| 7101 | D C Energy | Tulsa, OK 74137 | Oil Operator | Jun 2009 |
| 7102 | D C Energy, Inc. | Oklahoma City, OK 73134 | Oil & Gas Operator | Apr 2020 |
| 7103 | D C Oil Company, Inc. | Sundown, TX 79372 | Oil & Gas Operator | May 2026 |
| 7104 | D C Oil, Inc | Whitesville, KY 42378 | Oil Operator | Dec 2017 |
| 7105 | D D Natural Resources LLC | | Oil & Gas Operator | Mar 2026 |
| 7106 | D G D Oil Co. | Imperial, TX 79743 | Oil & Gas Operator | May 2026 |
| 7107 | D H & L Operating, Inc. | | Oil & Gas Operator | Sep 1983 |
| 7108 | D H Hunt | Dallas, TX 75201 | Oil & Gas Operator | Dec 1994 |
| 7109 | D J Oil Operations | | Oil Operator | Dec 2009 |
| 7110 | D J Production | Pasadena, TX 77502 | Oil & Gas Operator | Mar 2025 |
| 7111 | D J Simmons, Inc | Farmington, NM 87499 | Oil & Gas Operator | Apr 2020 |
| 7112 | D K Cook Heirs LLC | Houston, TX 77002 | Oil & Gas Operator | Dec 2011 |
| 7113 | D K Oil Services LLC | Wellsville, KS 66092 | Oil Operator | Nov 2019 |
| 7114 | D L Operating | Graham, TX 76450 | Oil & Gas Operator | May 2026 |
| 7115 | D M Norman | Midland, TX 79701 | Oil & Gas Operator | Jan 2003 |
| 7116 | D N Stover Inc | Knox, PA 16232-0810 | Oil & Gas Operator | Dec 2015 |
| 7117 | D O Walker Inc | Stratford, OK 74872 | Oil Operator | Jan 2026 |
| 7118 | D Oil, Inc. | Victoria, KS 67671 | Oil Operator | Dec 2025 |
| 7119 | D R & D Co | Warren, PA 16365-2302 | Oil Operator | Dec 2025 |
| 7120 | D S & W Well Ser | | Oil Operator | Nov 1996 |
| 7121 | D S & W Well Servicing, Inc. | Great Bend, KS 67530 | Oil & Gas Operator | Dec 2019 |
| 7122 | D T E Gas And Oil Co | | Gas Operator | May 2007 |
| 7123 | D T E Gas Company | | Oil & Gas Operator | Jun 1999 |
| 7124 | D U Investments | Salina, KS 67401 | Oil & Gas Operator | Dec 2009 |
| 7125 | D W Energy, LLC | Dunbar, WV 25064 | Oil & Gas Operator | Dec 2021 |
| 7126 | D&D Energy Company | N.Canton, OH 44721 | Oil & Gas Operator | Dec 2020 |
| 7127 | D&H-S-S Production Co.,Inc | Corpus Chrsti, TX 78409 | Oil & Gas Operator | Aug 2003 |
| 7128 | D&M Operating, L.L.C. | Corpus Chrsti, TX 78414 | Gas Operator | May 2026 |
| 7129 | D&S Oil & Gas Operators, Inc. | | Oil & Gas Operator | Dec 2020 |
| 7130 | D&S Oil And Gas Properties | San Angelo, TX 76902 | Oil & Gas Operator | May 2026 |
| 7131 | D'Amato, Giovanni C. | Elma, NY 14059 | Gas Operator | Dec 2024 |
| 7132 | D-B-K Operating Company | | Oil Operator | Jan 2006 |
| 7133 | D-Bar Leasing, Inc. | Abilene, TX 79604 | Oil & Gas Operator | Apr 2022 |
| 7134 | D-D Oil | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2018 |
| 7135 | D-Mil Production Inc | Argyle, TX 76226 | Oil & Gas Operator | May 2026 |
| 7136 | D-O-R Lease Service, Inc. | | Oil & Gas Operator | Mar 2009 |
| 7137 | D-Oil Incorporat | | Oil Operator | Aug 1990 |
| 7138 | D-Pex Operating Company | | Oil & Gas Operator | Sep 2004 |
| 7139 | D-Ram Construction Co., Inc. | | Gas Operator | Dec 1990 |
| 7140 | D-S-B Properties, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Sep 2014 |
| 7141 | D-S-B Properties, LLC | Kilgore, TX 75663 | Oil & Gas Operator | May 2026 |
| 7142 | D-T Development Company | Richardson, TX 75081 | Oil & Gas Operator | Sep 2002 |
| 7143 | D-Tec Well Production LLC | | Oil Operator | Dec 2024 |
| 7144 | D. A. Biglane Operating Co Et Al | | Oil Operator | Feb 2004 |
| 7145 | D. & D. Operating Account | Breckenridge, TX 76424 | Oil & Gas Operator | Mar 2009 |
| 7146 | D. A. B. Oil Service, Inc. | Abilene, TX 79608 | Oil & Gas Operator | Nov 2012 |
| 7147 | D. A. Biglane | | Oil & Gas Operator | Feb 1990 |
| 7148 | D. A. Milton | | Oil & Gas Operator | Dec 2016 |
| 7149 | D. A. Stark | | Oil Operator | Dec 1990 |
| 7150 | D. B. Braddock | | Oil & Gas Operator | Jan 1986 |
| 7151 | D. B. Braddock-Kisatchie Res. | | Oil & Gas Operator | Jan 1985 |
| 7152 | D. B. McClinton | | Oil & Gas Operator | Jun 1992 |
| 7153 | D. B. McConnell | | Oil & Gas Operator | Oct 1991 |
| 7154 | D. B. McConnell Et Al | | Oil & Gas Operator | Nov 1993 |
| 7155 | D. C. Bintliff | | Oil & Gas Operator | Mar 1987 |
| 7156 | D. C. Bintliff Et Al | | Oil & Gas Operator | Feb 1987 |
| 7157 | D. C. Bintliff-McCormick O&G | | Oil & Gas Operator | Oct 1983 |
| 7158 | D. C. Malcolm, Inc. | Charleston, WV 25301 | Oil & Gas Operator | Dec 2021 |
| 7159 | D. E. Craggs Inc. | | Gas Operator | Dec 1993 |
| 7160 | D. E. Exploration, Inc. | Wellsville, KS 66092 | Oil & Gas Operator | Dec 2025 |
| 7161 | D. G. Haney, Inc. | Charleston, WV 25338-3810 | Oil & Gas Operator | Dec 2021 |
| 7162 | D. G. Oil Co. | Dennis, TX 76439 | Oil & Gas Operator | May 2026 |
| 7163 | D. I. Dupree | | Oil & Gas Operator | Sep 2015 |
| 7164 | D. J. Fritz | | Oil & Gas Operator | Feb 1982 |
| 7165 | D. J. Hatfield | | Oil & Gas Operator | Dec 1994 |
| 7166 | D. J. Pickrell Operator | | Gas Operator | Dec 2012 |
| 7167 | D. J. Simmons & Co. Of La. | | Gas Operator | Nov 1996 |
| 7168 | D. Jackson Rentals LLC | Easton, KS 66020 | Oil Operator | Dec 2025 |
| 7169 | D. K. Boyd Oil & Gas Co., Inc. | Midland, TX 79702 | Oil & Gas Operator | Apr 1999 |
| 7170 | D. L. & Barbara W. Chiles | | Oil Operator | Jan 2025 |
| 7171 | D. L. Gish | | Oil Operator | Mar 1992 |
| 7172 | D. L. Gish Oil Partnership | | Oil Operator | Feb 1989 |
| 7173 | D. L. Gish Oil, Inc. | | Oil Operator | Jul 1998 |
| 7174 | D. L. Gish, Inc. | | Oil Operator | Jun 1990 |
| 7175 | D. L. Trainer | | Oil Operator | Mar 1991 |
| 7176 | D. O. G. Operating, LLC | Port Aransas, TX 78373 | Oil & Gas Operator | May 2026 |
| 7177 | D. R. Lauck Oil Co., Inc. | Wichita, KS 67206 | Oil & Gas Operator | Jul 2019 |
| 7178 | D. S. Owens | | Oil & Gas Operator | Dec 1991 |
| 7179 | D. Shel Oil, Inc. | Gonzales, TX 78629 | Oil Operator | May 2026 |
| 7180 | D. W. Chumley, Jr. | | Oil & Gas Operator | Dec 2024 |
| 7181 | D. W. Elliott Operating Acct | | Oil & Gas Operator | Dec 1991 |
| 7182 | D. W. Tanner | | Oil & Gas Operator | May 2000 |
| 7183 | D.C. Oil | Natalia, TX 78059 | Oil Operator | May 2026 |
| 7184 | D.C.Bintliff-McCormick Oper Co | | Oil & Gas Operator | May 1984 |
| 7185 | D.J. & T. Energy | Abilene, TX 79601 | Oil & Gas Operator | May 2026 |
| 7186 | D.J.F. Petroleum Corporation | | Oil & Gas Operator | Oct 1992 |
| 7187 | D.J.F. Services, Inc. | Holdenville, OK 74848 | Oil & Gas Operator | May 2026 |
| 7188 | D.K. Rush Oil Co., LLC | El Dorado, KS 67042 | Oil Operator | Dec 2025 |
| 7189 | D.K.D. | Merkel, TX 79536 | Oil & Gas Operator | May 2026 |
| 7190 | D.M. Well Service | | Oil Operator | Dec 2019 |
| 7191 | D.O.E. Energy | Palestine, TX 75801 | Oil & Gas Operator | May 2026 |
| 7192 | D.T. Inc. | Abilene, TX 79608 | Oil & Gas Operator | May 2026 |
| 7193 | D.W.P. Production | Perryton, TX 79070 | Oil & Gas Operator | Nov 2020 |
| 7194 | D.W.R. Oil Properties, Inc. | Merkel, TX 79536 | Oil & Gas Operator | Mar 2026 |
| 7195 | D.W.S. Properties | Sterling, KS 67579 | Oil Operator | Mar 2006 |
| 7196 | D.Y. Exploration, Inc. | Boise, ID 83705 | Oil & Gas Operator | May 2026 |
| 7197 | D10 Energy LLC | Stinnett, TX 79083 | Oil & Gas Operator | May 2026 |
| 7198 | D90 Energy, LLC | Houston, TX 77024 | Oil & Gas Operator | May 2026 |
| 7199 | Da Co Petroleum, Inc. | Wann, OK 74083 | Gas Operator | Apr 2003 |
| 7200 | Da Crowe & Associates, Inc | Chappell Hill, TX 77426 | Oil & Gas Operator | Sep 2010 |