501 | Sterling Energy Corporation | Denver, CO 80202 | Oil & Gas Operator | Sep 1995 |
502 | Stevenson, Albert | | Oil & Gas Operator | Jun 1979 |
503 | Stewart Petroleum Corporation | Greenwood VIllage, CO 80111 | Oil & Gas Operator | Dec 2023 |
504 | Stone Energy Corporation | Denver, CO 80202-2828 | Oil & Gas Operator | Oct 2014 |
505 | Stone Energy LLC | Denver, CO 80202 | Oil & Gas Operator | May 2005 |
506 | Stone, D J | Palo Alto, CA 94301 | Oil & Gas Operator | Sep 1985 |
507 | Subsurface Resources Inc | Logan, UT 84321 | Oil & Gas Operator | Aug 1990 |
508 | Summit Operating LLC | Boulder, CO 80301 | Oil & Gas Operator | Feb 2024 |
509 | Sun Oil Company | Arlington, TX 76006 | Oil & Gas Operator | Dec 2021 |
510 | Sunfield Energy Company | Houston, TX 77084-5113 | Oil & Gas Operator | Jul 1999 |
511 | Sunray DX Oil Co | | Gas Operator | Dec 1983 |
512 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
513 | Supreme X Oil Company | | Oil & Gas Operator | Dec 1983 |
514 | Supron Energy Corp | | Oil & Gas Operator | Oct 1995 |
515 | Swepi LP | Houston, TX 77079 | Oil & Gas Operator | Jul 2020 |
516 | Swepi/Western Division | Houston, TX 77210 | Oil & Gas Operator | Aug 1984 |
517 | Swevco-Sabw LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2024 |
518 | Synergy Operating LLC | Farmington, NM 87499 | Oil & Gas Operator | Feb 2024 |
519 | Tall Dune Resources, LLC | Boerne, TX 78006 | Oil & Gas Operator | Apr 2024 |
520 | Tamarack Energy Inc | Midland, TX 79701 | Oil & Gas Operator | Dec 2015 |
521 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Nov 2023 |
522 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
523 | Teton Energy Co Inc | Denver, CO 80239 | Oil Operator | Dec 1983 |
524 | Texaco E & P Inc | Houston, TX 77099 | Oil & Gas Operator | Apr 2024 |
525 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
526 | Texaco Producing Inc. | Rock Springs, WY 82901 | Oil & Gas Operator | Dec 2000 |
527 | Texakoma Oil & Gas Corp | Dallas, TX 75240 | Oil & Gas Operator | Sep 2014 |
528 | Texas American Oil Corporation | Midland, TX 79701 | Oil & Gas Operator | Jan 2001 |
529 | Texas Eastern Skyline Oil | Houston, TX 77252 | Oil & Gas Operator | Jan 1987 |
530 | Texas Oil & Gas | Denver, CO 80264 | Oil & Gas Operator | Oct 1981 |
531 | Texoma Production Co | | Oil & Gas Operator | Jun 1986 |
532 | The Houston Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Apr 2017 |
533 | The Texas Company | FT Worth, TX 76101 | Oil & Gas Operator | Dec 2013 |
534 | Thompson, J C | Denver, CO 80237-2843 | Oil & Gas Operator | Jul 2005 |
535 | Three States Natural Gas | | Oil & Gas Operator | Mar 1976 |
536 | Thriftway Company | Farmington, NM 87401 | Oil & Gas Operator | Dec 1996 |
537 | Thurston Energy Operating | Vernal, UT 84078 | Oil & Gas Operator | Dec 2015 |
538 | Tidewater Co | | Oil & Gas Operator | Sep 1967 |
539 | Tiger Energy Operating, LLC | Los Angeles, CA 90025 | Oil & Gas Operator | Jun 2019 |
540 | Toc Oil Inc | Denver, CO 80202 | Oil & Gas Operator | Feb 2024 |
541 | Tola Production Company | Dallas, TX 75367 | Oil & Gas Operator | Apr 2024 |
542 | Toledo Mining Co | Irving, TX 75061 | Oil Operator | Dec 1989 |
543 | Tom Brown Inc | Denver, CO 80202 | Oil & Gas Operator | Dec 2004 |
544 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
545 | Total Petroleum Inc | Denver, CO 80201-0500 | Oil & Gas Operator | Nov 2006 |
546 | Transfuel Resources Co | Houston, TX 77215 | Oil & Gas Operator | Aug 2013 |
547 | Travis Oil Co | Los Angeles, CA 90024 | Oil Operator | Jan 1990 |
548 | Trend Oil Co | Petaluma, CA 94954 | Oil & Gas Operator | Feb 2017 |
549 | Triangle Development Co | Mahtomedi, MN 55115 | Gas Operator | Feb 1982 |
550 | Tricentrol Resources Inc | Englewood, CO 80111 | Oil & Gas Operator | Jun 1984 |
551 | Trigg Drilling Company Inc | Oklahoma City, OK 73105 | Oil & Gas Operator | Jan 2013 |
552 | True Oil LLC | Casper, WY 82602 | Oil & Gas Operator | Feb 2024 |
553 | Twin Arrow Inc | Rangely, CO 81648 | Oil & Gas Operator | Sep 2009 |
554 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
555 | Uinta Oil & Gas | Roosevelt, UT 84066 | Oil & Gas Operator | Nov 1997 |
556 | Uinta Wax Operating, LLC | Fort Worth, TX 76109 | Oil & Gas Operator | Jan 2024 |
557 | Uinta-Taylor Fund, LTD | Roosevelt, UT 84066 | Oil & Gas Operator | Nov 2018 |
558 | Uintah Investors LLC | Orem, UT 84097 | Oil & Gas Operator | Feb 2024 |
559 | Ultra Resources Inc | Houston, TX 77060 | Oil & Gas Operator | Jan 2024 |
560 | Ultramar Oil & Gas LTD | Houston, TX 77060 | Oil & Gas Operator | Jul 1995 |
561 | Umc Petroleum Corporation | Houston, TX 77002 | Oil & Gas Operator | Mar 2015 |
562 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
563 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2002 |
564 | Union Petrochemical | | Oil & Gas Operator | Dec 1982 |
565 | Union Texas Petroleum | Houston, TX 77252 | Oil & Gas Operator | Oct 1991 |
566 | United Energy Corporation | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2024 |
567 | United Producing Co Inc | | Oil & Gas Operator | May 1961 |
568 | United Utilities Corporation | Conroe, TX 77301 | Oil & Gas Operator | Oct 1998 |
569 | Universal Resources Corp. | Salt Lake Cty, UT 84145 | Oil & Gas Operator | Jan 2000 |
570 | Urban Oil & Gas Group, LLC | Plano, TX 75074 | Oil & Gas Operator | Apr 2024 |
571 | Us Oil & Gas Inc | Marietta, OH 45750 | Oil & Gas Operator | Feb 2024 |
572 | Utah Gas Op LTD | Rangely, CO 81648 | Oil & Gas Operator | Feb 2024 |
573 | Utah-Westar DRL Ventures | Dallas, TX 75201 | Oil & Gas Operator | Nov 1987 |
574 | Ute Energy Upstream Holdings LLC | Denver, CO 80202 | Oil & Gas Operator | Dec 2012 |
575 | Utex Oil Company | Elko, NV 89803 | Oil & Gas Operator | Dec 1988 |
576 | Valley Operating Inc | Denver, CO 80218-3633 | Oil & Gas Operator | Jan 2004 |
577 | Vantage Energy Uinta LLC | Denver, CO 80237-2746 | Oil & Gas Operator | Aug 2016 |
578 | Vaquero Uinta, LLC | Bakersfield, CA 93309 | Oil & Gas Operator | Feb 2024 |
579 | Vortt Exploration Company, Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2019 |
580 | Vukasovich Drilling | | Oil & Gas Operator | Mar 1988 |
581 | W C Investments LTD | Salt Lake City, UT 84120 | Oil & Gas Operator | Aug 2000 |
582 | Wainoco Oil & Gas Company | Houston, TX 77024 | Oil & Gas Operator | Dec 2005 |
583 | Walker Energy Group | Houston, TX 77215-1089 | Oil & Gas Operator | Jun 1992 |
584 | Walker Explor & Prod Corp | Unknown, UT 99999 | Oil & Gas Operator | Dec 1989 |
585 | Wapiti Operating, LLC | Houston, TX 77043 | Oil & Gas Operator | Apr 2024 |
586 | Warren American Oil Co | Tulsa, OK 74147 | Oil & Gas Operator | Feb 2024 |
587 | Wasatch Oil & Gas Corp | Farmington, UT 84025-0699 | Oil & Gas Operator | Mar 2002 |
588 | Webb, Max D | Farmington, NM 87499 | Oil Operator | Dec 2022 |
589 | Weger Petroleum Corp | Dallas, TX 75251 | Oil Operator | Jan 1987 |
590 | Wesco Operating, Inc. | Casper, WY 82602 | Oil & Gas Operator | Feb 2024 |
591 | Wesgra Corporation | Mexican Hat, UT 84531 | Oil & Gas Operator | Jan 2024 |
592 | Wessely Energy Company | Dallas, TX 75206 | Oil & Gas Operator | May 2001 |
593 | Western Alliance Petroleum | | Oil & Gas Operator | Dec 1987 |
594 | Western Natural Gas | | Oil & Gas Operator | Aug 1974 |
595 | Western Resources And Clean Energy, LLC | Manti, UT 84642 | Oil & Gas Operator | Jan 2024 |
596 | Westport Oil & Gas Company LP | The Woodlands, TX 77380 | Oil & Gas Operator | Feb 2007 |
597 | Weststar Exploration Co | Houston, TX 77027 | Oil & Gas Operator | Mar 2021 |
598 | Wexpro Company | Rock Springs, WY 82902-0458 | Oil & Gas Operator | Feb 2024 |
599 | Whiting Oil And Gas Corporation | Houston, TX 77002 | Oil & Gas Operator | Apr 2024 |
600 | Whitley, William W | Denver, CO 80209 | Oil & Gas Operator | Dec 1983 |