| 9401 | Rodessa Management, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 1995 |
| 9402 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Apr 2026 |
| 9403 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 9404 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 9405 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 9406 | Roemer, David E. | Somerset, TX 78069 | Oil Operator | Apr 2026 |
| 9407 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2026 |
| 9408 | Rog Enterprises, Inc. | Lake Dallas, TX 75065 | Oil Operator | May 2014 |
| 9409 | Rog Enterprises, LLC | Burkburnett, TX 76354 | Oil Operator | Apr 2026 |
| 9410 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Apr 2026 |
| 9411 | Rogers Oilfield Op, Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2019 |
| 9412 | Rogers, M. L. | Midland, TX 79701 | Oil & Gas Operator | Sep 2014 |
| 9413 | Rogers, Mike Drilling Co., Inc. | Magnolia, AR 71754 | Oil & Gas Operator | Sep 2002 |
| 9414 | Rogers, S. K. Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2026 |
| 9415 | Rohmer Brother'S | Muenster, TX 76252 | Oil & Gas Operator | May 2014 |
| 9416 | Rohmer Resources LP | Muenster, TX 76252 | Oil Operator | Apr 2026 |
| 9417 | Rohmer, A. J. | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 9418 | Rohmer, Tony S. | Muenster, TX 76252 | Oil & Gas Operator | Sep 2015 |
| 9419 | Rohmer, William J. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2011 |
| 9420 | Roil Mineral & Land Co. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2026 |
| 9421 | Roil Production Company | Houston, TX 77056 | Gas Operator | Sep 2005 |
| 9422 | Rojo Burro Petroleo & Gas | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2007 |
| 9423 | Rojo Oil Company | McLean, TX 79057 | Oil & Gas Operator | Apr 2026 |
| 9424 | Roland Carlson LLC | Austin, TX 78705 | Gas Operator | Apr 2026 |
| 9425 | Roland Oil Company | Charlotte, TX 78011 | Oil & Gas Operator | Apr 2026 |
| 9426 | Rollert Co., Inc., The | Luling, TX 78648 | Oil & Gas Operator | Nov 2000 |
| 9427 | Rolling Hills Oil & Gas, Inc | Austin, TX 78731 | Oil & Gas Operator | Apr 2026 |
| 9428 | Rollo Resources, LLC | Granbury, TX 76049 | Gas Operator | Apr 2026 |
| 9429 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2026 |
| 9430 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Apr 2026 |
| 9431 | Romack Production Company | Granville, OH 43023 | Oil Operator | Mar 2018 |
| 9432 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 9433 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 9434 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 9435 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 9436 | Rominger, R.L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2015 |
| 9437 | Ronde Operating, LLC | Houston, TX 77006 | Oil & Gas Operator | Mar 2021 |
| 9438 | Ronning Gas And Oil LLC | Mesa, AZ 85203 | Oil & Gas Operator | Apr 2026 |
| 9439 | Roome Exploration Company | Bartlett, TX 76511 | Oil & Gas Operator | Mar 2008 |
| 9440 | Roome Oil Co. | Bartlett, TX 76511 | Oil & Gas Operator | Apr 2026 |
| 9441 | Roon Energy, Inc. | Boones Mill, VA 24065 | Oil Operator | Apr 2026 |
| 9442 | Roosevelt Resources LP | Dallas, TX 75225 | Oil & Gas Operator | Apr 2026 |
| 9443 | Rooster Production, LLC | Oil City, LA 71061 | Oil Operator | Jan 2025 |
| 9444 | Roosth & Genecov Production Co. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2003 |
| 9445 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2026 |
| 9446 | Ropa Exploration Corp. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2011 |
| 9447 | Ropar Operating Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2026 |
| 9448 | Rorico Oil Company | Argyle, TX 76226 | Oil & Gas Operator | Apr 2026 |
| 9449 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 9450 | Rose City Resources, LLC | Tyler, TX 75703 | Oil & Gas Operator | Apr 2026 |
| 9451 | Rose Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Feb 2002 |
| 9452 | Rosehill Operating Company, LLC | Houston, TX 77084 | Oil & Gas Operator | Sep 2021 |
| 9453 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 9454 | Rosenthal, Stanley H. | Bay City, TX 77404 | Oil & Gas Operator | Dec 2020 |
| 9455 | Rosetta Energy Partners, L P | Dallas, TX 75219 | Oil & Gas Operator | Jul 2009 |
| 9456 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Apr 2026 |
| 9457 | Rosewood Resources Inc | Dallas, TX 75201 | Oil & Gas Operator | Apr 2026 |
| 9458 | Roskydal, Laverne | La Vernia, TX 78121 | Oil Operator | Apr 2026 |
| 9459 | Rosner, S. | San Antonio, TX 78216 | Oil & Gas Operator | Aug 1996 |
| 9460 | Ross Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Apr 2026 |
| 9461 | Ross Exploration,Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2013 |
| 9462 | Ross Gas And Oil, LTD. Co. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Apr 2026 |
| 9463 | Ross Operating Company | Shreveport, LA 71163 | Oil & Gas Operator | May 1996 |
| 9464 | Ross Production Co. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 9465 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2026 |
| 9466 | Ross-Rippy | Tyler, TX 75702 | Oil & Gas Operator | Oct 2002 |
| 9467 | Rosson, Robert K. | Novice, TX 79538 | Oil & Gas Operator | Aug 2003 |
| 9468 | Roswell Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2019 |
| 9469 | Rotation, Incorporated | Houston, TX 77057 | Oil & Gas Operator | Mar 2023 |
| 9470 | Rough Creek Exploration, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Jan 1996 |
| 9471 | Rough Hollow Ranch Corporation | Dallas, TX 75209 | Oil Operator | Aug 2006 |
| 9472 | Roule Production Company | Bay City, TX 77414 | Oil & Gas Operator | Feb 1997 |
| 9473 | Round Rock Resources, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Sep 2012 |
| 9474 | Routh Operating, LLC | Dallas, TX 75204 | Oil & Gas Operator | Mar 2011 |
| 9475 | Rover Operating Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2026 |
| 9476 | Rover Operating Inc | Richardson, TX 75080 | Oil & Gas Operator | Apr 2000 |
| 9477 | Rover Petroleum Operating, LLC | Fort Worth, TX 76101 | Oil & Gas Operator | Apr 2026 |
| 9478 | Rowan, Al | Van, TX 75790 | Oil & Gas Operator | Apr 2021 |
| 9479 | Rowan-Ungerecht, Inc. | Van, TX 75790 | Oil & Gas Operator | Sep 1993 |
| 9480 | Rowden Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2023 |
| 9481 | Rowland Tank Truck Company | Whitewright, TX 75491 | Oil & Gas Operator | Apr 2026 |
| 9482 | Rowland, Rex D. | Midland, TX 79701 | Oil & Gas Operator | Dec 2017 |
| 9483 | Rowland, Rex D. Estate Of | Midland, TX 79705 | Oil & Gas Operator | Apr 2026 |
| 9484 | Rox Exploration Inc | Norman, OK 73069-6301 | Oil & Gas Operator | Feb 2026 |
| 9485 | Roxanna Oil Company | Oklahoma City, OK 73120-2717 | Oil Operator | Aug 2016 |
| 9486 | Roxi Production | Pampa, TX 79065 | Oil & Gas Operator | Apr 2026 |
| 9487 | Roy Jackson Energy Operating, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2026 |
| 9488 | Roy Production Co. | Shamrock, TX 79079 | Oil & Gas Operator | Jul 2012 |
| 9489 | Royal American Oil & Gas | Post, TX 79356 | Oil & Gas Operator | Jan 2019 |
| 9490 | Royal Oil & Gas Corp. | Indiana, PA 15701 | Oil & Gas Operator | Apr 2014 |
| 9491 | Royal Oil LTD. Co. | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 9492 | Royal Oryx Og LLC | Graham, TX 76450 | Oil & Gas Operator | Apr 2026 |
| 9493 | Royal Petroleum | Baytown, TX 77521 | Oil & Gas Operator | Aug 2003 |
| 9494 | Royal Petroleum Co. | Iowa Park, TX 76367 | Oil & Gas Operator | Apr 2026 |
| 9495 | Royal Petroleum Corp. | Dallas, TX 75229 | Oil & Gas Operator | Jan 2025 |
| 9496 | Royal Production Company, Inc. | Corpus Christ, TX 78401 | Oil & Gas Operator | Apr 2026 |
| 9497 | Royal Seahorse Developments Inc | San Antonio, TX 78209 | Oil & Gas Operator | Oct 1994 |
| 9498 | Royal Texan Energy Co. | Irvine, CA 92618 | Oil & Gas Operator | Apr 2026 |
| 9499 | Royal Texan Resources Co. | Breckenridge, TX 76424 | Oil & Gas Operator | Apr 2026 |
| 9500 | Royal Texas Petroleum | Lago VIsta, TX 78645 | Oil & Gas Operator | Apr 2026 |