| 7301 | Dan Texas Company | Waco, TX 76710 | Oil & Gas Operator | Sep 1998 |
| 7302 | Dana Petroleum Inc | Salt Lake City, UT 84047 | Oil & Gas Operator | Nov 1998 |
| 7303 | Dance Oil Co | Denver, CO 80202 | Oil & Gas Operator | May 1993 |
| 7304 | Danco Enterprises Inc | Ada, OK 74820 | Oil Operator | Apr 2008 |
| 7305 | Danco Oil & Gas | White Deer, TX 79097 | Oil & Gas Operator | Aug 2013 |
| 7306 | Dane G. Hansen Trust | | Oil Operator | Dec 1994 |
| 7307 | Danick Operating USA Inc | McKinney, TX 75072-9071 | Oil & Gas Operator | Oct 2022 |
| 7308 | Daniel B. Robinett | | Oil & Gas Operator | Dec 1990 |
| 7309 | Daniel Explorations Inc | Georgetown, TX 78627 | Oil & Gas Operator | Apr 2009 |
| 7310 | Daniel Mineral Development, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 7311 | Daniel Oil & Gas | Granbury, TX 76049 | Oil & Gas Operator | Oct 2010 |
| 7312 | Daniel Oil Company | | Oil & Gas Operator | Jan 1983 |
| 7313 | Daniel P Hornburg | Clarendon, PA 16313-2324 | Oil & Gas Operator | Dec 2025 |
| 7314 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 7315 | Daniel, Freeman | El Dorado, AR 71730 | Oil Operator | Jan 2025 |
| 7316 | Daniel-Price Exploration Co | Tulsa, OK 74119 | Gas Operator | Apr 2011 |
| 7317 | Daniels Corporation, The | Seabrook, TX 77586 | Oil & Gas Operator | Aug 2026 |
| 7318 | Daniels Danny | Tishomingo, OK 73460-0853 | Oil Operator | Apr 2015 |
| 7319 | Daniels E L Dril | | Oil Operator | Nov 1995 |
| 7320 | Daniels Earlene Inc | Follett, TX 79034-9736 | Oil & Gas Operator | Mar 2015 |
| 7321 | Daniels Energy | Pampa, TX 79066 | Oil & Gas Operator | Aug 2026 |
| 7322 | Daniels Oil Co. | | Oil Operator | Nov 2025 |
| 7323 | Daniels Petroleu | | Oil Operator | Jan 1991 |
| 7324 | Daniels Petroleum Co | Denver, CO 80202 | Oil & Gas Operator | Mar 2003 |
| 7325 | Daniels, C. W. | Stockdale, TX 78160 | Oil & Gas Operator | Dec 2009 |
| 7326 | Daniels, Earlene | Follett, TX 79034 | Oil & Gas Operator | Feb 2002 |
| 7327 | Daniels, J.C. Energy | Pampa, TX 79066 | Oil & Gas Operator | Apr 2001 |
| 7328 | Dankbar, LLC | Kevin, MT 59454 | Oil Operator | May 2026 |
| 7329 | Danmar Production Company LLC | | Oil & Gas Operator | Dec 2022 |
| 7330 | Danmark Energy Services, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Apr 2021 |
| 7331 | Dannic Energy Corp | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2025 |
| 7332 | Danny E Webb Construction Inc | Lochgelly, WV 25866 | Gas Operator | Dec 2020 |
| 7333 | Danny Engel Operating LLC | Ada, OK 74820-1388 | Oil Operator | Apr 2026 |
| 7334 | Danny Glass | | Oil Operator | Jan 1987 |
| 7335 | Danny Long & Sons Inc | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2025 |
| 7336 | Danos Oil & Gas LLC | | Oil & Gas Operator | Oct 2024 |
| 7337 | Dant Operating Company Inc. | | Oil & Gas Operator | Jan 1989 |
| 7338 | Dantex Oil & Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 7339 | Dao Oil And Gas | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Aug 2026 |
| 7340 | Dapsco, Inc. | | Oil & Gas Operator | Dec 1976 |
| 7341 | Dar-Lon Operating Company | Lamont, OK 74643 | Oil & Gas Operator | Oct 2000 |
| 7342 | Dara Operating Company, LLC | Electra, TX 76360 | Oil & Gas Operator | May 2026 |
| 7343 | Darco Operators | Big Lake, TX 76932 | Oil & Gas Operator | Aug 2026 |
| 7344 | Darco Petroleum Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Dec 2020 |
| 7345 | Dardan Expl Inc-H Edison Ellis | | Oil & Gas Operator | Apr 1990 |
| 7346 | Darden Energy Corp | Hennessey, OK 73742 | Oil & Gas Operator | Jul 1999 |
| 7347 | Dark Canyon Resources LLC | Refugio, TX 78377 | Oil Operator | Aug 2026 |
| 7348 | Dark Horse | | Oil Operator | Mar 2026 |
| 7349 | Dark Horse Operating Co., L.L.C. | Denton, TX 76202 | Oil & Gas Operator | Oct 2022 |
| 7350 | Dark Horse Producing Of TX, L.P. | Alice, TX 78333 | Oil & Gas Operator | Aug 2026 |
| 7351 | Darkens Oil & Gas Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Aug 2026 |
| 7352 | Darley Enterprises, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2012 |
| 7353 | Darling Dan Oil | | Oil & Gas Operator | Sep 2018 |
| 7354 | Darling Oil Corporation | Lamont, OK 74643 | Oil & Gas Operator | Apr 2026 |
| 7355 | Darnall, Eric W | Sedan, KS 67361 | Oil Operator | Apr 2026 |
| 7356 | Darnall, Walter E. | Chautauqua, KS 67334 | Oil Operator | Dec 2009 |
| 7357 | Darnell Alma | Bristow, OK 74010 | Oil & Gas Operator | Jun 2000 |
| 7358 | Darnell Bobby J | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | Apr 2026 |
| 7359 | Darr-Hey Oil, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Aug 2026 |
| 7360 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 7361 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | May 2026 |
| 7362 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Aug 2026 |
| 7363 | Darrell'S Drilling Inc | Konawa, OK 74849 | Oil Operator | Apr 2026 |
| 7364 | Darriel C Ray | | Oil Operator | Jun 2020 |
| 7365 | Darsey Operating Corporation | | Oil & Gas Operator | Sep 1990 |
| 7366 | Darst Creek Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Mar 2021 |
| 7367 | Dart Cherokee Basin Operating Co., LLC | Mason, MI 48854 | Oil & Gas Operator | Apr 2026 |
| 7368 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 7369 | Dart Oil & Gas Ohio LLC | Mason, MI 48854 | Oil Operator | Dec 2018 |
| 7370 | Dart Oil Company | Parker, CO 80134 | Oil & Gas Operator | Dec 2025 |
| 7371 | Dart Oil Properties | Enid, OK 73703 | Oil & Gas Operator | Oct 1992 |
| 7372 | Dartex Energy Corporation | Austin, TX 78731 | Oil & Gas Operator | Aug 2026 |
| 7373 | Dartex Energy Inc | Graham, TX 76450 | Oil & Gas Operator | Aug 2026 |
| 7374 | Darwin Allen Dba Wil-Mar Operations | Duncan, OK 73534-1566 | Oil & Gas Operator | Oct 2016 |
| 7375 | Das Oil Co. L.L.C. | Post, TX 79356 | Oil Operator | Aug 2026 |
| 7376 | Dasbek Energy, L.L.C. | Sugar Land, TX 77479 | Oil & Gas Operator | Aug 2026 |
| 7377 | Dash Operating LLC | Oklahoma City, OK 73118-5031 | Oil & Gas Operator | Mar 2026 |
| 7378 | Dash Production Company, Inc. | Corpus Christ, TX 78411 | Oil & Gas Operator | Aug 2026 |
| 7379 | Data Energy Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jul 2018 |
| 7380 | Daube Company The | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2026 |
| 7381 | Daube Exploration Company | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2020 |
| 7382 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Aug 2026 |
| 7383 | Dauco Petroleum Corporation | Rowlett, TX 75089-3066 | Oil & Gas Operator | Jan 2021 |
| 7384 | Daughenbaugh, James And Meshelle | Gerry, NY 14740 | Gas Operator | Dec 2025 |
| 7385 | Davco Drilling Co. | | Gas Operator | Dec 2001 |
| 7386 | Davco Oil LLC | Fort Worth, TX 76108 | Oil & Gas Operator | Aug 2026 |
| 7387 | Davco Productions Inc | Springer, OK 73458-8191 | Oil & Gas Operator | Jun 2021 |
| 7388 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 7389 | Dave Easom Production Co. Inc. | | Oil & Gas Operator | May 2000 |
| 7390 | Dave M Thomas Jr | Farmington, NM 87499 | Oil & Gas Operator | Aug 1995 |
| 7391 | Dave Shrader Oil FLD SVC Inc | Endeavor, PA 16322-0189 | Oil & Gas Operator | Dec 2025 |
| 7392 | Dave'S Production | | Oil Operator | Dec 2024 |
| 7393 | Davenport Oil Company | Luling, TX 78648 | Oil & Gas Operator | Dec 1996 |
| 7394 | Davenport Production Corp. | | Oil Operator | Sep 1988 |
| 7395 | Davenport, Vernon | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2008 |
| 7396 | Davenport, Vernon Prod. Co. | Dumas, TX 79029 | Oil & Gas Operator | Jan 2002 |
| 7397 | Davey Corporation | Golden, CO 80401 | Oil & Gas Operator | May 2026 |
| 7398 | David A Waldron & Assoc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2016 |
| 7399 | David A. Robinson | | Oil Operator | Jan 1999 |
| 7400 | David Crow | | Oil & Gas Operator | Nov 1985 |