| 1 | D E Energy LTD | Midland, TX 79701 | Oil & Gas Operator | Jun 1995 |
| 2 | D H Hunt | Dallas, TX 75201 | Oil & Gas Operator | Dec 1994 |
| 3 | D J Simmons, Inc | Farmington, NM 87499 | Oil & Gas Operator | Apr 2020 |
| 4 | D M Norman | Midland, TX 79701 | Oil & Gas Operator | Jan 2003 |
| 5 | D N C Enterprises Inc | Farmington, NM 87402 | Oil & Gas Operator | Feb 2005 |
| 6 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | Dec 2025 |
| 7 | D. K. Boyd Oil & Gas Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1999 |
| 8 | D.W.R. Oil Properties, Inc. | Merkel, TX 79536 | Oil & Gas Operator | Oct 2025 |
| 9 | Dabb Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Aug 2020 |
| 10 | Dakota Resources, Inc | Midland, TX 79707 | Oil & Gas Operator | Jul 2025 |
| 11 | Dalen Resources Oil & Gas Co | Dallas, TX 75206 | Oil & Gas Operator | Jun 2010 |
| 12 | Dallas Production | Dallas, TX 75206 | Oil & Gas Operator | Sep 1996 |
| 13 | Dan C Berry | Eunice, NM 88231 | Oil Operator | Oct 1995 |
| 14 | Dan Strong Jr | Midland, TX 79702 | Oil & Gas Operator | Mar 1994 |
| 15 | Danny R Watson | Tatum, NM 88267 | Oil & Gas Operator | Nov 1997 |
| 16 | Danny R Watson Operating | Tatum, NM 88267 | Oil & Gas Operator | Nov 1997 |
| 17 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 18 | Dave M Thomas Jr | Farmington, NM 87499 | Oil & Gas Operator | Aug 1995 |
| 19 | David G Hammond | Artesia, NM 88211 | Oil Operator | May 2013 |
| 20 | David H Arrington Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 21 | Delta Petroleum Corp | Denver, CO 80202 | Oil & Gas Operator | Dec 2024 |
| 22 | Dennis Langlitz | Carlsbad, NM 88220 | Oil Operator | Jul 2009 |
| 23 | Denveramerican Petroleum, A LTD Liability Co | Denver, CO 80203 | Oil & Gas Operator | Sep 1997 |
| 24 | Desert Mountain Energy Corp. | Carson, NV 89701 | Gas Operator | Sep 2025 |
| 25 | Devon Energy Operating Co., L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Jun 2009 |
| 26 | Devon Energy Operating Corp | Oklahoma City, OK 73102 | Oil & Gas Operator | Apr 2013 |
| 27 | Devon Energy Production Co | Oklahoma City, OK 73102 | Oil & Gas Operator | Jul 2015 |
| 28 | Devon Energy Production Company, L.P. | Oklahoma City, OK 73102 | Oil & Gas Operator | Dec 2025 |
| 29 | Devon Louisiana Corporation | Houston, TX 77002 | Oil & Gas Operator | Oct 2019 |
| 30 | Devon SFS Operating Inc | Oklahoma City, OK 73102 | Oil & Gas Operator | Mar 2008 |
| 31 | DGP Energy, LLC | Wilmington, DE 19801 | Oil & Gas Operator | Oct 2025 |
| 32 | Diamond S Energy Company | Fort Worth, TX 76132 | Oil & Gas Operator | Dec 2025 |
| 33 | Diamondback Resources LLC | Midland, TX 79705 | Oil & Gas Operator | May 2018 |
| 34 | Dickson Petroleum | Midland, TX 79710 | Oil & Gas Operator | Nov 1998 |
| 35 | Dinero Operating Co | Midland, TX 79702 | Oil & Gas Operator | Dec 2025 |
| 36 | Discovery Operating Inc | Midland, TX 79705 | Oil & Gas Operator | Dec 2025 |
| 37 | DJR Operating, LLC | Farmington, NM 87401 | Oil & Gas Operator | Sep 2025 |
| 38 | DKD Production, LLC | Tatum, NM 88267 | Oil Operator | Oct 2025 |
| 39 | DKD,LLC | Tatum, NM 88267 | Oil & Gas Operator | Oct 2022 |
| 40 | DMS Oil Company | Houston, TX 77042 | Oil & Gas Operator | Sep 2025 |
| 41 | Dominion Exploration & Production Inc | Houston, TX 77060 | Oil & Gas Operator | Apr 2015 |
| 42 | Dominion Oklahoma Texas Expl & Prod Inc | Oklahoma City, OK 73134 | Oil & Gas Operator | Aug 2013 |
| 43 | Dominion Production Company, LLC | Tampa, FL 33606 | Oil & Gas Operator | Dec 2025 |
| 44 | Don R Ormand | Midland, TX 79702 | Oil & Gas Operator | Jun 2014 |
| 45 | Doral Energy Corp. | Midland, TX 79708 | Oil & Gas Operator | Jun 2012 |
| 46 | Dorothy Boyce | Artesia, NM 88210 | Oil & Gas Operator | Sep 2000 |
| 47 | Double Eagle Petroleum Corp | Evansville, IN 47725 | Oil & Gas Operator | Dec 2025 |
| 48 | Douglas Oil & Gas LP | State College, PA 16803 | Oil & Gas Operator | Dec 2007 |
| 49 | Doyle E Baxter | Bloomfield, NM 87413 | Oil Operator | Feb 2005 |
| 50 | Doyle Hartman | Midland, TX 79702 | Oil & Gas Operator | Nov 2005 |
| 51 | Draco Energy, Inc. | Midland, TX 79701 | Oil & Gas Operator | Dec 2025 |
| 52 | Driftwood Oil, LLC | Jal, NM 88252 | Oil & Gas Operator | Sep 2025 |
| 53 | Drum Energy Corp | Hobbs, NM 88241 | Oil & Gas Operator | Mar 1996 |
| 54 | Dugan Production Corp | Farmington, NM 87499 | Oil & Gas Operator | Sep 2025 |
| 55 | Duke Oil & Gas Inc | Colorado City, TX 79512 | Oil & Gas Operator | May 2003 |
| 56 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 57 | Dwight A Tipton | Lovington, NM 88260 | Oil & Gas Operator | Apr 2025 |
| 58 | Dwight Tipton Et Al | Hobbs, NM 88240 | Oil & Gas Operator | Nov 2002 |
| 59 | Dyad Petroleum Company | Midland, TX 79710 | Oil & Gas Operator | Sep 2021 |