| 1 | R K Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | May 2024 |
| 2 | R. W. S. Oil Co. | Grandfalls, TX 79742 | Oil & Gas Operator | Nov 2025 |
| 3 | Radius Operating, LLC | Round Rock, TX 78664 | Oil & Gas Operator | Nov 2025 |
| 4 | Raider Oil & Gas Company | MC Camey, TX 79752 | Oil & Gas Operator | Nov 2025 |
| 5 | Ram Operating Inc. | Browns, IL 62818 | Oil & Gas Operator | Aug 2008 |
| 6 | Rangeland Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 2002 |
| 7 | Rasmussen, Hal J. Operating, Inc | Midland, TX 79701 | Oil & Gas Operator | Apr 2009 |
| 8 | Rasmussen, Tom | San Angelo, TX 76904 | Oil & Gas Operator | Nov 2025 |
| 9 | Rattler Midstream Operating LLC | Midland, TX 79701 | Oil Operator | Nov 2025 |
| 10 | Ray Oil Company | Dallas, TX 75370 | Oil Operator | Dec 1989 |
| 11 | Rayden | Midland, TX 79711 | Oil & Gas Operator | Nov 2025 |
| 12 | RBJ & Associates, LP | Midland, TX 79707 | Oil Operator | Jan 2020 |
| 13 | Reatta Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 14 | Recovery Operating LP | San Angelo, TX 76904 | Oil & Gas Operator | Nov 2025 |
| 15 | Red Oak Energy Co | San Angelo, TX 76906 | Oil & Gas Operator | Nov 2025 |
| 16 | Red Stag Energy, LLC | Ozona, TX 76943 | Oil & Gas Operator | Jan 2022 |
| 17 | Red Stag Operating, LLC | Ozona, TX 76943 | Oil & Gas Operator | Nov 2025 |
| 18 | Red Willow Production, LLC | Ignacio, CO 81137 | Oil & Gas Operator | Oct 2015 |
| 19 | Reeves County Systems, Inc. | Odessa, TX 79760 | Oil & Gas Operator | Aug 2019 |
| 20 | Regent Oil & Gas Company, L.P. | Dallas, TX 75225 | Oil & Gas Operator | Sep 2006 |
| 21 | Rein Pusher Operating LLC | Brenham, TX 77834 | Oil & Gas Operator | Nov 2025 |
| 22 | Remnant Oil Operating, LLC | Midland, TX 79704 | Oil & Gas Operator | Jul 2024 |
| 23 | Remuda Operating Company | Midland, TX 79711 | Oil & Gas Operator | Nov 2025 |
| 24 | Reo Operating LLC | Austin, TX 78747 | Oil & Gas Operator | Nov 2025 |
| 25 | Resaca Operating Company | Houston, TX 77010 | Oil & Gas Operator | Sep 2013 |
| 26 | Rhombus Operating Co., LTD | Littleton, CO 80160 | Oil & Gas Operator | Jun 2025 |
| 27 | Richardson Operating Company | Denver, CO 80237 | Oil & Gas Operator | Aug 2025 |
| 28 | Richardson, Bud II | Graham, TX 76450 | Oil & Gas Operator | Nov 2025 |
| 29 | Ring Energy, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 30 | Rki Exploration & Production LLC | Tulsa, OK 74172 | Oil & Gas Operator | Nov 2025 |
| 31 | RMB Operating LLC | Lubbock, TX 79493 | Oil & Gas Operator | Nov 2025 |
| 32 | Robertson Resources, Inc. | Horseshoe Bay, TX 78657 | Oil & Gas Operator | Nov 2025 |
| 33 | Roca Operating, Inc. | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 34 | Roca Resource Company, Inc. | Midland, TX 79702 | Oil & Gas Operator | Mar 2008 |
| 35 | Rodan, Inc. | Wink, TX 79789 | Oil & Gas Operator | Nov 2025 |
| 36 | Rubicon Oil & Gas, LLC | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |