| 1 | B & H Oil Company | Oklahoma City, OK 73108 | Oil & Gas Operator | Jan 2025 |
| 2 | B And G Production, Inc. | Woodward, OK 73801 | Oil & Gas Operator | Dec 2025 |
| 3 | Baruch Foster Corporation | Oklahoma City, OK 73126-6770 | Oil & Gas Operator | Feb 2001 |
| 4 | BC Operating, Inc. | Midland, TX 79710 | Oil & Gas Operator | Dec 2025 |
| 5 | Bce-Mach II LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 6 | Bce-Mach III LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Dec 2025 |
| 7 | Bce-Mach LLC | Oklahoma City, OK 73134 | Oil & Gas Operator | Oct 2025 |
| 8 | Beard Oil Company | Oklahoma City, OK 73102 | Oil & Gas Operator | Aug 2013 |
| 9 | Beasley Oil Company | Oklahoma City, OK 73120 | Oil & Gas Operator | Jun 2020 |
| 10 | Beck Pump & Supply Inc | Hennessey, OK 73742-0175 | Oil & Gas Operator | Nov 2019 |
| 11 | Beck Resources Incorporated | Hennessey, OK 73742 | Oil & Gas Operator | Oct 2025 |
| 12 | Belco Energy Corp. | Dallas, TX 75231 | Oil & Gas Operator | Mar 2015 |
| 13 | Bell & Kinley Company LLC | Piedmont, OK 73078-8918 | Oil & Gas Operator | Jul 2021 |
| 14 | Bellwether Exploration Company | Houston, TX 77010 | Oil & Gas Operator | May 2001 |
| 15 | Benson Mineral Group, Inc. | Denver, CO 80202 | Oil & Gas Operator | Apr 2022 |
| 16 | Berexco LLC | Wichita, KS 67206 | Oil & Gas Operator | Dec 2025 |
| 17 | Bettis, Boyle & Stovall | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 18 | Betty L Wood Dba Able Oil Company | Morris, OK 74445-2303 | Oil & Gas Operator | Sep 2025 |
| 19 | Bevo Production Co. | Amarillo, TX 79101 | Oil & Gas Operator | Dec 2014 |
| 20 | BHP Petroleum (Americas) Inc | Houston, TX 77056 | Oil & Gas Operator | Mar 2015 |
| 21 | Big Creek Energy LLC | Kingfisher, OK 73750-3102 | Oil & Gas Operator | Oct 2025 |
| 22 | Big Lime Energy LTD | Medford, OK 73759-0009 | Oil & Gas Operator | Mar 2015 |
| 23 | Black Aubrey C | Dallas, TX 75206 | Oil & Gas Operator | Nov 2002 |
| 24 | Blackfire Operating LLC | Oklahoma City, OK 73116-4223 | Oil & Gas Operator | Oct 2025 |
| 25 | Blackhawk Oil Co | Ottawa, KS 66067 | Oil & Gas Operator | Jan 2011 |
| 26 | Bluebonnet Oil Corporation | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Oct 2025 |
| 27 | Bluebonnet Oil LLC | Oklahoma City, OK 73162-6249 | Oil & Gas Operator | Oct 2025 |
| 28 | Bluemark Energy, LLC | Tulsa, OK 74135 | Oil & Gas Operator | Sep 2025 |
| 29 | BMR II LLC | Evergreen, CO 80439 | Oil & Gas Operator | Jan 2023 |
| 30 | Bob & Son Oil Company | Hennessey, OK 73742-0578 | Oil & Gas Operator | Jul 2017 |
| 31 | Bogo Energy Corporation | Oklahoma City, OK 73134-1002 | Oil & Gas Operator | Oct 2025 |
| 32 | Bostick Services Corporation | Crescent, OK 73028 | Oil & Gas Operator | Oct 2025 |
| 33 | BP America Production Company | Denver, CO 80202 | Oil & Gas Operator | Oct 2025 |
| 34 | BP Explorationinc/Ofb See #17756 | | Oil & Gas Operator | Apr 2015 |
| 35 | Bracken Operating, L.L.C. | Perryton, TX 79070 | Oil & Gas Operator | Dec 2025 |
| 36 | Bracksieck Lloyd H | Boulder, CO 80303 | Oil & Gas Operator | Feb 2019 |
| 37 | Bradmar Petroleum Corporation | Oklahoma City, OK 73114 | Oil & Gas Operator | Mar 2015 |
| 38 | Branson Production Company | Oklahoma City, OK 73123-1323 | Oil & Gas Operator | Aug 2002 |
| 39 | BRG Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Mar 2020 |
| 40 | BRG Petroleum LLC | Tulsa, OK 74136 | Oil & Gas Operator | Oct 2025 |
| 41 | BRG Petroleum, Inc. | Tulsa, OK 74136 | Oil & Gas Operator | Nov 2020 |
| 42 | BRG Production Company | Tulsa, OK 74136-6338 | Oil & Gas Operator | Oct 2025 |
| 43 | Bridge Oil Company LP | Midland, TX 79702 | Oil & Gas Operator | May 1999 |
| 44 | Brighton Energy, L.L.C. | Tulsa, OK 74170 | Oil & Gas Operator | Mar 2015 |
| 45 | Briscoe Oil Operating Co., Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Mar 2015 |
| 46 | Bristol Resources Corporation | Tulsa, OK 74170 | Oil & Gas Operator | Feb 2022 |
| 47 | Brock Oil & Gas Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Jun 2019 |
| 48 | Bromar Oil Company | Fairview, OK 73737-0006 | Oil & Gas Operator | Apr 2014 |
| 49 | Brower, Robert C. | Fort Worth, TX 76116 | Oil & Gas Operator | Dec 2025 |
| 50 | Brown & Borelli, Inc. | Kingfisher, OK 73750 | Oil & Gas Operator | Dec 2025 |
| 51 | Brunsteter Dick Oil & Gas Inc | Alva, OK 73717-0068 | Oil & Gas Operator | Jul 2006 |
| 52 | BS&W Solutions LLC | | Oil Operator | Jun 2014 |
| 53 | Buffco Production, Inc. | Longview, TX 75606 | Oil & Gas Operator | Dec 2025 |
| 54 | Burk Royalty Co., LTD. | Wichita Falls, TX 76308 | Oil & Gas Operator | Dec 2025 |
| 55 | Burkhart Petroleum Corporation | Tulsa, OK 74136 | Oil & Gas Operator | Feb 2002 |
| 56 | Burlington Resources Oil & Gas Company LP | Houston, TX 77252 | Oil & Gas Operator | Dec 2025 |
| 57 | Burnett Oil Co Inc | Fort Worth, TX 76102 | Oil & Gas Operator | Dec 2025 |
| 58 | Buttonwood Petroleum Inc | Tulsa, OK 74136-4234 | Oil & Gas Operator | Jan 2014 |