013 |
| 5489 | J D Sutton Inc | Loco, OK 73442-9701 | Oil & Gas Operator | Sep 2025 |
| 5490 | J G Oil & Gas | Albany, TX 76430 | Oil & Gas Operator | Dec 2025 |
| 5491 | J J Oil & Gas | Abilene, TX 79608 | Oil & Gas Operator | Mar 2008 |
| 5492 | J K Exploration & Production Inc | Fullerton, CA 92832 | Oil & Gas Operator | Dec 2025 |
| 5493 | J L B Operating Co. | Midland, TX 79701 | Oil & Gas Operator | Aug 2000 |
| 5494 | J N R, Inc. | Austin, TX 78732 | Oil & Gas Operator | Aug 2009 |
| 5495 | J Oil & Gas Inc. | San Angelo, TX 76906 | Oil & Gas Operator | Oct 2016 |
| 5496 | J Petroleum, Inc. | San Antonio, TX 78247 | Oil & Gas Operator | Aug 2003 |
| 5497 | J Posey Operating LLC | Dayton, TX 77535 | Oil & Gas Operator | Dec 2025 |
| 5498 | J R Co. Of Muenster, LLC | Muenster, TX 76252 | Oil Operator | Dec 2025 |
| 5499 | J R Investments | Cisco, TX 76437 | Oil & Gas Operator | Aug 2003 |
| 5500 | J Ranger Oil & Gas, LLC | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |