| 3301 | E R Operating Company | Dallas, TX 75225 | Oil & Gas Operator | Jan 2025 |
| 3302 | E W D Oil | Winters, TX 79567 | Oil & Gas Operator | Mar 2025 |
| 3303 | E&B Natural Resources MGT Corp | Bakersfield, CA 93308 | Oil & Gas Operator | Aug 2017 |
| 3304 | E-Cor, Inc. | Austin, TX 78734 | Gas Operator | Feb 1999 |
| 3305 | E-L Gas Co., LTD. | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2001 |
| 3306 | E-P Oil Co. Inc. | Luling, TX 78648 | Oil & Gas Operator | Mar 2025 |
| 3307 | E. & H. Oil Company | Woodson, TX 76491 | Oil & Gas Operator | May 1998 |
| 3308 | E. T. Oil Company | Luling, TX 78648 | Oil & Gas Operator | Mar 2025 |
| 3309 | E. T. S. Enterprises, Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Jul 1996 |
| 3310 | E.A.T.E. Operating | Natalia, TX 78059 | Oil & Gas Operator | Mar 2025 |
| 3311 | E.C. Hindman Oil And Gas | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 3312 | E.C. Production, L.L.C. | Rosenberg, TX 77471 | Oil & Gas Operator | Mar 2025 |
| 3313 | E.G. Operating | Dallas, TX 75206 | Oil & Gas Operator | Mar 2008 |
| 3314 | E.G.L. Resources, Inc. | Midland, TX 79702 | Oil & Gas Operator | Dec 2024 |
| 3315 | E/T Petroleum Co. | Big Lake, TX 76932 | Oil & Gas Operator | Aug 2014 |
| 3316 | E2 Operating LLC | Tulsa, OK 74135 | Oil & Gas Operator | Mar 2025 |
| 3317 | Eaa Operating, LLC | Perryton, TX 79070 | Oil & Gas Operator | Mar 2025 |
| 3318 | Eado Production, Inc. | Kermit, TX 79745 | Oil & Gas Operator | Aug 2012 |
| 3319 | Eagle Capital Partners, LLC | Eunice, NM 88231 | Oil & Gas Operator | Mar 2025 |
| 3320 | Eagle Energy | Midland, TX 79710 | Oil & Gas Operator | Sep 1999 |
| 3321 | Eagle Energy Acquisitions LP | Houston, TX 77002 | Oil & Gas Operator | Aug 2014 |
| 3322 | Eagle Energy Development Co | La Porte, TX 77571 | Oil & Gas Operator | Dec 2024 |
| 3323 | Eagle Energy Resources, LLC | La Porte, TX 77571 | Oil & Gas Operator | Mar 2025 |
| 3324 | Eagle Exploration Co., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2019 |
| 3325 | Eagle Ford Hunter Resources,Inc. | Houston, TX 77024 | Oil & Gas Operator | Apr 2013 |
| 3326 | Eagle Ford Oil Co., Inc. | Houston, TX 77057 | Oil & Gas Operator | Mar 2025 |
| 3327 | Eagle Hydrocarbons (Texas) Inc. | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
| 3328 | Eagle Hydrocarbons Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 2020 |
| 3329 | Eagle Natural Resources, LLC | Eunice, NM 88231 | Oil Operator | Mar 2025 |
| 3330 | Eagle Oil & Gas Co. | Dallas, TX 75225 | Oil & Gas Operator | Mar 2025 |
| 3331 | Eagle Oil Management, LLC | Shreveport, LA 71106 | Oil & Gas Operator | Mar 2025 |
| 3332 | Eagle Operating | Midland, TX 79707 | Oil & Gas Operator | May 2013 |
| 3333 | Eagle Petroleum Corporation | Holliday, TX 76366 | Oil & Gas Operator | Oct 2005 |
| 3334 | Eagle Production, Inc. | Abilene, TX 79605 | Oil & Gas Operator | Mar 2025 |
| 3335 | Eagle River Energy Corporation | Broken Arrow, OK 74011 | Oil & Gas Operator | Dec 2024 |
| 3336 | Eagle Rock Mid-Continent Op, LLC | Houston, TX 77252 | Oil & Gas Operator | Sep 2015 |
| 3337 | Eagle Rock Operating Company,LLC | Houston, TX 77252 | Oil & Gas Operator | Oct 2015 |
| 3338 | Eagle Valley Development LLC | Austin, TX 78738 | Oil & Gas Operator | Oct 2023 |
| 3339 | Eagleridge Operating, LLC | Dallas, TX 75219 | Oil & Gas Operator | Mar 2025 |
| 3340 | Eakin Brothers | Pampa, TX 79065 | Gas Operator | Mar 2025 |
| 3341 | Earnest Producing Corporation | Midland, TX 79704 | Oil & Gas Operator | Mar 2025 |
| 3342 | Earth Science Exploration, Inc. | Wichita Falls, TX 76307 | Oil & Gas Operator | Nov 2012 |
| 3343 | Earthbound Energy LLC | Merkel, TX 79536 | Oil Operator | Mar 2025 |
| 3344 | Earthbound Resources LLC | Merkel, TX 79536 | Oil & Gas Operator | Mar 2025 |
| 3345 | Earthstone Energy, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Dec 2017 |
| 3346 | Earthstone Operating, LLC | The Woodlands, TX 77380 | Oil & Gas Operator | Jan 2025 |
| 3347 | Eason Production Company | Atlanta, TX 75551 | Oil & Gas Operator | May 2007 |
| 3348 | East Texas Crude Oil Corporation | Tyler, TX 75701 | Oil & Gas Operator | Jun 1994 |
| 3349 | East Texas Exploration, LLC | Edmond, OK 73003 | Oil & Gas Operator | Sep 2019 |
| 3350 | East Texas Production MGT. Inc | Athens, TX 75751 | Oil & Gas Operator | Mar 2025 |
| 3351 | Eastco Gas Co. | Midland, TX 79707 | Oil & Gas Operator | Oct 1999 |
| 3352 | Eastern Energy Corporation | Bowling Green, KY 42104 | Oil & Gas Operator | Dec 2013 |
| 3353 | Eastern Oil Corporation | Houston, TX 77070 | Oil & Gas Operator | Mar 2025 |
| 3354 | Eastern Petroleum Company | Girard, OH 44420 | Oil & Gas Operator | Sep 1995 |
| 3355 | Eastex Gas Production Co. | Houston, TX 77042 | Oil & Gas Operator | Aug 1996 |
| 3356 | Eastex Operating, Inc. | Tyler, TX 75701 | Oil & Gas Operator | Jun 2003 |
| 3357 | Eastland Exploration, Inc. | Austin, TX 78763 | Oil & Gas Operator | Apr 1997 |
| 3358 | Eastland Oil Company, The | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 3359 | Eastland Operating, L.L.C. | Ranger, TX 76470 | Oil & Gas Operator | Mar 2025 |
| 3360 | Ebs Oil & Gas Partners Op.Co.,LP | Dallas, TX 75219 | Oil & Gas Operator | May 2006 |
| 3361 | Ec Stryker Inc | Decatur, TX 76234 | Oil & Gas Operator | Dec 2015 |
| 3362 | Eca Holdings, L.P. | Sugar Land, TX 77478 | Oil & Gas Operator | Mar 2010 |
| 3363 | Ecapa Energy Company | Holliday, TX 76366 | Oil Operator | Mar 2025 |
| 3364 | Ecc Energy Corporation | Dewey, OK 74029 | Oil & Gas Operator | Feb 2020 |
| 3365 | Ech Production LLC | Abilene, TX 79608 | Oil Operator | Mar 2025 |
| 3366 | Echo Production Inc | Graham, TX 76450 | Oil & Gas Operator | Mar 2025 |
| 3367 | Echols & Gray Bros. | Snyder, TX 79549 | Oil & Gas Operator | Jul 2003 |
| 3368 | Echols Oil Company | Caddo, TX 76429 | Oil & Gas Operator | Jan 2012 |
| 3369 | Echols Oil Company, L.L.C. | Caddo, TX 76429 | Oil & Gas Operator | Mar 2025 |
| 3370 | Eck Petroleum LLC | Kingman, KS 67068 | Oil Operator | Nov 2019 |
| 3371 | Eclipse Oil & Gas, Inc. | Midland, TX 79703 | Oil & Gas Operator | Mar 2025 |
| 3372 | Eclipse Petroleum Corporation | La Grange, TX 78945 | Oil & Gas Operator | Aug 2003 |
| 3373 | Eclipse Services, Inc. * | La Grange, TX 78945 | Oil & Gas Operator | Jul 2003 |
| 3374 | Ecoserv Environmental SVCS, LLC | Abbeville, LA 70510 | Oil Operator | Mar 2025 |
| 3375 | Edco Energy, Inc. | Austin, TX 78738 | Oil & Gas Operator | May 2003 |
| 3376 | Edco Petroleum, Inc. | Dallas, TX 75202 | Oil & Gas Operator | Mar 2005 |
| 3377 | Eddie'S Royalties, Inc. | Rising Star, TX 76471 | Oil & Gas Operator | Mar 2025 |
| 3378 | Eddleman, M. W. | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2000 |
| 3379 | Edf Trading Resources, LLC | Austin, TX 78746 | Oil & Gas Operator | Jul 2015 |
| 3380 | Edgar, Verlon | Belle Chasse, LA 70037 | Oil & Gas Operator | Feb 1998 |
| 3381 | Edge Barnett Operating Comp LLC | Fort Worth, TX 76107 | Gas Operator | Nov 2013 |
| 3382 | Edge Exploration, Inc. | Graham, TX 76450 | Oil & Gas Operator | Mar 2006 |
| 3383 | Edge Oil & Gas Properties | Archer City, TX 76351 | Oil & Gas Operator | Mar 2025 |
| 3384 | Edge Oil And Gas, LLC | Abilene, TX 79602 | Oil Operator | Mar 2025 |
| 3385 | Edge Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Jun 1999 |
| 3386 | Edge Petroleum Oper. Co., Inc. | Houston, TX 77042 | Oil & Gas Operator | Nov 2010 |
| 3387 | Edge Resources Operating, L.L.C. | Fort Worth, TX 76107 | Gas Operator | Jan 2020 |
| 3388 | Edge, Fred Well Service Co. | Archer City, TX 76351 | Oil & Gas Operator | May 2024 |
| 3389 | Edinburgh Energy Partners, LLC | Midland, TX 79707 | Oil & Gas Operator | Mar 2025 |
| 3390 | Edinger Engineering, Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jan 2025 |
| 3391 | Edinger Inc. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2007 |
| 3392 | Edington Oil Company | Albany, TX 76430 | Oil & Gas Operator | Aug 2006 |
| 3393 | Edisto Resources Corp | Houston, TX 77057 | Oil & Gas Operator | Oct 1999 |
| 3394 | Edmar Company, L.L.C. | Midland, TX 79702 | Oil & Gas Operator | Feb 2020 |
| 3395 | Edmonds Management Company | Richardson, TX 75081 | Oil & Gas Operator | Mar 2015 |
| 3396 | Edmonds, Karl F. Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Feb 2005 |
| 3397 | Edmondson Oil & Gas | Ballinger, TX 76821 | Oil & Gas Operator | Mar 2025 |
| 3398 | Edp Management Company | Houston, TX 77056 | Oil & Gas Operator | Jul 2018 |
| 3399 | Edward Oil Company | Youngsville, PA 16371 | Oil & Gas Operator | Nov 2024 |
| 3400 | Edwards & Leach Oil Company | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2005 |