| 9401 | Rockefeller Hughes (USA) LLC | Houston, TX 77027 | Oil & Gas Operator | Jul 2015 |
| 9402 | Rocker A Operating Company | Post, TX 79356 | Oil & Gas Operator | Aug 2022 |
| 9403 | Rocker B Production, L.L.C. | Graham, TX 76450 | Gas Operator | Aug 2025 |
| 9404 | Rockford Energy Partners II, LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2007 |
| 9405 | Rockford Energy Partners III,LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2012 |
| 9406 | Rockford Panhandle, LLC | Tulsa, OK 74105 | Oil & Gas Operator | Sep 2008 |
| 9407 | Rockin C Production, L.L.C. | Nocona, TX 76255 | Oil Operator | May 2025 |
| 9408 | Rockin' D, LLC | Big Spring, TX 79720 | Oil & Gas Operator | Mar 2024 |
| 9409 | Rocking Lazy Little B Ranch Oil | Cedar Creek, TX 78612 | Oil Operator | Apr 2011 |
| 9410 | Rocking R Investments, Inc. | San Antonio, TX 78217 | Oil & Gas Operator | Oct 2025 |
| 9411 | Rocking, R, Drilling & Prod Co. | Bowie, TX 76230 | Oil & Gas Operator | Oct 2025 |
| 9412 | Rockland Oil Company | Addison, TX 75001 | Oil & Gas Operator | Jun 2025 |
| 9413 | Rockoil Energy Of Texas, Inc. | Weatherford, TX 76086 | Oil & Gas Operator | Oct 2025 |
| 9414 | Rockport Energy Solutions LLC | Austin, TX 78730 | Oil & Gas Operator | Oct 2025 |
| 9415 | Rockport Georgetown Holdings,LP | Bellaire, TX 77401 | Oil & Gas Operator | Nov 2007 |
| 9416 | Rocksprings Energy Company LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 1997 |
| 9417 | Rockstar Production, LLC | Graham, TX 76450 | Oil Operator | Oct 2025 |
| 9418 | Rockstar Resources, LLC | Sourlake, TX 77659 | Oil & Gas Operator | Oct 2025 |
| 9419 | Rockwall Marketing Corporation | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2007 |
| 9420 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 9421 | Rockwell Energy, LLC | Spring, TX 77386 | Oil & Gas Operator | Sep 2014 |
| 9422 | Rockwood Resources Inc | Coleman, TX 76834 | Oil & Gas Operator | Oct 2025 |
| 9423 | Rocky Creek Resources, LLC | Houston, TX 77055 | Oil & Gas Operator | Mar 2025 |
| 9424 | Rocky Point Oil, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Oct 2025 |
| 9425 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Oct 2025 |
| 9426 | Rocoso Resources, LLC | Albany, TX 76430 | Oil & Gas Operator | Oct 2025 |
| 9427 | Rod Oil & Gas LTD. | Houston, TX 77261 | Oil & Gas Operator | Jun 1995 |
| 9428 | Rod, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 9429 | Rodan, Inc. | Wink, TX 79789 | Oil & Gas Operator | Oct 2025 |
| 9430 | Rodel Oil & Gas Company | Houston, TX 77218 | Oil & Gas Operator | Oct 2025 |
| 9431 | Roden Oil Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 9432 | Rodenberg, Laura Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Oct 2025 |
| 9433 | Rodeo Resources, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
| 9434 | Rodessa Management, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 1995 |
| 9435 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Oct 2025 |
| 9436 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 9437 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 9438 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 9439 | Roemer, David E. | Somerset, TX 78069 | Oil Operator | Oct 2025 |
| 9440 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 9441 | Rog Enterprises, Inc. | Lake Dallas, TX 75065 | Oil Operator | May 2014 |
| 9442 | Rog Enterprises, LLC | Burkburnett, TX 76354 | Oil Operator | Oct 2025 |
| 9443 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Oct 2025 |
| 9444 | Rogers Oilfield Op, Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2019 |
| 9445 | Rogers, M. L. | Midland, TX 79701 | Oil & Gas Operator | Sep 2014 |
| 9446 | Rogers, Mike Drilling Co., Inc. | Magnolia, AR 71754 | Oil & Gas Operator | Sep 2002 |
| 9447 | Rogers, S. K. Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Oct 2025 |
| 9448 | Rohmer Brother'S | Muenster, TX 76252 | Oil & Gas Operator | May 2014 |
| 9449 | Rohmer Resources LP | Muenster, TX 76252 | Oil Operator | Oct 2025 |
| 9450 | Rohmer, A. J. | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 9451 | Rohmer, Tony S. | Muenster, TX 76252 | Oil & Gas Operator | Sep 2015 |
| 9452 | Rohmer, William J. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2011 |
| 9453 | Roil Mineral & Land Co. | Dallas, TX 75379 | Oil & Gas Operator | Oct 2025 |
| 9454 | Roil Production Company | Houston, TX 77056 | Gas Operator | Sep 2005 |
| 9455 | Rojo Burro Petroleo & Gas | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2007 |
| 9456 | Rojo Oil Company | McLean, TX 79057 | Oil & Gas Operator | Oct 2025 |
| 9457 | Roland Carlson LLC | Austin, TX 78705 | Gas Operator | Oct 2025 |
| 9458 | Roland Oil Company | Charlotte, TX 78011 | Oil & Gas Operator | Oct 2025 |
| 9459 | Rollert Co., Inc., The | Luling, TX 78648 | Oil & Gas Operator | Nov 2000 |
| 9460 | Rollo Resources, LLC | Granbury, TX 76049 | Gas Operator | Oct 2025 |
| 9461 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Oct 2025 |
| 9462 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Oct 2025 |
| 9463 | Romack Production Company | Granville, OH 43023 | Oil Operator | Mar 2018 |
| 9464 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 9465 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Oct 2025 |
| 9466 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 9467 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 9468 | Rominger, R.L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2015 |
| 9469 | Ronde Operating, LLC | Houston, TX 77006 | Oil & Gas Operator | Mar 2021 |
| 9470 | Ronning Gas And Oil LLC | Mesa, AZ 85203 | Oil & Gas Operator | Oct 2025 |
| 9471 | Roome Exploration Company | Bartlett, TX 76511 | Oil & Gas Operator | Mar 2008 |
| 9472 | Roome Oil Co. | Bartlett, TX 76511 | Oil & Gas Operator | Oct 2025 |
| 9473 | Roon Energy, Inc. | Dickinson, TX 77539 | Oil Operator | Oct 2025 |
| 9474 | Roosevelt Resources LP | Dallas, TX 75225 | Oil & Gas Operator | Oct 2025 |
| 9475 | Rooster Production, LLC | Oil City, LA 71061 | Oil Operator | Jan 2025 |
| 9476 | Roosth & Genecov Production Co. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2003 |
| 9477 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Oct 2025 |
| 9478 | Ropa Exploration Corp. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2011 |
| 9479 | Ropar Operating Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 9480 | Rorico Oil Company | Argyle, TX 76226 | Oil & Gas Operator | Oct 2025 |
| 9481 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 9482 | Rose City Resources, LLC | Tyler, TX 75703 | Oil & Gas Operator | Oct 2025 |
| 9483 | Rose Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Feb 2002 |
| 9484 | Rosehill Operating Company, LLC | Houston, TX 77084 | Oil & Gas Operator | Sep 2021 |
| 9485 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 9486 | Rosenthal, Stanley H. | Bay City, TX 77404 | Oil & Gas Operator | Dec 2020 |
| 9487 | Rosetta Energy Partners, L P | Dallas, TX 75219 | Oil & Gas Operator | Jul 2009 |
| 9488 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Oct 2025 |
| 9489 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Oct 2025 |
| 9490 | Roskydal, Laverne | La Vernia, TX 78121 | Oil Operator | Oct 2025 |
| 9491 | Rosner, S. | San Antonio, TX 78216 | Oil & Gas Operator | Aug 1996 |
| 9492 | Ross Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Oct 2025 |
| 9493 | Ross Exploration,Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2013 |
| 9494 | Ross Gas And Oil, LTD. Co. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Oct 2025 |
| 9495 | Ross Operating Company | Shreveport, LA 71163 | Oil & Gas Operator | May 1996 |
| 9496 | Ross Production Co. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 9497 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Oct 2025 |
| 9498 | Ross-Rippy | Tyler, TX 75702 | Oil & Gas Operator | Oct 2002 |
| 9499 | Rosson, Robert K. | Novice, TX 79538 | Oil & Gas Operator | Aug 2003 |
| 9500 | Roswell Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2019 |