| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Eagle Exploratio | Oil & Gas Operator | Oct 1991 | |
| 2 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 3 | Elendil Resources LLC | Pampa, TX 79066 | Oil & Gas Operator | Oct 2025 |
| 4 | Empire Energy E&P, LLC | Mayville, NY 14757 | Oil & Gas Operator | Mar 2019 |
| 5 | Energy Explorati | Oil & Gas Operator | Oct 1993 | |
| 6 | Energyquest II, LLC | The Woodlands, TX 77381 | Oil & Gas Operator | Jun 2025 |
| 7 | Enterprise Marke | Oil & Gas Operator | Oct 1992 | |
| 8 | Excalibur Prod C | Oil & Gas Operator | Jun 1995 | |
| 9 | Excalibur Production Company, Inc. | McPherson, KS 67460 | Oil & Gas Operator | Jun 2025 |