401 | Rio Bravo Expl. & Prod. Co. | Houston, TX 77055 | Oil & Gas Operator | Apr 2020 |
402 | Rio Bravo Oil Company | The Woodlands, TX 77381 | Oil & Gas Operator | Feb 2002 |
403 | Riseden, LTD | | Oil & Gas Operator | Nov 1989 |
404 | RLM Energy Company Inc. | Monroe, LA 71201 | Oil & Gas Operator | Mar 2008 |
405 | Robert P. Artzberger | | Oil & Gas Operator | Dec 1979 |
406 | Rockleigh K. Thurman | | Oil & Gas Operator | Jan 2024 |
407 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | May 2024 |
408 | Rutherford Oil Corporation | Houston, TX 77046 | Oil & Gas Operator | Jun 2019 |
409 | S & J Operating Company | Wichita Falls, TX 76301 | Oil & Gas Operator | Mar 2015 |
410 | S & S Oil Company | Electra, TX 76360 | Oil & Gas Operator | May 2024 |
411 | S&B Petroleum Corporation | | Oil & Gas Operator | Jun 1994 |
412 | S2 Energy Operating LLC | | Oil & Gas Operator | Nov 2023 |
413 | Sackett Oil Company | | Oil & Gas Operator | Sep 1995 |
414 | Samedan Oil Corporation | Houston, TX 77067 | Oil & Gas Operator | Dec 2019 |
415 | Samson Contour Energy E&P, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2017 |
416 | Samson Exploration LLC | Tulsa, OK 74101 | Oil & Gas Operator | Mar 2024 |
417 | Samson Resources Company | Tulsa, OK 74103 | Oil & Gas Operator | Feb 2024 |
418 | Sandpoint Energy Partners LLC | | Oil Operator | Jan 2024 |
419 | Sandridge Exploration And Production LLC | Oklahoma City, OK 73102 | Oil & Gas Operator | May 2024 |
420 | Secondary Recovery, Inc. | | Oil & Gas Operator | Dec 1991 |
421 | Semo, Inc. | | Oil & Gas Operator | Feb 2002 |
422 | Senior Drilling & Expl Co Inc. | | Oil & Gas Operator | Apr 1993 |
423 | Setex Oil And Gas Company | Houston, TX 77002 | Oil & Gas Operator | Feb 2012 |
424 | Shelf Energy, LLC | | Oil & Gas Operator | Dec 2023 |
425 | Shell Oil Company | Houston, TX 77210 | Oil & Gas Operator | Apr 2015 |
426 | Shell Western E&P Inc. | Houston, TX 77001 | Oil & Gas Operator | May 2011 |
427 | Shocker Energy, Inc. | | Oil & Gas Operator | Oct 1992 |
428 | Shoreline Southeast LLC | Lafayette, LA 70508 | Oil & Gas Operator | Jun 2017 |
429 | Sierra Production Company | | Oil & Gas Operator | May 1986 |
430 | Singer Fleischaker Oil Op. Co. | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2002 |
431 | Singer-Fleischaker,Dillon | | Oil & Gas Operator | Aug 1979 |
432 | Sklar & Phillips Oil Co. | Shreveport, LA 71101 | Oil & Gas Operator | Dec 2000 |
433 | Smith Production Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | May 2024 |
434 | Sohio Petroleum Co. | Casper, WY 82602 | Oil & Gas Operator | Apr 1986 |
435 | Source Petroleum Inc. | San Antonio, TX 78265 | Oil & Gas Operator | May 2024 |
436 | Southern G Holdings, LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2007 |
437 | Southern Operating, Inc. | | Oil Operator | Dec 2000 |
438 | Spartan Petroleum Corporation | Houston, TX 77079 | Oil & Gas Operator | Oct 1987 |
439 | St. Mary Operating Company | Denver, CO 80203 | Oil & Gas Operator | Mar 2019 |
440 | Stratco Operating Co Inc | Austin, TX 78701 | Oil & Gas Operator | May 2024 |
441 | Striper Oil, Inc. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2002 |
442 | Subsurface Resources Inc | Logan, UT 84321 | Oil & Gas Operator | Aug 1990 |
443 | Summit Energy, Inc. | Littleton, CO 80127 | Oil & Gas Operator | Aug 2013 |
444 | Sun Exploration-Production Co. | | Oil & Gas Operator | Jan 1990 |
445 | Sun Texas Company | | Oil & Gas Operator | Jun 1981 |
446 | Sunland Production Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2024 |
447 | Superior Oil Co. | Denver, CO 80217-5444 | Oil & Gas Operator | Feb 2001 |
448 | Sutton Joint Account | | Oil Operator | Mar 1988 |
449 | Swift Energy Company | Houston, TX 77060 | Oil & Gas Operator | Mar 2021 |
450 | Synergy Oil & Gas, Inc. | Houston, TX 77024 | Oil & Gas Operator | Nov 2019 |
451 | T & B Resources | | Oil & Gas Operator | Jul 1990 |
452 | Tabco Exploration Inc. | New Orleans, LA 70131 | Oil & Gas Operator | Dec 1998 |
453 | Tabco Producing Co. | | Oil & Gas Operator | Jan 1998 |
454 | Tadlock Properites | | Oil & Gas Operator | Jan 1994 |
455 | Targa Midstream Services LLC | Houston, TX 77002 | Oil Operator | Mar 2023 |
456 | Teal Petroleum Co. | | Oil & Gas Operator | Sep 1978 |
457 | Tee Operating Company | | Oil & Gas Operator | Jun 1989 |
458 | Telico Minerals, L.L.C. | | Oil & Gas Operator | Sep 2019 |
459 | Tenneco Oil Company | Oklahoma City, OK 73125 | Oil & Gas Operator | Feb 2024 |
460 | Tennessee Gas Pipeline Company | Houston, TX 77252 | Oil & Gas Operator | Dec 2011 |
461 | Tennessee Gas Pipeline Company, LLC | | Oil Operator | Dec 2023 |
462 | Tepee Petroleum Company, Inc. | Houston, TX 77098 | Oil & Gas Operator | Feb 2014 |
463 | Terra Resources, Inc. | Casper, WY 82601 | Oil & Gas Operator | Jun 1990 |
464 | Terrier Oil Company | | Oil & Gas Operator | Feb 2015 |
465 | Texaco Inc | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2017 |
466 | Texas Meridian Res. Expl., Inc. | Houston, TX 77079 | Oil & Gas Operator | Jun 1998 |
467 | Texas Pacific Oil Company Inc. | | Oil & Gas Operator | Dec 1980 |
468 | Texas Petroleum Investment Company | Houston, TX 77057 | Oil & Gas Operator | May 2024 |
469 | The Exploration Co. Of La, Inc | | Oil & Gas Operator | Nov 1987 |
470 | The Meridian Res. & Exp. LLC | | Oil & Gas Operator | Sep 2010 |
471 | Three S & T Oil Co., Inc. | | Oil & Gas Operator | May 1985 |
472 | Three Sisters Investments, LTD | | Oil & Gas Operator | Oct 1989 |
473 | Toce Energy, L.L.C. | | Oil & Gas Operator | Dec 2017 |
474 | Toce Oil Company | | Oil & Gas Operator | Dec 2014 |
475 | Tom West | | Oil & Gas Operator | Nov 1989 |
476 | Torrid Energy Company | | Oil & Gas Operator | Jun 1988 |
477 | Total Minatome Corporation | Houston, TX 77210 | Oil & Gas Operator | Dec 1998 |
478 | Traillour Oil Co. | | Oil & Gas Operator | Mar 1990 |
479 | Transcontinental Gas P/L Corp. | | Oil & Gas Operator | Dec 2009 |
480 | Transcontinental Gas Pipeline Co LLC | | Oil Operator | Jan 2024 |
481 | Transtexas Gas Corporation | Houston, TX 77265 | Oil & Gas Operator | Aug 2005 |
482 | Transworld Expl. & Prod., Inc. | | Oil & Gas Operator | Mar 2004 |
483 | Trek Resources, Inc. | Dallas, TX 75207 | Oil & Gas Operator | May 2024 |
484 | Tri Investment Company | | Oil Operator | Mar 1980 |
485 | Tri-Production Company | | Oil Operator | Apr 1994 |
486 | Tribal Oil Company | | Oil & Gas Operator | Dec 1981 |
487 | Trunkline Gas Company | | Oil Operator | Mar 2008 |
488 | Tryvest, Inc. | | Oil & Gas Operator | Sep 1991 |
489 | Tucker Operating Co., Inc. | Victoria, TX 77903 | Oil & Gas Operator | May 2024 |
490 | Tundra Energy | | Oil Operator | Jan 2024 |
491 | Txo Production Corp. | Ganado, TX 77962 | Oil & Gas Operator | Aug 2022 |
492 | TXP Operating Company | | Oil & Gas Operator | Jul 1992 |
493 | U. D. Man, Inc. | San Antonio, TX 78212 | Oil & Gas Operator | May 2024 |
494 | U.S. Exploration Company | Houston, TX 77002 | Oil & Gas Operator | Aug 2003 |
495 | Union Exploration Partners, LTD. | | Oil & Gas Operator | Aug 1990 |
496 | Union Oil Co Of California | Midland, TX 79706 | Oil & Gas Operator | Jan 2022 |
497 | Union Pacific Resources Co. | Fort Worth, TX 76101 | Oil & Gas Operator | Sep 2002 |
498 | Union Texas Petroleum Corp. | Houston, TX 77252-2120 | Oil & Gas Operator | Dec 2014 |
499 | United Gas Pipe Line Co. | | Oil Operator | Aug 1993 |
500 | United World Energy Corporation | | Oil & Gas Operator | Jan 2024 |