| 7401 | Damar Resc Incor | | Oil Operator | Oct 1995 |
| 7402 | Damar Resources, Inc. | Hays, KS 67601 | Oil & Gas Operator | Oct 2023 |
| 7403 | Dameron Petroleum Corp. | Midland, TX 79708 | Oil & Gas Operator | Jul 2025 |
| 7404 | Damian Oil, Inc. | | Oil & Gas Operator | Dec 2024 |
| 7405 | Damron Energy | Eden, TX 76837 | Oil & Gas Operator | Jan 2015 |
| 7406 | Damron Energy, LLC | Eden, TX 76837 | Oil & Gas Operator | Jul 2025 |
| 7407 | Damson Oil Corpo | | Oil & Gas Operator | May 1994 |
| 7408 | Damson Oil Corporation | Houston, TX 77210 | Oil & Gas Operator | Mar 2005 |
| 7409 | Damson-Franks-McCord-Goodrich | | Oil & Gas Operator | Aug 1984 |
| 7410 | Dan A. Hughes Company | | Oil & Gas Operator | Dec 2005 |
| 7411 | Dan A. Hughes Company, L.P. | Beeville, TX 78104 | Oil & Gas Operator | Mar 2025 |
| 7412 | Dan C Berry | Eunice, NM 88231 | Oil Operator | Oct 1995 |
| 7413 | Dan Owens | | Oil & Gas Operator | Jul 1993 |
| 7414 | Dan Strong Jr | Midland, TX 79702 | Oil & Gas Operator | Mar 1994 |
| 7415 | Dan Texas Company | Waco, TX 76710 | Oil & Gas Operator | Sep 1998 |
| 7416 | Dana Petroleum Inc | Salt Lake City, UT 84047 | Oil & Gas Operator | Nov 1998 |
| 7417 | Dance Oil Company | Denver, CO 80202 | Oil & Gas Operator | May 1993 |
| 7418 | Danco Enterprises Inc | Ada, OK 74820 | Oil Operator | Apr 2008 |
| 7419 | Danco Oil & Gas | White Deer, TX 79097 | Oil & Gas Operator | Aug 2013 |
| 7420 | Dane G. Hansen Trust | | Oil Operator | Dec 1994 |
| 7421 | Danick Operating USA Inc | McKinney, TX 75072-9071 | Oil & Gas Operator | Oct 2022 |
| 7422 | Daniel B. Robinett | | Oil & Gas Operator | Dec 1990 |
| 7423 | Daniel Explorations Inc | Georgetown, TX 78627 | Oil & Gas Operator | Apr 2009 |
| 7424 | Daniel Mineral Development, Inc. | The Woodlands, TX 77380 | Oil & Gas Operator | Jun 2007 |
| 7425 | Daniel Oil & Gas | Granbury, TX 76049 | Oil & Gas Operator | Oct 2010 |
| 7426 | Daniel Oil Company | | Oil & Gas Operator | Jan 1983 |
| 7427 | Daniel P Hornburg | Clarendon, PA 16313-2324 | Oil & Gas Operator | Dec 2024 |
| 7428 | Daniel Resource Dev Inc | Tomball, TX 77375-8919 | Oil & Gas Operator | Oct 2009 |
| 7429 | Daniel, Freeman | El Dorado, AR 71730 | Oil Operator | Dec 2024 |
| 7430 | Daniel-Price Exploration Co | Tulsa, OK 74119 | Gas Operator | Apr 2011 |
| 7431 | Daniels Corporation, The | Seabrook, TX 77586 | Oil & Gas Operator | Jul 2025 |
| 7432 | Daniels Danny | Tishomingo, OK 73460-0853 | Oil Operator | Apr 2015 |
| 7433 | Daniels E L Dril | | Oil Operator | Nov 1995 |
| 7434 | Daniels Earlene Inc | Follett, TX 79034-9736 | Oil & Gas Operator | Mar 2015 |
| 7435 | Daniels Energy | Pampa, TX 79066 | Oil & Gas Operator | Jul 2025 |
| 7436 | Daniels Oil Co. | | Oil Operator | Mar 2025 |
| 7437 | Daniels Petroleu | | Oil Operator | Jan 1991 |
| 7438 | Daniels Petroleum Co | Denver, CO 80202 | Oil & Gas Operator | Mar 2003 |
| 7439 | Daniels, C. W. | Stockdale, TX 78160 | Oil & Gas Operator | Dec 2009 |
| 7440 | Daniels, Earlene | Follett, TX 79034 | Oil & Gas Operator | Feb 2002 |
| 7441 | Daniels, J.C. Energy | Pampa, TX 79066 | Oil & Gas Operator | Apr 2001 |
| 7442 | Dankbar, LLC | Kevin, MT 59454 | Oil Operator | May 2025 |
| 7443 | Danmark Energy Services, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Apr 2021 |
| 7444 | Dannic Energy Corp | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2024 |
| 7445 | Danny E Webb Construction Inc | Lochgelly, WV 25866 | Gas Operator | Dec 2020 |
| 7446 | Danny Engel Operating LLC | Ada, OK 74820-1388 | Oil Operator | Feb 2025 |
| 7447 | Danny Glass | | Oil Operator | Jan 1987 |
| 7448 | Danny Long & Sons Inc | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 7449 | Danos Oil & Gas LLC | | Oil & Gas Operator | Oct 2024 |
| 7450 | Dant Operating Company Inc. | | Oil & Gas Operator | Jan 1989 |
| 7451 | Dantex Oil & Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 7452 | Dao Oil And Gas | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Jul 2025 |
| 7453 | Dapsco, Inc. | | Oil & Gas Operator | Dec 1976 |
| 7454 | Dar-Lon Operating Company | Lamont, OK 74643 | Oil & Gas Operator | Oct 2000 |
| 7455 | Dara Operating Company, LLC | Electra, TX 76360 | Oil & Gas Operator | Jul 2025 |
| 7456 | Darco Operators | Big Lake, TX 76932 | Oil & Gas Operator | Jul 2025 |
| 7457 | Darco Petroleum, Inc. | Bartlesville, OK 74005 | Oil & Gas Operator | Dec 2020 |
| 7458 | Dardan Expl Inc-H Edison Ellis | | Oil & Gas Operator | Apr 1990 |
| 7459 | Darden Energy Corp | Hennessey, OK 73742 | Oil & Gas Operator | Jul 1999 |
| 7460 | Dark Canyon Resources LLC | Refugio, TX 78377 | Oil Operator | Jul 2025 |
| 7461 | Dark Horse | | Oil Operator | Sep 2024 |
| 7462 | Dark Horse Operating Co., L.L.C. | Denton, TX 76202 | Oil & Gas Operator | Oct 2022 |
| 7463 | Dark Horse Producing Of TX, L.P. | Alice, TX 78333 | Oil & Gas Operator | Jul 2025 |
| 7464 | Darkens Oil & Gas Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Jul 2025 |
| 7465 | Darley Enterprises, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2012 |
| 7466 | Darling Dan Oil | | Oil & Gas Operator | Sep 2018 |
| 7467 | Darling Oil Corporation | Lamont, OK 74643 | Oil & Gas Operator | Apr 2025 |
| 7468 | Darnall, Walter E. | Chautauqua, KS 67334 | Oil Operator | Dec 2009 |
| 7469 | Darnell Alma | Bristow, OK 74010 | Oil & Gas Operator | Jun 2000 |
| 7470 | Darnell Bobby J | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | May 2025 |
| 7471 | Darr-Hey Oil, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Jul 2025 |
| 7472 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 7473 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Apr 2025 |
| 7474 | Darrah Oil Company LLC | Wichita, KS 67201 | Oil & Gas Operator | Jul 2025 |
| 7475 | Darrell'S Drilling Inc | Konawa, OK 74849 | Oil Operator | Apr 2025 |
| 7476 | Darriel C Ray | | Oil Operator | Jun 2020 |
| 7477 | Darsey Operating Corporation | | Oil & Gas Operator | Sep 1990 |
| 7478 | Darst Creek Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Mar 2021 |
| 7479 | Dart Cherokee Basin Operating Co., LLC | Mason, MI 48854 | Oil & Gas Operator | Mar 2025 |
| 7480 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 7481 | Dart Oil & Gas Ohio LLC | Mason, MI 48854 | Oil Operator | Dec 2018 |
| 7482 | Dart Oil Co | Parker, CO 80134 | Oil & Gas Operator | Dec 2024 |
| 7483 | Dart Oil Properties | Enid, OK 73703 | Oil & Gas Operator | Oct 1992 |
| 7484 | Dartex Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Jul 2025 |
| 7485 | Dartex Energy Inc | Graham, TX 76450 | Oil & Gas Operator | Jul 2025 |
| 7486 | Das Oil Co. L.L.C. | Post, TX 79356 | Oil Operator | Jul 2025 |
| 7487 | Dasbek Energy, L.L.C. | Sugar Land, TX 77479 | Oil & Gas Operator | Jul 2025 |
| 7488 | Dash Operating LLC | Oklahoma City, OK 73118-5031 | Oil & Gas Operator | Apr 2025 |
| 7489 | Dash Production Company, Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Jul 2025 |
| 7490 | Data Energy Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jul 2018 |
| 7491 | Daube Company The | Ardmore, OK 73401 | Oil & Gas Operator | May 2025 |
| 7492 | Daube Exploration Company | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2020 |
| 7493 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Jul 2025 |
| 7494 | Dauco Petroleum Corporation | Rowlett, TX 75089-3066 | Oil & Gas Operator | Jan 2021 |
| 7495 | Daughenbaugh, James And Meshelle | Gerry, NY 14740 | Gas Operator | Dec 2024 |
| 7496 | Davco Drilling Co. | | Gas Operator | Dec 2001 |
| 7497 | Davco Oil LLC | Fort Worth, TX 76108 | Oil & Gas Operator | Jul 2025 |
| 7498 | Davco Productions Inc | Springer, OK 73458-8191 | Oil & Gas Operator | Jun 2021 |
| 7499 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 7500 | Dave Easom Production Co. Inc. | | Oil & Gas Operator | May 2000 |