401 | Eason Oil Company | Oklahoma City, OK 73112 | Oil & Gas Operator | Mar 2012 |
402 | Eastern American Energy Corp | | Oil & Gas Operator | Dec 2008 |
403 | Eberspecher Drilling Inc | Casper, WY 82601 | Oil & Gas Operator | Dec 2000 |
404 | Eblen Frank Syndicate Inc | Atlantic, IA 50022 | Oil & Gas Operator | Jul 2014 |
405 | Edge Energy II LLC | Golden, CO 80401 | Oil & Gas Operator | Mar 2024 |
406 | Eex Corporation | Houston, TX 77060 | Oil & Gas Operator | Feb 2000 |
407 | El Paso Natural Gas Company | El Paso, TX 79978 | Oil & Gas Operator | Apr 2013 |
408 | El Paso Production Oil & Gas Co. | Houston, TX 77252 | Oil & Gas Operator | Apr 2024 |
409 | Eland Energy Inc | Dallas, TX 75248 | Oil & Gas Operator | Jan 2024 |
410 | Elephant Operating LLC | Dallas, TX 75204 | Oil & Gas Operator | Feb 2024 |
411 | Elf Aquitaine Inc | Houston, TX 77002 | Oil & Gas Operator | May 1991 |
412 | Elk Energy Corporation | Denver, CO 80218 | Oil & Gas Operator | Mar 2008 |
413 | Elk Petroleum Inc | Casper, WY 82601 | Oil & Gas Operator | Aug 2014 |
414 | Ellbogen John P LTD | Casper, WY 82602 | Oil & Gas Operator | Feb 2024 |
415 | Ellwood Exploration LLC | San Antonio, TX 78217 | Oil Operator | Jan 2024 |
416 | Emc Energies Inc | Casper, WY 82604 | Oil Operator | May 1989 |
417 | Emc Energy | | Oil & Gas Operator | Jun 1985 |
418 | Eme Wyoming LLC | Lakewood, CO 80401 | Oil & Gas Operator | Feb 2024 |
419 | Emerald Operating Company | Plano, TX 75075 | Oil & Gas Operator | Feb 2024 |
420 | Emerald Restoration & Prod | Gillette, WY 82718 | Oil & Gas Operator | Jul 2000 |
421 | Empire Petroleum Corporation | Tulsa, OK 74137 | Oil & Gas Operator | Dec 2005 |
422 | Emre Oil LLC | Moorcroft, WY 82721 | Oil Operator | Feb 2024 |
423 | Encana Energy Resources Inc | Denver, CO 80202-2828 | Oil & Gas Operator | Jan 2021 |
424 | Encore Operating LP | Plano, TX 75024 | Oil & Gas Operator | Jan 2024 |
425 | Endeavor Energy LLC | | Oil Operator | Sep 2023 |
426 | Endeavor Energy Resources, LP | Midland, TX 79701 | Oil & Gas Operator | Apr 2024 |
427 | Enduro Operating LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2018 |
428 | Enerex Limited Liability Co | Craig, CO 81625 | Oil & Gas Operator | Dec 2023 |
429 | Energas Corporation | Oklahoma City, OK 73105-6422 | Oil & Gas Operator | Dec 2023 |
430 | Energen Resources Maq Inc | Birmingham, AL 35203 | Oil & Gas Operator | Sep 2000 |
431 | Energetics Inc | Englewood, CO 80155 | Oil & Gas Operator | Aug 1985 |
432 | Energy Equity Company | Columbus, MT 59019 | Oil & Gas Operator | Jan 2024 |
433 | Energy Operating Company Inc | Lakewood, CO 80235 | Oil & Gas Operator | Dec 2012 |
434 | Energy Production Co | Pittsburgh, PA 15241-3949 | Oil & Gas Operator | Dec 1994 |
435 | Energy Reserves Group | Houston, TX 770563020 | Oil & Gas Operator | Apr 1996 |
436 | Energy Search Company Inc | Aurora, CO 80011 | Oil & Gas Operator | Jun 2021 |
437 | Enervest Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
438 | Enpro LLC | Cottonwood, UT 84047 | Oil & Gas Operator | Nov 2017 |
439 | Enre LP | Kingwood, TX 77339 | Oil & Gas Operator | Feb 2004 |
440 | Ensource Inc | Midland, TX 79705 | Oil & Gas Operator | Aug 1998 |
441 | Enstar Petroleum Inc | | Oil & Gas Operator | Apr 1985 |
442 | Entek GRB LLC | Denver, CO 80202 | Oil & Gas Operator | Oct 2021 |
443 | Envirosearch Corporation | | Oil Operator | Dec 1992 |
444 | EOG Resources Inc | Midland, TX 79702 | Oil & Gas Operator | Apr 2024 |
445 | EOG Y Resources Inc | Artesia, NM 88210 | Oil & Gas Operator | Feb 2019 |
446 | EP Energy E&P Company, LP | Houston, TX 77210 | Oil & Gas Operator | May 2022 |
447 | Equitable Resources Energy Company | Big Stone Gap, VA 24219 | Oil & Gas Operator | Dec 1997 |
448 | Equity Oil Company | Salt Lake City, UT 84110-095 | Oil & Gas Operator | Aug 2004 |
449 | Erg Resources LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2015 |
450 | Escalera Resources Co | Casper, WY 82602 | Oil & Gas Operator | May 2018 |
451 | Essex Energy Inc | Yukon, OK 73099-5126 | Oil & Gas Operator | Apr 2014 |
452 | Euroamerican Energy Group Inc | | Oil & Gas Operator | Oct 1993 |
453 | Everest Oil & Gas LLC | Santa Barbara, CA 93101 | Oil Operator | Jan 2024 |
454 | Evergreen Operating Company | Denver, CO 80202 | Oil & Gas Operator | Apr 1996 |
455 | Evertson Operating Company Inc | Kimball, NE 69145 | Oil & Gas Operator | Nov 2022 |
456 | Exco Resources Inc | Dallas, TX 75251 | Oil & Gas Operator | Dec 2023 |
457 | Exeter Drilling Company | Denver, CO 80217 | Oil & Gas Operator | Sep 1997 |
458 | Extraction Oil & Gas LLC | Denver, CO 80202 | Oil & Gas Operator | Feb 2024 |
459 | Exxon Mobil Corporation | Spring, TX 77389 | Oil & Gas Operator | Apr 2024 |
460 | Exxonmobil Oil Corp | Houston, TX 77210 | Oil & Gas Operator | Mar 2024 |
461 | F & J Oil LLC | Newcastle, WY 82701 | Oil & Gas Operator | Oct 2015 |
462 | Fairways Offshore Expl Inc | Houston, TX 77040 | Oil & Gas Operator | Mar 2016 |
463 | Falcon Creek Resources, Inc. | Tulsa, OK 74137 | Oil & Gas Operator | Apr 2001 |
464 | Family Tree Corporation | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2013 |
465 | Fancher Oil LLC | Greenwood, CO 80111 | Oil & Gas Operator | Nov 2006 |
466 | Farnsworth & Kaiser Oil Company | Newcastle, WY 82701 | Oil & Gas Operator | Sep 2012 |
467 | Faulconer Vernon E Inc | Tyler, TX 75711 | Oil & Gas Operator | Jan 2024 |
468 | FDF Resources | Newcastle, WY 82701 | Oil & Gas Operator | Feb 2024 |
469 | FDL Operating, LLC | Judson, TX 75660 | Oil & Gas Operator | Apr 2024 |
470 | Federated Oil & Gas Properties | Traverse City, MI 49685 | Gas Operator | Mar 2014 |
471 | Felmont Oil Corporation | Walnut Creek, CA 94596-3568 | Oil & Gas Operator | Feb 1990 |
472 | Ferguson & Bosworth | | Oil & Gas Operator | May 2007 |
473 | Ferguson Bob | Casper, WY 82605 | Oil Operator | May 2004 |
474 | Ferguson Energy Inc | Evanston, WY 82930 | Oil & Gas Operator | Dec 2023 |
475 | Ferguson Oil Company Inc | | Oil & Gas Operator | Apr 1994 |
476 | Ferreira Oil Properties LLC | Carefree, AZ 85377 | Oil Operator | Apr 2014 |
477 | Fidelity Exploration & Production Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2024 |
478 | Fina Oil And Chemical Company | Dallas, TX 75221 | Oil & Gas Operator | May 2019 |
479 | Finaly Resources LLC | Sunset Beach, CA 90742 | Oil & Gas Operator | Apr 2024 |
480 | Finley Resources Inc | Fort Worth, TX 76113 | Oil & Gas Operator | Apr 2024 |
481 | First Energy Corporation | | Oil & Gas Operator | Jun 1993 |
482 | First Energy Properties | Houston, TX 77060 | Oil & Gas Operator | Dec 1986 |
483 | First Sourcenergy Wyoming Inc | Gillette, WY 82718 | Gas Operator | Jul 2003 |
484 | Five States Operating Company LLC | Dallas, TX 75206 | Oil & Gas Operator | Feb 2024 |
485 | Flag-Redfern Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Jul 2002 |
486 | Flahive Oil & Gas LLC | Golden, CO 80401 | Oil Operator | Oct 1995 |
487 | Florida Gas Exploration Co | | Oil & Gas Operator | Feb 1985 |
488 | Flow Production Company | Midland, TX 79708 | Oil & Gas Operator | Mar 2005 |
489 | Flying J Oil & Gas Inc | North Salt Lake, UT 84054 | Oil & Gas Operator | Dec 2009 |
490 | FMC Corporation | Green River, WY 82935 | Oil & Gas Operator | Dec 2008 |
491 | Forcenergy Inc | Miami, FL 33129 | Oil & Gas Operator | Mar 2015 |
492 | Forcenergy Onshore Inc. | Houston, TX 77002 | Oil & Gas Operator | Dec 2012 |
493 | Foree R L | Dallas, TX 75225 | Oil & Gas Operator | Aug 2001 |
494 | Foreland Resources LLC | Lakewood, CO 80228 | Oil & Gas Operator | Mar 2024 |
495 | Forest Oil Permian Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
496 | Forestar Petroleum Corporation | Denver, CO 80202 | Oil & Gas Operator | May 2017 |
497 | Fossil Creek Resources LLC | Arlington, TX 76011 | Oil & Gas Operator | Mar 2015 |
498 | Fossil Energy Inc | Austin, TX 78746 | Oil & Gas Operator | Apr 2024 |
499 | Foundation Energy Managment LLC | Addison, TX 74119 | Oil & Gas Operator | Feb 2024 |
500 | Four-A Energy LLC | Cody, WY 82414 | Oil Operator | Mar 2024 |