| 1 | D H Hunt | Dallas, TX 75201 | Oil & Gas Operator | Dec 1994 |
| 2 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | Nov 2025 |
| 3 | D. K. Boyd Oil & Gas Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1999 |
| 4 | Dabb Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Aug 2020 |
| 5 | Dakota Resources, Inc | Midland, TX 79707 | Oil & Gas Operator | Jun 2025 |
| 6 | Dalen Resources Oil & Gas Co | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 7 | Dallas Production | Dallas, TX 75206 | Oil & Gas Operator | Sep 1996 |
| 8 | Dan C Berry | Eunice, NM 88231 | Oil Operator | Oct 1995 |
| 9 | Dan Strong Jr | Midland, TX 79702 | Oil & Gas Operator | Mar 1994 |
| 10 | Danny R Watson | Tatum, NM 88267 | Oil & Gas Operator | Nov 1997 |
| 11 | Danny R Watson Operating | Tatum, NM 88267 | Oil & Gas Operator | Nov 1997 |
| 12 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 13 | David H Arrington Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Sep 2025 |
| 14 | Devon Energy Operating Co., L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2009 |
| 15 | Devon Energy Production Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2015 |
| 16 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Nov 2025 |
| 17 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 18 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 19 | DGP Energy, LLC | Wilmington, DE 19801 | Oil & Gas Operator | Sep 2025 |
| 20 | Diamond S Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Nov 2025 |
| 21 | Diamondback Resources LLC | Midland, TX 79705 | Oil & Gas Operator | May 2018 |
| 22 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Nov 2025 |
| 23 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | Nov 2025 |
| 24 | DKD,LLC | Tatum, NM 88267 | Oil & Gas Operator | Oct 2022 |
| 25 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Aug 2025 |
| 26 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 27 | Don R Ormand | Midland, TX 79702 | Oil & Gas Operator | Jun 2014 |
| 28 | Douglas Oil & Gas LP | State College, PA 16803 | Oil & Gas Operator | Dec 2007 |
| 29 | Doyle Hartman | Midland, TX 79702 | Oil & Gas Operator | Nov 2005 |
| 30 | Draco Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Nov 2025 |
| 31 | Driftwood Oil, LLC | Jal, NM 88252 | Oil & Gas Operator | Sep 2025 |
| 32 | Drum Energy Corp | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 33 | Dugan Production Corp | Farmington, NM 87499 | Oil & Gas Operator | Aug 2025 |
| 34 | Duke Oil & Gas Inc | Colorado City, TX 79512 | Oil & Gas Operator | May 2003 |
| 35 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 36 | Dwight A Tipton | Lovington, NM 88260 | Oil & Gas Operator | Apr 2025 |
| 37 | Dwight Tipton Et Al | Hobbs, NM 88240 | Oil & Gas Operator | Nov 2002 |
| 38 | Dyad Petroleum Company | Midland, TX 79710 | Oil & Gas Operator | Sep 2021 |