Oil & Gas Companies in Niobrara County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Damson Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Mar 2005 |
| 2 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Dec 2024 |
| 3 | Davis Oil Company | Pawhuska, OK 74056 | Oil & Gas Operator | Jun 2018 |
| 4 | Davis Petroleum Corp. | Houston, TX 77027 | Oil & Gas Operator | Mar 2025 |
| 5 | Dekalb Energy Company | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 1996 |
| 6 | Deuel Arch W | | Oil & Gas Operator | Aug 1995 |
| 7 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 8 | Discovery Oil LTD | Los Angeles, CA 90067 | Oil & Gas Operator | Jan 1993 |
| 9 | DNR Oil And Gas, Inc. | Englewood, CO 80155 | Oil & Gas Operator | Jan 2025 |
| 10 | Dol Resources Inc | Rowlett, TX 75088 | Oil & Gas Operator | Feb 2025 |
Production numbers shown above are only for Niobrara County, WY and for the production period listed.