| 1 | D E Energy LTD | Midland, TX 79701 | Oil & Gas Operator | Jun 1995 |
| 2 | Dakota Resources, Inc | Midland, TX 79707 | Oil & Gas Operator | Nov 2024 |
| 3 | Dalen Resources Oil & Gas Co. | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 4 | David G Hammond | Artesia, NM 88211 | Oil Operator | May 2013 |
| 5 | David H Arrington Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Feb 2025 |
| 6 | Delta Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 7 | Dennis Langlitz | Carlsbad, NM 88220 | Oil Operator | Jul 2009 |
| 8 | Devon Energy Operating Co., L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2009 |
| 9 | Devon Energy Operating Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2013 |
| 10 | Devon Energy Production Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2015 |
| 11 | Devon Energy Production Company LP | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2025 |
| 12 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 13 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 14 | Dickson Petroleum | Midland, TX 79710 | Oil & Gas Operator | Nov 1998 |
| 15 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Mar 2025 |
| 16 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | Mar 2025 |
| 17 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Jan 2025 |
| 18 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 19 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 20 | Doral Energy Corp. | Midland, TX 79708 | Oil & Gas Operator | Jun 2012 |
| 21 | Dorothy Boyce | Artesia, NM 88210 | Oil & Gas Operator | Sep 2000 |
| 22 | Douglas Oil & Gas LP | State College, PA 16803 | Oil & Gas Operator | Dec 2007 |
| 23 | Doyle Hartman | Midland, TX 79702 | Oil & Gas Operator | Nov 2005 |
| 24 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 25 | Dwight A Tipton | Lovington, NM 88260 | Oil & Gas Operator | Jan 2025 |