| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | P. K. Smith | Oil Operator | Mar 1997 | |
| 2 | Pentagon Exploration | Oil & Gas Operator | Dec 1991 | |
| 3 | Petro-Chem Operating Company, Inc. | Shreveport, LA 71101 | Oil & Gas Operator | Feb 2026 |
| 4 | Phoenix Operating Company, Inc. | Shreveport, LA 71161 | Oil & Gas Operator | Mar 2015 |
| 5 | Phoenix Opr Co Inc-DS DRLG | Oil Operator | May 1994 | |
| 6 | Phoenix Opr Co Inc-La Petro As | Oil Operator | Dec 1992 | |
| 7 | Phoenix Opr Co Inc-Lex 83 | Oil Operator | Feb 1993 | |
| 8 | Primary Energy Co. | Gas Operator | Jul 1999 |