| Company Name | Company Location | Company Type | Most Recent Production | |
|---|---|---|---|---|
| 1 | Eagle Creek Corporation | Andover, KS 67002 | Oil & Gas Operator | Jun 2025 |
| 2 | Eagle Exploration Co., Inc. | Amarillo, TX 79105 | Oil & Gas Operator | Dec 2019 |
| 3 | Echelon Land & Exploration Co. | Havana, FL 32333 | Oil Operator | Apr 1997 |
| 4 | Edison Operating Company LLC | Wichita, KS 67226 | Oil & Gas Operator | Jun 2025 |
| 5 | Edmiston Oil Com | Oil & Gas Operator | May 1994 | |
| 6 | Edmiston Oil Company, Inc. | Wichita, KS 67202 | Oil & Gas Operator | Jun 2025 |
| 7 | Elevate Energy LTD | Aurora, CO 80016 | Oil & Gas Operator | Jun 2025 |
| 8 | Energy Search Operating Company | Oil Operator | Dec 2009 | |
| 9 | Enterprise Inc | Hays, KS 67601 | Oil Operator | Sep 2015 |
| 10 | Eufaula Enterpri | Oil & Gas Operator | Mar 1986 |