| 9501 | Rocksprings Energy Company LLC | Houston, TX 77057 | Oil & Gas Operator | Dec 1997 |
| 9502 | Rockstar Production, LLC | Graham, TX 76450 | Oil Operator | Apr 2025 |
| 9503 | Rockstar Resources, LLC | Sourlake, TX 77659 | Oil & Gas Operator | Apr 2025 |
| 9504 | Rockwall Marketing Corporation | Benbrook, TX 76126 | Oil & Gas Operator | Dec 2007 |
| 9505 | Rockwell Energy Corporation | Tulsa, OK 74105 | Oil & Gas Operator | Apr 2014 |
| 9506 | Rockwell Energy, LLC | Spring, TX 77386 | Oil & Gas Operator | Sep 2014 |
| 9507 | Rockwood Resources Inc | Coleman, TX 76834 | Oil & Gas Operator | Apr 2025 |
| 9508 | Rocky Creek Resources, LLC | Houston, TX 77055 | Oil & Gas Operator | Apr 2025 |
| 9509 | Rocky Point Oil, Inc. | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 9510 | Roco Petroleum, Incorporated | Abilene, TX 79605 | Oil & Gas Operator | Apr 2025 |
| 9511 | Rocoso Resources, LLC | Albany, TX 76430 | Oil & Gas Operator | Apr 2025 |
| 9512 | Rod Oil & Gas LTD. | Houston, TX 77261 | Oil & Gas Operator | Jun 1995 |
| 9513 | Rod, Inc. | Coleman, TX 76834 | Oil & Gas Operator | Mar 2008 |
| 9514 | Rodan, Inc. | Wink, TX 79789 | Oil & Gas Operator | Apr 2025 |
| 9515 | Rodel Oil & Gas Company | Houston, TX 77218 | Oil & Gas Operator | Apr 2025 |
| 9516 | Roden Oil Company | Midland, TX 79702 | Oil & Gas Operator | Feb 2008 |
| 9517 | Rodenberg, Laura Oil Co. | Luling, TX 78648 | Oil & Gas Operator | Apr 2025 |
| 9518 | Rodeo Resources, L.L.C. | Houston, TX 77079 | Oil & Gas Operator | Dec 2024 |
| 9519 | Rodessa Management, Inc. | Longview, TX 75606 | Oil & Gas Operator | May 1995 |
| 9520 | Rodessa Operating Company | Corpus Chrsti, TX 78426 | Oil & Gas Operator | Apr 2025 |
| 9521 | Rodgers, William L. | Fort Worth, TX 76147 | Oil & Gas Operator | Jan 1995 |
| 9522 | Rodman Petroleum Corp. | Odessa, TX 79768 | Oil & Gas Operator | Jul 2023 |
| 9523 | Roemer Oil Company | Denver, CO 80202 | Oil & Gas Operator | Nov 1998 |
| 9524 | Roemer, David E. | Somerset, TX 78069 | Oil Operator | Apr 2025 |
| 9525 | Roff Operating Company LLC | Houston, TX 77002 | Oil & Gas Operator | Apr 2025 |
| 9526 | Rog Enterprises, Inc. | Lake Dallas, TX 75065 | Oil Operator | May 2014 |
| 9527 | Rog Enterprises, LLC | Burkburnett, TX 76354 | Oil Operator | Apr 2025 |
| 9528 | Roger W. McCabe, Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 2025 |
| 9529 | Rogers Drilling Co. | Olney, TX 76374 | Oil & Gas Operator | Apr 2025 |
| 9530 | Rogers Oilfield Op, Corp. | Granbury, TX 76048 | Oil & Gas Operator | Jul 2019 |
| 9531 | Rogers, M. L. | Midland, TX 79701 | Oil & Gas Operator | Sep 2014 |
| 9532 | Rogers, Mike Drilling Co., Inc. | Magnolia, AR 71754 | Oil & Gas Operator | Sep 2002 |
| 9533 | Rogers, S. K. Oil, Inc. | Lubbock, TX 79424 | Oil & Gas Operator | Apr 2025 |
| 9534 | Rohmer Brother'S | Muenster, TX 76252 | Oil & Gas Operator | May 2014 |
| 9535 | Rohmer Resources LP | Muenster, TX 76252 | Oil Operator | Apr 2025 |
| 9536 | Rohmer, A. J. | Muenster, TX 76252 | Oil & Gas Operator | Apr 1997 |
| 9537 | Rohmer, Tony S. | Muenster, TX 76252 | Oil & Gas Operator | Sep 2015 |
| 9538 | Rohmer, William J. | Muenster, TX 76252 | Oil & Gas Operator | Dec 2011 |
| 9539 | Roil Mineral & Land Co. | Dallas, TX 75379 | Oil & Gas Operator | Apr 2025 |
| 9540 | Roil Production Company | Houston, TX 77056 | Gas Operator | Sep 2005 |
| 9541 | Rojo Burro Petroleo & Gas | Kilgore, TX 75662 | Oil & Gas Operator | Aug 2007 |
| 9542 | Rojo Oil Company | McLean, TX 79057 | Oil & Gas Operator | Apr 2025 |
| 9543 | Roland Carlson LLC | Austin, TX 78705 | Gas Operator | Apr 2025 |
| 9544 | Roland Oil Company | Charlotte, TX 78011 | Oil & Gas Operator | Apr 2025 |
| 9545 | Rollert Co., Inc., The | Luling, TX 78648 | Oil & Gas Operator | Nov 2000 |
| 9546 | Rollo Resources, LLC | Granbury, TX 76049 | Gas Operator | Apr 2025 |
| 9547 | Roma Oil And Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Apr 2025 |
| 9548 | Romac Oil Company, Inc. | Throckmorton, TX 76483 | Oil & Gas Operator | Apr 2025 |
| 9549 | Romack Production Company | Granville, OH 43023 | Oil Operator | Mar 2018 |
| 9550 | Romco | Muenster, TX 76252 | Oil & Gas Operator | Mar 2015 |
| 9551 | Romine Oil & Gas, LLC | Midland, TX 79710 | Oil & Gas Operator | Apr 2025 |
| 9552 | Romines & Warner | Pampa, TX 79065 | Oil & Gas Operator | Jan 2002 |
| 9553 | Romines Operating Group | Pampa, TX 79066 | Oil & Gas Operator | Nov 2022 |
| 9554 | Rominger, R.L. | Wichita Falls, TX 76307 | Oil & Gas Operator | Jan 2015 |
| 9555 | Ronde Operating, LLC | Houston, TX 77006 | Oil & Gas Operator | Mar 2021 |
| 9556 | Ronning Gas And Oil LLC | Mesa, AZ 85203 | Oil & Gas Operator | Apr 2025 |
| 9557 | Roome Exploration Company | Bartlett, TX 76511 | Oil & Gas Operator | Mar 2008 |
| 9558 | Roome Oil Co. | Bartlett, TX 76511 | Oil & Gas Operator | Apr 2025 |
| 9559 | Roon Energy, Inc. | Dickinson, TX 77539 | Oil Operator | Apr 2025 |
| 9560 | Roosevelt Resources LP | Dallas, TX 75225 | Oil & Gas Operator | Apr 2025 |
| 9561 | Rooster Production, LLC | Oil City, LA 71061 | Oil Operator | Jan 2025 |
| 9562 | Roosth & Genecov Production Co. | Tyler, TX 75710 | Oil & Gas Operator | Aug 2003 |
| 9563 | Roosth Production Co. | Tyler, TX 75711 | Oil & Gas Operator | Apr 2025 |
| 9564 | Ropa Exploration Corp. | Fort Worth, TX 76102 | Oil & Gas Operator | Apr 2011 |
| 9565 | Ropar Operating Co. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 9566 | Rorico Oil Company | Argyle, TX 76226 | Oil & Gas Operator | Apr 2025 |
| 9567 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 9568 | Rose City Resources, LLC | Tyler, TX 75703 | Oil & Gas Operator | Apr 2025 |
| 9569 | Rose Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Feb 2002 |
| 9570 | Rosehill Operating Company, LLC | Houston, TX 77084 | Oil & Gas Operator | Sep 2021 |
| 9571 | Roseland Oil & Gas Inc | Rockwall, TX 75087 | Oil & Gas Operator | Feb 2003 |
| 9572 | Rosenthal, Stanley H. | Bay City, TX 77404 | Oil & Gas Operator | Dec 2020 |
| 9573 | Rosetta Energy Partners, L P | Dallas, TX 75219 | Oil & Gas Operator | Jul 2009 |
| 9574 | Rosetta Resources Operating LP | San Antonio, TX 78216 | Oil & Gas Operator | Apr 2025 |
| 9575 | Rosewood Resources, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Apr 2025 |
| 9576 | Roskydal, Laverne | La Vernia, TX 78121 | Oil Operator | Apr 2025 |
| 9577 | Rosner, S. | San Antonio, TX 78216 | Oil & Gas Operator | Aug 1996 |
| 9578 | Ross Engineering, Inc. | Abilene, TX 79601 | Oil & Gas Operator | Apr 2025 |
| 9579 | Ross Exploration,Inc. | Fort Worth, TX 76102 | Oil & Gas Operator | Jul 2013 |
| 9580 | Ross Gas And Oil, LTD. Co. | Dripping SPGS, TX 78620 | Oil & Gas Operator | Apr 2025 |
| 9581 | Ross Operating Company | Shreveport, LA 71163 | Oil & Gas Operator | May 1996 |
| 9582 | Ross Production Co. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |
| 9583 | Ross, Dwight M. DRLG. Co., Inc. | Wichita Falls, TX 76301 | Oil & Gas Operator | Apr 2025 |
| 9584 | Ross-Rippy | Tyler, TX 75702 | Oil & Gas Operator | Oct 2002 |
| 9585 | Rosson, Robert K. | Novice, TX 79538 | Oil & Gas Operator | Aug 2003 |
| 9586 | Roswell Operating, LLC | Midland, TX 79702 | Oil & Gas Operator | Oct 2019 |
| 9587 | Rotation, Incorporated | Houston, TX 77057 | Oil & Gas Operator | Mar 2023 |
| 9588 | Rough Creek Exploration, Inc. | Santa Anna, TX 76878 | Oil & Gas Operator | Jan 1996 |
| 9589 | Rough Hollow Ranch Corporation | Dallas, TX 75209 | Oil Operator | Aug 2006 |
| 9590 | Roule Production Company | Bay City, TX 77414 | Oil & Gas Operator | Feb 1997 |
| 9591 | Round Rock Resources, Inc. | College Sta, TX 77845 | Oil & Gas Operator | Sep 2012 |
| 9592 | Routh Operating, LLC | Dallas, TX 75204 | Oil & Gas Operator | Mar 2011 |
| 9593 | Rover Operating Company, LLC | Wichita Falls, TX 76308 | Oil & Gas Operator | Apr 2025 |
| 9594 | Rover Operating Inc | Richardson, TX 75080 | Oil & Gas Operator | Apr 2000 |
| 9595 | Rover Petroleum Operating, LLC | Plano, TX 75075 | Oil & Gas Operator | Apr 2025 |
| 9596 | Rowan, Al | Van, TX 75790 | Oil & Gas Operator | Apr 2021 |
| 9597 | Rowan-Ungerecht, Inc. | Van, TX 75790 | Oil & Gas Operator | Sep 1993 |
| 9598 | Rowden Oil & Gas, Inc. | San Antonio, TX 78209 | Oil & Gas Operator | Jun 2023 |
| 9599 | Rowland Tank Truck Company | Sherman, TX 75090 | Oil & Gas Operator | Apr 2025 |
| 9600 | Rowland, Rex D. | Midland, TX 79701 | Oil & Gas Operator | Dec 2017 |