Oil & Gas Companies in Niobrara County, WY
| Company Name | Company Location | Company Type | Most Recent Production |
|---|
| 1 | Balidor Oil & Gas LLC | Houston, TX 77070 | Oil & Gas Operator | Oct 2021 |
| 2 | Baytex Energy USA LLC | Denver, CO 80202 | Oil & Gas Operator | Nov 2014 |
| 3 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 4 | BHP Petroleum (USA) Inc | | Oil & Gas Operator | Mar 1993 |
| 5 | Black Bear Oil Corporation | Las Vegas, NV 89128 | Oil & Gas Operator | Aug 2025 |
| 6 | Black Hills Exploration & Production Inc | Newcastle, WY 82701 | Oil & Gas Operator | May 2018 |
| 7 | Boggy Creek Production | Newcastle, WY 82701 | Oil & Gas Operator | Apr 2012 |
| 8 | Bradley Jr Jack C | Casper, WY 82601 | Oil & Gas Operator | Apr 2009 |
| 9 | Bradley SR Jack C | Newcastle, WY 82701 | Oil Operator | Jun 2010 |
| 10 | Breitburn Operating LP | Houston, TX 77002 | Oil & Gas Operator | Oct 2025 |
| 11 | Brent Exploration | | Oil & Gas Operator | Dec 1993 |
| 12 | Brigham Oil & Gas, L.P. | Austin, TX 78730 | Oil & Gas Operator | Oct 2015 |
| 13 | Brown & Bickerstaff | | Oil & Gas Operator | Oct 1991 |
| 14 | Buck Creek Freight Inc | Lusk, WY 82225 | Oil Operator | Aug 2025 |
| 15 | Bullock A O | Casper, WY 82604 | Oil & Gas Operator | Jul 2025 |
| 16 | Bullock Gladys C Trust | | Oil & Gas Operator | Dec 1999 |
| 17 | Burlington Resources Oil & Gas Company L | Gillette, WY 82718 | Oil & Gas Operator | Jan 2022 |
| 18 | BW Oil LLC | Hamel, MN 55340 | Oil Operator | Jun 2015 |
| 19 | Bwab Incorporated | Denver, CO 80202 | Oil & Gas Operator | Aug 1996 |
Production numbers shown above are only for Niobrara County, WY and for the production period listed.