| 7501 | Daniels Petroleu | | Oil Operator | Jan 1991 |
| 7502 | Daniels Petroleum Co | Denver, CO 80202 | Oil & Gas Operator | Mar 2003 |
| 7503 | Daniels, C. W. | Stockdale, TX 78160 | Oil & Gas Operator | Dec 2009 |
| 7504 | Daniels, Earlene | Follett, TX 79034 | Oil & Gas Operator | Feb 2002 |
| 7505 | Daniels, J.C. Energy | Pampa, TX 79066 | Oil & Gas Operator | Apr 2001 |
| 7506 | Dankbar, LLC | Kevin, MT 59454 | Oil Operator | Sep 2025 |
| 7507 | Danmar Production Company LLC | | Oil & Gas Operator | Dec 2022 |
| 7508 | Danmark Energy Services, Inc. | White Oak, TX 75693 | Oil & Gas Operator | Apr 2021 |
| 7509 | Dannic Energy Corp | Indiana, PA 15701-1532 | Oil & Gas Operator | Dec 2024 |
| 7510 | Danny E Webb Construction Inc | Lochgelly, WV 25866 | Gas Operator | Dec 2020 |
| 7511 | Danny Engel Operating LLC | Ada, OK 74820-1388 | Oil Operator | Aug 2025 |
| 7512 | Danny Glass | | Oil Operator | Jan 1987 |
| 7513 | Danny Long & Sons Inc | Magnolia, OH 44643 | Oil & Gas Operator | Dec 2024 |
| 7514 | Danny R Watson | Tatum, NM 88267 | Oil & Gas Operator | Nov 1997 |
| 7515 | Danny R Watson Operating | Tatum, NM 88267 | Oil & Gas Operator | Nov 1997 |
| 7516 | Danos Oil & Gas LLC | | Oil & Gas Operator | Oct 2024 |
| 7517 | Dant Operating Company Inc. | | Oil & Gas Operator | Jan 1989 |
| 7518 | Dantex Oil & Gas, Inc. | Dallas, TX 75225 | Oil & Gas Operator | Aug 2003 |
| 7519 | Dao Oil And Gas | Carrizo SPGS, TX 78834 | Oil & Gas Operator | Dec 2025 |
| 7520 | Dapsco, Inc. | | Oil & Gas Operator | Dec 1976 |
| 7521 | Dar-Lon Operating Company | Lamont, OK 74643 | Oil & Gas Operator | Oct 2000 |
| 7522 | Dara Operating Company, LLC | Electra, TX 76360 | Oil & Gas Operator | Dec 2025 |
| 7523 | Darco Operators | Big Lake, TX 76932 | Oil & Gas Operator | Dec 2025 |
| 7524 | Darco Petroleum Inc | Bartlesville, OK 74005 | Oil & Gas Operator | Dec 2020 |
| 7525 | Dardan Expl Inc-H Edison Ellis | | Oil & Gas Operator | Apr 1990 |
| 7526 | Darden Energy Corp | Hennessey, OK 73742 | Oil & Gas Operator | Jul 1999 |
| 7527 | Dark Canyon Resources LLC | Refugio, TX 78377 | Oil Operator | Dec 2025 |
| 7528 | Dark Horse | | Oil Operator | Jun 2025 |
| 7529 | Dark Horse Operating Co., L.L.C. | Denton, TX 76202 | Oil & Gas Operator | Oct 2022 |
| 7530 | Dark Horse Producing Of TX, L.P. | Alice, TX 78333 | Oil & Gas Operator | Dec 2025 |
| 7531 | Darkens Oil & Gas Inc. | MC Camey, TX 79752 | Oil & Gas Operator | Dec 2025 |
| 7532 | Darley Enterprises, Inc. | Brownwood, TX 76801 | Oil & Gas Operator | Jan 2012 |
| 7533 | Darling Dan Oil | | Oil & Gas Operator | Sep 2018 |
| 7534 | Darling Oil Corporation | Lamont, OK 74643 | Oil & Gas Operator | Oct 2025 |
| 7535 | Darnall, Walter E. | Chautauqua, KS 67334 | Oil Operator | Dec 2009 |
| 7536 | Darnell Alma | Bristow, OK 74010 | Oil & Gas Operator | Jun 2000 |
| 7537 | Darnell Bobby J | Oklahoma City, OK 73112-8884 | Oil & Gas Operator | Oct 2025 |
| 7538 | Darr-Hey Oil, LLC | Iowa Park, TX 76367 | Oil & Gas Operator | Dec 2025 |
| 7539 | Darrah John J Jr | | Oil & Gas Operator | Oct 1994 |
| 7540 | Darrah John Jay Jr | Wichita, KS 67201 | Oil & Gas Operator | Sep 2025 |
| 7541 | Darrah Oil Company, LLC | Wichita, KS 67201 | Oil & Gas Operator | Dec 2025 |
| 7542 | Darrell'S Drilling Inc | Konawa, OK 74849 | Oil Operator | Sep 2025 |
| 7543 | Darriel C Ray | | Oil Operator | Jun 2020 |
| 7544 | Darsey Operating Corporation | | Oil & Gas Operator | Sep 1990 |
| 7545 | Darst Creek Oil Company | Lockhart, TX 78644 | Oil & Gas Operator | Mar 2021 |
| 7546 | Dart Cherokee Basin Operating Co., LLC | Mason, MI 48854 | Oil & Gas Operator | Jun 2025 |
| 7547 | Dart Oil & Gas Corporation | Mason, MI 48854 | Oil & Gas Operator | Jun 2018 |
| 7548 | Dart Oil & Gas Ohio LLC | Mason, MI 48854 | Oil Operator | Dec 2018 |
| 7549 | Dart Oil Company | Parker, CO 80134 | Oil & Gas Operator | Dec 2024 |
| 7550 | Dart Oil Properties | Enid, OK 73703 | Oil & Gas Operator | Oct 1992 |
| 7551 | Dartex Energy Corporation | Austin, TX 78746 | Oil & Gas Operator | Dec 2025 |
| 7552 | Dartex Energy Inc | Graham, TX 76450 | Oil & Gas Operator | Dec 2025 |
| 7553 | Darwin Allen Dba Wil-Mar Operations | Duncan, OK 73534-1566 | Oil & Gas Operator | Oct 2016 |
| 7554 | Das Oil Co. L.L.C. | Post, TX 79356 | Oil Operator | Dec 2025 |
| 7555 | Dasbek Energy, L.L.C. | Sugar Land, TX 77479 | Oil & Gas Operator | Dec 2025 |
| 7556 | Dash Operating LLC | Oklahoma City, OK 73118-5031 | Oil & Gas Operator | Jul 2025 |
| 7557 | Dash Production Company, Inc. | Corpus Chrsti, TX 78411 | Oil & Gas Operator | Dec 2025 |
| 7558 | Data Energy Inc | Evergreen, CO 80439 | Oil & Gas Operator | Jul 2018 |
| 7559 | Daube Company The | Ardmore, OK 73401 | Oil & Gas Operator | Oct 2025 |
| 7560 | Daube Exploration Company | Ardmore, OK 73402 | Oil & Gas Operator | Nov 2020 |
| 7561 | Daubert Operating, L.L.C. | San Antonio, TX 78209 | Oil Operator | Dec 2025 |
| 7562 | Dauco Petroleum Corporation | Rowlett, TX 75089-3066 | Oil & Gas Operator | Jan 2021 |
| 7563 | Daughenbaugh, James And Meshelle | Gerry, NY 14740 | Gas Operator | Dec 2024 |
| 7564 | Davco Drilling Co. | | Gas Operator | Dec 2001 |
| 7565 | Davco Oil LLC | Fort Worth, TX 76108 | Oil & Gas Operator | Dec 2025 |
| 7566 | Davco Productions Inc | Springer, OK 73458-8191 | Oil & Gas Operator | Jun 2021 |
| 7567 | Davcro Inc. | Lubbock, TX 79401 | Oil & Gas Operator | Dec 2003 |
| 7568 | Dave Easom Production Co. Inc. | | Oil & Gas Operator | May 2000 |
| 7569 | Dave M Thomas Jr | Farmington, NM 87499 | Oil & Gas Operator | Aug 1995 |
| 7570 | Dave Shrader Oil FLD SVC Inc | Endeavor, PA 16322-0189 | Oil & Gas Operator | Dec 2024 |
| 7571 | Dave'S Production | | Oil Operator | Dec 2024 |
| 7572 | Davenport Oil Company | Luling, TX 78648 | Oil & Gas Operator | Dec 1996 |
| 7573 | Davenport Production Corp. | | Oil Operator | Sep 1988 |
| 7574 | Davenport, Vernon | Shamrock, TX 79079 | Oil & Gas Operator | Mar 2008 |
| 7575 | Davenport, Vernon Prod. Co. | Dumas, TX 79029 | Oil & Gas Operator | Jan 2002 |
| 7576 | Davey Corporation | Golden, CO 80401 | Oil & Gas Operator | Oct 2025 |
| 7577 | David A Waldron & Assoc | Wooster, OH 44691 | Oil & Gas Operator | Dec 2016 |
| 7578 | David A. Robinson | | Oil Operator | Jan 1999 |
| 7579 | David Crow | | Oil & Gas Operator | Nov 1985 |
| 7580 | David Crow Trustee Et Al | | Oil & Gas Operator | Jan 1986 |
| 7581 | David D. Davis | Benton, KS 67017 | Oil Operator | Dec 2009 |
| 7582 | David Divine Production | | Oil & Gas Operator | Nov 1997 |
| 7583 | David E & Edna P Keller | Sugar Grove, PA 16350-5930 | Oil & Gas Operator | Dec 2009 |
| 7584 | David E Morgan Inc | Danville, CA 94506-2035 | Oil & Gas Operator | Oct 2025 |
| 7585 | David G Hammond | Artesia, NM 88211 | Oil Operator | May 2013 |
| 7586 | David H Arrington Oil & Gas Inc | Midland, TX 79701 | Oil & Gas Operator | Oct 2025 |
| 7587 | David L Greene II LLC | | Oil Operator | Aug 2025 |
| 7588 | David L Hill | Bradford, PA 16701-0309 | Oil & Gas Operator | Dec 2024 |
| 7589 | David L. Whittington | | Gas Operator | Dec 1998 |
| 7590 | David L. Whittington Inc | | Gas Operator | Sep 2022 |
| 7591 | David Lesher Dba Lesher Oil | Reno, PA 16343-0293 | Oil Operator | Dec 2006 |
| 7592 | David Lynn Chiles | | Oil & Gas Operator | Aug 2020 |
| 7593 | David New Operating Co. Inc. | | Oil & Gas Operator | Feb 1999 |
| 7594 | David New Operating-Belle Exp | | Oil Operator | Mar 1990 |
| 7595 | David R Hill Inc | Byesville, OH 43723 | Oil & Gas Operator | Dec 2024 |
| 7596 | David Radcliff | | Oil & Gas Operator | Dec 2014 |
| 7597 | David Ridley Oil LLC | Tecumseh, OK 74873 | Oil Operator | Aug 2025 |
| 7598 | David, Phillip | Lawrenceville, IL 62439 | Oil & Gas Operator | Dec 2025 |
| 7599 | Davidson Energy Inc | Perry, OK 73077 | Oil & Gas Operator | Oct 2025 |
| 7600 | Davidson Gene | Perry, OK 73077-0144 | Oil & Gas Operator | Aug 2014 |