| 25501 | Robinowitz Oil Company, A General Partnership | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2023 |
| 25502 | Robinson Brothers Drilling Co | | Oil & Gas Operator | Jul 2002 |
| 25503 | Robinson Drilling Of Texas | Big Spring, TX 79721 | Oil & Gas Operator | Oct 1996 |
| 25504 | Robinson Energy & Exploration, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Aug 2008 |
| 25505 | Robinson Engineering & Oil Company, Inc | Evansville, IN 47716 | Oil & Gas Operator | Dec 2022 |
| 25506 | Robinson Gary | Wynona, OK 74084 | Oil Operator | Dec 2024 |
| 25507 | Robinson Oil & Gas, Inc. | Chico, TX 76431 | Oil & Gas Operator | Aug 2003 |
| 25508 | Robinson Oil Co. | Graham, TX 76450 | Oil & Gas Operator | Apr 2025 |
| 25509 | Robinson Oil Com | | Oil & Gas Operator | Feb 1995 |
| 25510 | Robinson Oil Company, LLC | Billings, MT 59103 | Gas Operator | Dec 2015 |
| 25511 | Robinson Oil Inc | Eunice, NM 88231 | Oil & Gas Operator | Jun 2015 |
| 25512 | Robinson Operating Company | Abilene, TX 79604 | Oil & Gas Operator | Aug 2012 |
| 25513 | Robinson Resource Dev. Co.Inc. | | Oil & Gas Operator | Oct 1982 |
| 25514 | Robinson Tracy D | Duncan, OK 73534 | Oil Operator | Oct 2018 |
| 25515 | Robinson'S Oil Inc. | Alfred Station, NY 14803 | Oil & Gas Operator | Dec 2023 |
| 25516 | Robinson, Beryl A. | Peru, KS 67360 | Oil & Gas Operator | Mar 2012 |
| 25517 | Robinson, Irvin | Abilene, TX 79608 | Oil & Gas Operator | May 1999 |
| 25518 | Robison, J. H. & Assoc. LTD. | Corpus Chrsti, TX 78413 | Oil & Gas Operator | Apr 1996 |
| 25519 | Robison, L. E. Oil | Yates Center, KS 66783 | Oil Operator | Sep 2001 |
| 25520 | Robl-Six, Inc. | Ellinwood, KS 67526 | Oil Operator | Dec 2019 |
| 25521 | Roblyn Oil Inc | Allen, OK 74825-6933 | Oil & Gas Operator | Nov 2024 |
| 25522 | Roblyn Petroleum Corp. | | Oil & Gas Operator | May 1983 |
| 25523 | Robson & Shults Prod Corp | Mannford, OK 74044 | Oil & Gas Operator | Jun 1995 |
| 25524 | Robson Petroleum Company | Tulsa, OK 74104 | Oil & Gas Operator | Jan 1995 |
| 25525 | Robson Resources Inc | Tulsa, OK 74104 | Oil & Gas Operator | May 1998 |
| 25526 | Robuck Petroleum, LLC | Nacogdoches, TX 75965 | Oil & Gas Operator | Apr 2025 |
| 25527 | Roc Energy, Inc. | Midland, TX 79710 | Oil & Gas Operator | Feb 2013 |
| 25528 | Roc Operating, Inc. | Plano, TX 75093 | Oil & Gas Operator | Oct 2008 |
| 25529 | Roca Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 25530 | Roca Production, Inc. | Fort Worth, TX 76107 | Oil & Gas Operator | Apr 2025 |
| 25531 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 25532 | Rocanville Corporation | Dallas, TX 75225 | Oil & Gas Operator | Dec 2016 |
| 25533 | Rocc Oil & Gas, L.P. | Houston, TX 77084 | Oil & Gas Operator | Apr 2024 |
| 25534 | Rocc Operating, LLC | Houston, TX 77084 | Oil & Gas Operator | Apr 2025 |
| 25535 | Roche, E. Michael | Elma, NY 14059 | Gas Operator | Dec 2023 |
| 25536 | Rochelle Oil & Gas | Gillette, WY 82717 | Oil & Gas Operator | Mar 2024 |
| 25537 | Rochez, Mary B. | East Amherst, NY 14051 | Gas Operator | Dec 2023 |
| 25538 | Rocinante | Houston, TX 77058 | Oil Operator | Apr 2025 |
| 25539 | Rock Bottom Oil LLC | | Oil Operator | Dec 2023 |
| 25540 | Rock Bottom Oil, GP, L.L.C. | Nacogdoches, TX 75963 | Oil & Gas Operator | Apr 2025 |
| 25541 | Rock Creek Crude, LLC | Morrill, KS 66515 | Oil Operator | Dec 2024 |
| 25542 | Rock Creek Energy Co | Ada, OK 74820-5725 | Oil Operator | Jul 2022 |
| 25543 | Rock Creek Oil Co. | Iowa Park, TX 76367 | Oil Operator | Mar 2008 |
| 25544 | Rock Creek Oil, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Nov 2019 |
| 25545 | Rock Creek Resources LLC | Englewood, CO 80112 | Oil & Gas Operator | Dec 2021 |
| 25546 | Rock Energy Operating Company | | Oil & Gas Operator | Nov 2008 |
| 25547 | Rock Energy Resources, Inc. | Houston, TX 77056 | Oil & Gas Operator | Apr 2025 |
| 25548 | Rock Energy, Inc. | | Oil & Gas Operator | Sep 1992 |
| 25549 | Rock Fish Operating LLC | McKinney, TX 75070 | Oil & Gas Operator | Apr 2025 |
| 25550 | Rock Hill Operating | Burkburnett, TX 76354 | Oil & Gas Operator | Apr 2025 |
| 25551 | Rock Oil Company | Broken Arrow, OK 74014-6106 | Oil & Gas Operator | Jan 2025 |
| 25552 | Rock Oil Corporation | Lawrence, KS 66046 | Oil Operator | Oct 2004 |
| 25553 | Rock Oil, Inc. | | Oil Operator | Nov 1989 |
| 25554 | Rock Operating | Abilene, TX 79608 | Oil & Gas Operator | Apr 2025 |
| 25555 | Rock Petroleum, LLC | Fort Worth, TX 76102 | Oil & Gas Operator | Aug 2024 |
| 25556 | Rock Resources, Inc. | Corpus Chrsti, TX 78414 | Oil & Gas Operator | Apr 2025 |
| 25557 | Rock River Operating Inc | Laramie, WY 82070 | Oil & Gas Operator | Jan 2025 |
| 25558 | Rock Solid Operating, LLC | Southlake, TX 76092 | Oil Operator | Sep 2021 |
| 25559 | Rock Well Petroleum (U.S.), Inc. | Canada, 00100 | Oil & Gas Operator | Sep 2014 |
| 25560 | Rockbridge Oil & Gas | Houston, TX 77027 | Oil & Gas Operator | Mar 1990 |
| 25561 | Rockbridge Oil And Gas, Inc. | Houston, TX 77227 | Oil & Gas Operator | Nov 1997 |
| 25562 | Rockbridge Petroleum LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 2009 |
| 25563 | Rockcliff Energy Operating LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 25564 | Rockcliff Operating La LLC | | Oil & Gas Operator | Jul 2022 |
| 25565 | Rockcliff Operating New Mexico LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2018 |
| 25566 | Rockdale Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | Dec 2020 |
| 25567 | Rockdale Marcellus LLC | Canonsburg, PA 15317 | Gas Operator | Apr 2022 |
| 25568 | Rockdale Resources Corporation | Houston, TX 77024 | Oil Operator | Jul 2016 |
| 25569 | Rockefeller Hughes (USA) LLC | Houston, TX 77027 | Oil & Gas Operator | Jul 2015 |
| 25570 | Rocker A Operating Company | Post, TX 79356 | Oil & Gas Operator | Aug 2022 |
| 25571 | Rocker B Production, L.L.C. | Graham, TX 76450 | Gas Operator | Apr 2025 |
| 25572 | Rocket Energy Corp | Muskogee, OK 74402-1665 | Oil & Gas Operator | Dec 2003 |
| 25573 | Rocket Oil Company | Duncan, OK 73534 | Oil & Gas Operator | Apr 2015 |
| 25574 | Rocket Petroleum Company | | Oil & Gas Operator | Aug 2005 |
| 25575 | Rockford CBM LLC | Tulsa, OK 74103-4335 | Oil & Gas Operator | Jan 2013 |
| 25576 | Rockford Energy Partners II, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2007 |
| 25577 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 25578 | Rockford Panhandle, LLC | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2008 |
| 25579 | Rockhound Petroleum, LLC | St. John, KS 67576 | Oil & Gas Operator | Dec 2024 |
| 25580 | Rockies Oil & Gas Inc | | Oil & Gas Operator | Dec 2015 |
| 25581 | Rockies Resources Holdings LLC | Lakewood, CO 80228 | Oil & Gas Operator | Feb 2025 |
| 25582 | Rockies Standard Oil Company | Provo, UT 84604 | Oil & Gas Operator | Oct 2020 |
| 25583 | Rockin 'A' Oil | | Oil Operator | Dec 2024 |
| 25584 | Rockin 9 Oil And Gas, LLC | Auburndale, FL 33823 | Gas Operator | Dec 2024 |
| 25585 | Rockin Bar Nothin Ranch, Inc. | Independence, KS 67301 | Oil Operator | Dec 2024 |
| 25586 | Rockin C Production, L.L.C. | Nocona, TX 76255 | Oil Operator | Apr 2025 |
| 25587 | Rockin G. Energy, LLC | Weatherford, TX 76087 | Gas Operator | Sep 2020 |
| 25588 | Rockin K Enterprises LLC | Riverside, MO 64168 | Oil Operator | Dec 2024 |
| 25589 | Rockin S Field Service LLC | Stigler, OK 74462 | Gas Operator | Jan 2025 |
| 25590 | Rockin' D, LLC | Big Spring, TX 79720 | Oil & Gas Operator | Mar 2024 |
| 25591 | Rocking Lazy Little B Ranch Oil | Cedar Creek, TX 78612 | Oil Operator | Apr 2011 |
| 25592 | Rocking R Investments, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Apr 2025 |
| 25593 | Rocking, R, Drilling & Prod Co. | Bowie, TX 76230 | Oil & Gas Operator | Apr 2025 |
| 25594 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Jan 2025 |
| 25595 | Rockleigh K. Thurman | | Oil & Gas Operator | Jan 2025 |
| 25596 | Rockoil Energy Of Texas, Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Apr 2025 |
| 25597 | Rockport Energy Solutions LLC | Austin, TX 78730 | Oil & Gas Operator | Apr 2025 |
| 25598 | Rockport Georgetown Holdings,LP | Bellaire, TX 77401 | Oil & Gas Operator | Nov 2007 |
| 25599 | Rocksauce Opr LLC | Canonsburg, PA 15317-3906 | Oil & Gas Operator | Dec 2024 |
| 25600 | Rocksprings Energy Company LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 1997 |