| 8201 | Doonan And Sons, Inc. | Great Bend, KS 67530 | Oil Operator | Apr 2021 |
| 8202 | Dora Inc | Levelland, TX 79336 | Oil & Gas Operator | Jul 2019 |
| 8203 | Dorado Drilling, Inc. | Gulfport, MS 39501 | Oil & Gas Operator | Nov 2024 |
| 8204 | Dorado E & P Partners LLC | Tulsa, OK 74103 | Oil & Gas Operator | Sep 2024 |
| 8205 | Dorado Energy LLC | Edmond, OK 73012-0927 | Oil & Gas Operator | Jan 2021 |
| 8206 | Dorado Gas Resources LLC | Centennial, CO 80112 | Oil & Gas Operator | Jul 2009 |
| 8207 | Dorado Oil Company | Corpus Chrsti, TX 78403 | Oil & Gas Operator | Dec 2014 |
| 8208 | Dorado Operating Inc. | Dallas, TX 75225 | Oil & Gas Operator | Apr 2011 |
| 8209 | Doral Energy Corp. | Midland, TX 79708 | Oil & Gas Operator | Jun 2012 |
| 8210 | Doralex Energy I | | Oil & Gas Operator | Feb 1995 |
| 8211 | Doralex Energy, Inc. | San Angelo, TX 76904 | Oil Operator | Feb 2000 |
| 8212 | Doran & Associates | Pittsburgh, PA 15220 | Oil & Gas Operator | Dec 1988 |
| 8213 | Doran & Braddock & Nelson Petr | | Oil Operator | Feb 1982 |
| 8214 | Doran And Braddock | | Oil & Gas Operator | Nov 1984 |
| 8215 | Dorbert Oil & Gas, Inc. | | Gas Operator | Aug 1988 |
| 8216 | Dorcheat Oil & Gas, LLC | | Oil & Gas Operator | Jun 2024 |
| 8217 | Dorchester Exploration, Inc. | Dallas, TX 75231 | Oil & Gas Operator | Aug 2001 |
| 8218 | Dorchester Hugot | | Gas Operator | Sep 1993 |
| 8219 | Dorchester Hugoton LTD | Garland, TX 75042-8212 | Oil & Gas Operator | Mar 2004 |
| 8220 | Dorchester Minerals Operating LP | Dallas, TX 75219 | Oil & Gas Operator | Jun 2022 |
| 8221 | Dorchester Operating Company LLC | Refugio, TX 78377 | Oil & Gas Operator | Nov 2024 |
| 8222 | Dore Corporation | Amarillo, TX 79119 | Gas Operator | Jun 2010 |
| 8223 | Dore Energy Co., LTD. | Amarillo, TX 79101 | Gas Operator | Nov 2024 |
| 8224 | Dore-Dyn Production Co., Inc. | | Oil & Gas Operator | Jul 1993 |
| 8225 | Dorel Inc | | Oil Operator | Apr 2001 |
| 8226 | Dorey Oil Corporation | Healdton, OK 73438-0856 | Oil Operator | Apr 2014 |
| 8227 | Dorfman Production Company | Beloit, OH 44609 | Oil & Gas Operator | Nov 2024 |
| 8228 | Dorfs Drilling Company | Waurika, OK 73573 | Oil & Gas Operator | Sep 2024 |
| 8229 | Dorland, D. L. | Midland, TX 79701 | Oil & Gas Operator | Aug 2003 |
| 8230 | Dorland, D. L. Estate Of | Midland, TX 79702 | Oil & Gas Operator | Nov 1994 |
| 8231 | Dorland, D. L. Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 1994 |
| 8232 | Dorondoco Operating Co., Inc. | Brownwood, TX 76801 | Oil & Gas Operator | May 1994 |
| 8233 | Dorothy Boyce | Artesia, NM 88210 | Oil & Gas Operator | Sep 2000 |
| 8234 | Dorothy F. Hamlin | | Oil Operator | Dec 1985 |
| 8235 | Dorothy Oil Company | | Oil & Gas Operator | Oct 1994 |
| 8236 | Dorough, Lee Operations | Orlando, FL 32801 | Oil & Gas Operator | Nov 2024 |
| 8237 | Dorr, John R. | Pecos, TX 79772 | Oil & Gas Operator | Nov 2024 |
| 8238 | Dorsey Oil & Gas LLC | Nashport, OH 43830 | Oil & Gas Operator | Dec 2023 |
| 8239 | Dorso Energy | Wexford, PA 15090 | Oil & Gas Operator | Dec 2004 |
| 8240 | Dorso LLC | Wexford, PA 15090-8758 | Oil & Gas Operator | Dec 2005 |
| 8241 | Dorso LP | Wexford, PA 15090-8314 | Oil & Gas Operator | Aug 2024 |
| 8242 | Dorward Energy Corporation | Saint Petersburg, FL 33701-3255 | Oil & Gas Operator | Dec 2023 |
| 8243 | Dos Cicadas | Miles, TX 76861 | Oil & Gas Operator | Nov 2024 |
| 8244 | Dos Lobos Oil Co. | | Oil Operator | Dec 1999 |
| 8245 | Dos Rios Inc. | | Gas Operator | Sep 2024 |
| 8246 | Dossie Dews | | Oil & Gas Operator | May 2024 |
| 8247 | Dotson Floyd | | Oil Operator | Dec 1980 |
| 8248 | Dotson Jack M Operating Co | Norman, OK 73072-6649 | Oil Operator | Oct 1993 |
| 8249 | Dotson, Robert M | | Oil Operator | Dec 2020 |
| 8250 | Doty, Tim | Sedan, KS 67361 | Oil Operator | Dec 2009 |
| 8251 | Double "C" Energy | Coweta, OK 74429 | Oil & Gas Operator | Mar 2015 |
| 8252 | Double "D" Oil Company, Inc. | Winfield, KS 67156 | Oil Operator | Jul 2024 |
| 8253 | Double "K" Oil, Inc. | Ellis, KS 67637 | Oil Operator | Dec 2019 |
| 8254 | Double 'B' Oil Company | | Oil Operator | Nov 2009 |
| 8255 | Double 'B' Oil I | | Oil Operator | Feb 1992 |
| 8256 | Double 'E' Oil-B | | Oil Operator | Mar 1989 |
| 8257 | Double Aa Oil, L.L.C. | | Oil Operator | Aug 2023 |
| 8258 | Double Aa S LLC | Mayport, PA 16240-5638 | Oil & Gas Operator | Dec 2019 |
| 8259 | Double Barrel Oil Co. | | Oil Operator | Dec 1978 |
| 8260 | Double Barrel Oil LLC | Brenham, TX 77834 | Oil & Gas Operator | Nov 2024 |
| 8261 | Double C Oil & Gas LLC | Jenks, OK 74037-6946 | Oil Operator | Sep 2024 |
| 8262 | Double C Operating LLC | Abilene, TX 79602 | Oil Operator | Nov 2024 |
| 8263 | Double D Producers, Inc | Edmonton, KY 42129 | Oil Operator | Dec 2022 |
| 8264 | Double D'S LLC | Hays, KS 67601 | Oil Operator | Jul 2024 |
| 8265 | Double Diamond Energy Corp. | Granbury, TX 76048 | Gas Operator | Apr 2013 |
| 8266 | Double Diamond Petroleum, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | Nov 2024 |
| 8267 | Double E Oil & Gas, L. P. | Electra, TX 76360 | Oil & Gas Operator | Nov 2024 |
| 8268 | Double Eagle Exp | | Oil Operator | Jul 1992 |
| 8269 | Double Eagle Exploration Inc | Windthorst, TX 76389 | Oil Operator | Jul 2024 |
| 8270 | Double Eagle Oil & Gas Inc | Enid, OK 73702 | Oil & Gas Operator | Jan 2000 |
| 8271 | Double Eagle Oil Co. | Marshall, TX 75670 | Oil & Gas Operator | Jan 2002 |
| 8272 | Double Eagle Operating, LLC | Fort Worth, TX 76113 | Oil & Gas Operator | Nov 2024 |
| 8273 | Double Eagle Petroleum Corp | Evansville, IN 47725 | Oil & Gas Operator | Nov 2024 |
| 8274 | Double Eagle Resources, LLC | FT Smith, AR 72901 | Oil & Gas Operator | Sep 2009 |
| 8275 | Double Eight Oil Company LLC | Nichols Hill, OK 73116 | Oil & Gas Operator | Nov 2024 |
| 8276 | Double F Oil Co. | | Oil Operator | Jun 2009 |
| 8277 | Double G Oil LLC | Bartlesville, OK 74003 | Oil Operator | Sep 2024 |
| 8278 | Double G Petro LLC | | Oil Operator | Jul 2024 |
| 8279 | Double H Petroleum Corporation | Tulsa, OK 74136-5414 | Oil & Gas Operator | May 2006 |
| 8280 | Double J Enterprises | Loving, TX 76460 | Oil Operator | Nov 2024 |
| 8281 | Double J Oil Co LLC | Bristow, OK 74010-9532 | Oil & Gas Operator | Sep 2024 |
| 8282 | Double J Operating Company, Inc. | San Antonio, TX 78205 | Oil Operator | Jan 2008 |
| 8283 | Double J Resources Inc | Bradford, PA 16701-6506 | Oil & Gas Operator | Dec 2022 |
| 8284 | Double K Production | Graham, TX 76450 | Oil & Gas Operator | Sep 2014 |
| 8285 | Double L Drilling | Yates Center, KS 66783 | Oil Operator | Jun 2000 |
| 8286 | Double L Oil Producers | | Oil Operator | Dec 2019 |
| 8287 | Double L Operating | Graham, TX 76450 | Oil & Gas Operator | Nov 2018 |
| 8288 | Double M Petroproperties, Inc. | Haskell, TX 79521 | Oil & Gas Operator | Nov 2024 |
| 8289 | Double Play Oil & Gas | Portland, TX 78374 | Oil & Gas Operator | Dec 2001 |
| 8290 | Double Play Oil & Gas, Inc | Portland, TX 78374 | Oil & Gas Operator | Nov 2024 |
| 8291 | Double R Oil Co. | Charlotte, TX 78011 | Oil & Gas Operator | May 2010 |
| 8292 | Double R Operations | Terral, OK 73569-5021 | Oil Operator | Dec 2014 |
| 8293 | Double R Petroleum | | Oil & Gas Operator | Sep 2004 |
| 8294 | Double S Liberty Energy, Inc. | Texarkana, TX 75501 | Oil & Gas Operator | Nov 2024 |
| 8295 | Double S Operating Co. | Wichita Falls, TX 76308 | Oil & Gas Operator | Nov 2024 |
| 8296 | Double T Energy LLC | Lenorah, TX 79749 | Oil Operator | Nov 2024 |
| 8297 | Double Ten Petro | | Oil Operator | Jul 1994 |
| 8298 | Double U Oil Co. | San Antonio, TX 78217 | Oil & Gas Operator | Feb 1996 |
| 8299 | Double U Oil Co., LTD. | San Antonio, TX 78217 | Oil & Gas Operator | May 2000 |
| 8300 | Doudna, Mark A. | Osawatomie, KS 66064 | Oil Operator | Nov 2009 |