| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | R & C Petroleum, Inc. | Flint, TX 75762 | Oil & Gas Operator | Mar 2025 |
| 2 | R. A. Campbell Company | Oil & Gas Operator | Nov 1995 | |
| 3 | R.A. Campbell & Dale Expl | Oil Operator | Nov 1995 | |
| 4 | Rabb Contracting Company, L.L.C. | Oil Operator | Nov 2024 | |
| 5 | Radzewicz & Assoc-R.C.Bertolet | Oil Operator | Oct 1985 | |
| 6 | Ramrod Prod. Co., Inc. | Oil Operator | Feb 2024 | |
| 7 | Ray Estis | Oil Operator | Dec 2024 | |
| 8 | Rbi, Inc. | Oil Operator | Dec 1984 | |
| 9 | Realco Oil & Gas, Inc. | Oil & Gas Operator | Sep 2007 | |
| 10 | Reliance Trusts | Dallas, TX 75244 | Oil & Gas Operator | Nov 1995 |
| 11 | Ricks & Ricks Oil Producers | Oil Operator | Sep 1983 | |
| 12 | Risher Company, Inc. | Oil & Gas Operator | Jul 2001 | |
| 13 | Ross Prod. - Zwahlen & Raish | Oil & Gas Operator | Sep 1998 | |
| 14 | Ross Production Co. | Shreveport, LA 71101 | Oil & Gas Operator | Mar 2000 |