| 1 | Rabalais Oil And Gas, Inc. | | Oil & Gas Operator | Sep 2023 |
| 2 | Rabwin Oil & Gas, Inc. | | Oil & Gas Operator | Nov 1991 |
| 3 | Range Louisiana Operating, LLC | | Oil & Gas Operator | Aug 2020 |
| 4 | Reeder Production | | Oil Operator | Oct 2005 |
| 5 | Regency Field Services LLC | Dallas, TX 75201 | Oil Operator | Jul 2017 |
| 6 | Regency Gas Gathrng & Proc LLC | | Oil Operator | Sep 2007 |
| 7 | Reliance Energy, L.L.C. | | Oil & Gas Operator | Dec 2023 |
| 8 | Reliance Well Service, Inc. | | Oil & Gas Operator | Apr 1997 |
| 9 | Reliant Energy Field SVS Inc. | | Oil Operator | Sep 2002 |
| 10 | Reserve Oil Inc. | | Oil & Gas Operator | Jan 1980 |
| 11 | Reynolds Drill Coinc/Rosbottom | | Oil & Gas Operator | Jan 1990 |
| 12 | Reynolds Drilling Co., Inc. | Shreveport, LA 71105 | Oil & Gas Operator | May 2024 |
| 13 | Reynolds E & P, Inc. | Shreveport, LA 71105 | Oil & Gas Operator | May 2024 |
| 14 | Rigel Resources Co., Inc. | | Oil Operator | Aug 2009 |
| 15 | Riverstone Energy Operating, LLC | Houston, TX 77090 | Oil & Gas Operator | May 2024 |
| 16 | Rosbottom Production Corp | Shreveport, LA 71134 | Oil & Gas Operator | Dec 2017 |
| 17 | Rosestone Operating Company, LLC | | Oil & Gas Operator | Dec 2023 |
| 18 | Rudman Resources, Inc. | | Oil Operator | Jul 1981 |
| 19 | Rusk Energy Management, LLC | Houston, TX 77002 | Oil & Gas Operator | Feb 2008 |