| 8601 | Duncan, Raymond T | Denver, CO 80210 | Oil & Gas Operator | Feb 1996 |
| 8602 | Duncan-Taylor & Schumacher | | Oil & Gas Operator | Nov 1987 |
| 8603 | Dundee Oil & Supply Inc | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2001 |
| 8604 | Dundee Petroleum, Inc. | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 2003 |
| 8605 | Dune Oil And Gas, Inc. | Odessa, TX 79768 | Oil & Gas Operator | Aug 2006 |
| 8606 | Dune Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Jun 2016 |
| 8607 | Dune Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1997 |
| 8608 | Dune Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 1993 |
| 8609 | Dunham'S Oil, LLC | Eureka, KS 67045 | Oil Operator | May 2025 |
| 8610 | Dunhill Expl. & Prod., LLC | | Oil & Gas Operator | Nov 2004 |
| 8611 | Dunhill Resources, Inc. | | Oil & Gas Operator | Nov 2005 |
| 8612 | Dunigan Operating Company, Inc. | Austin, TX 78755 | Oil & Gas Operator | Oct 2025 |
| 8613 | Dunigan Petroleum, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 8614 | Dunkin Oil And Gas LLC | Wynewood, OK 73098-9196 | Oil Operator | May 2025 |
| 8615 | Dunkirk City School District | Dunkirk, NY 14048 | Gas Operator | Dec 2024 |
| 8616 | Dunlap Drilling And Producing, Inc | Glenpool, OK 74033-4206 | Oil & Gas Operator | Jul 2025 |
| 8617 | Dunlap Exploration, Inc. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2016 |
| 8618 | Dunlap Oil Company | Bristow, OK 74010 | Oil & Gas Operator | Jun 2025 |
| 8619 | Dunlap Well Service Inc | Haskell, OK 74436 | Oil & Gas Operator | Sep 1993 |
| 8620 | Dunlap, Rodge | Olney, TX 76374 | Oil & Gas Operator | Aug 2002 |
| 8621 | Dunn Energy LLC | Skiatook, OK 74070-4046 | Oil Operator | Sep 2022 |
| 8622 | Dunn Exploration Company, LLC | | Oil & Gas Operator | Jan 2025 |
| 8623 | Dunn Joseph L | Washington, PA 15301-6404 | Oil & Gas Operator | Dec 2024 |
| 8624 | Dunn Resources, LLC | Shreveport, LA 71115 | Oil & Gas Operator | Mar 2023 |
| 8625 | Dunn'S Oil And Gas Lease Management LLC | Ardmore, OK 73401 | Oil & Gas Operator | Jun 2025 |
| 8626 | Dunne Equities I | | Oil & Gas Operator | Dec 1995 |
| 8627 | Dunne Equities Operating, Inc. | Houston, TX 77057 | Oil & Gas Operator | Aug 2022 |
| 8628 | Dunne Equities, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Apr 2014 |
| 8629 | Dunne Investments Operating, Inc. | Wichita, KS 67226 | Oil Operator | Mar 2002 |
| 8630 | Dunne Oil Co. | Wichita, KS 67202 | Oil Operator | Apr 1999 |
| 8631 | Dunne-Gardner Pe | | Oil & Gas Operator | Nov 1992 |
| 8632 | Dunne-Gardner Petroleum, Inc. | Wichita, KS 67202 | Gas Operator | Jun 2022 |
| 8633 | Dunnewold Farms LLC | Clymer, NY 14724 | Gas Operator | Dec 2024 |
| 8634 | Dunsmoor, David E. | Grand Junction, CO 81504 | Oil Operator | Jul 1998 |
| 8635 | Dupke Roger Oil Co Inc | Reno, OH 45773 | Oil & Gas Operator | Dec 2004 |
| 8636 | Duplantis Energy, LLC | Pleasanton, TX 78064 | Oil Operator | Oct 2025 |
| 8637 | Dupont Oil Company | | Oil Operator | Feb 1998 |
| 8638 | Dupree And Dupree | | Oil Operator | Dec 1998 |
| 8639 | Durango Energy Inc | Chickasha, OK 73023 | Oil Operator | Dec 1999 |
| 8640 | Durango Exploration LLC | Oklahoma City, OK 73120-5309 | Oil & Gas Operator | Jul 2025 |
| 8641 | Durango Operating Co., Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2002 |
| 8642 | Durango Operating, LLC | Madison, MS 39110 | Oil & Gas Operator | Jul 2025 |
| 8643 | Durango Resources Corp. | Houston, TX 77043 | Oil & Gas Operator | Oct 2025 |
| 8644 | Durbin, Ronald R. | Moline, KS 67353 | Oil Operator | Dec 1988 |
| 8645 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 8646 | Duroc Exploration LLC | Bixby, OK 74008 | Oil Operator | Jun 2025 |
| 8647 | Durossette Bill D | Haskell, OK 74436-1350 | Oil & Gas Operator | Jul 2004 |
| 8648 | Durossette Floyd R | Warner, OK 74469-0548 | Oil & Gas Operator | Apr 2011 |
| 8649 | Durossette Jr Jess | Haskell, OK 74436 | Oil Operator | Mar 2007 |
| 8650 | Durst Oil & Gas, Inc. | Point Pleasant, WV 25550 | Oil & Gas Operator | Dec 2021 |
| 8651 | Durst Oil Company | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Sep 2000 |
| 8652 | Dust Bowl Oil Company, Inc. | Spencerport, NY 14559 | Oil Operator | Dec 2024 |
| 8653 | Duster Production, Inc. | Refugio, TX 78377 | Oil & Gas Operator | Oct 2011 |
| 8654 | Dustin Energy Inc | Warren, OH 44481 | Oil & Gas Operator | Dec 2024 |
| 8655 | Dustin Enterprise | Olathe, KS 66062 | Oil Operator | Feb 1998 |
| 8656 | Dusty Drilling & Producing Corp | New Lexington, OH 43764-1552 | Oil & Gas Operator | Dec 2005 |
| 8657 | Dutch Ridge Gas Ventures, LLC | Charleston, WV 25339 | Oil & Gas Operator | Dec 2021 |
| 8658 | Dutton Bill J Oi | | Oil & Gas Operator | Oct 1992 |
| 8659 | Duty Oil & Gas Prod Co | Akron, OH 44306 | Oil & Gas Operator | Dec 1997 |
| 8660 | Duval Gas Gathering Corporation | Austin, TX 78711 | Oil & Gas Operator | Oct 2025 |
| 8661 | Dvi | | Oil Operator | Dec 2008 |
| 8662 | Dvy Energy LLC | Hadley, PA 16130-2320 | Gas Operator | Dec 2024 |
| 8663 | Dwarf Oil Company | | Oil & Gas Operator | Mar 2025 |
| 8664 | Dwayne'S Engineering | | Oil Operator | Jul 2025 |
| 8665 | Dwight A Tipton | Lovington, NM 88260 | Oil & Gas Operator | Apr 2025 |
| 8666 | Dwight Tipton Et Al | Hobbs, NM 88240 | Oil & Gas Operator | Nov 2002 |
| 8667 | DWJS Inc | Oklahoma City, OK 73159 | Oil & Gas Operator | Sep 2024 |
| 8668 | DWP Oil & Gas | Wichita Falls, TX 76309 | Oil & Gas Operator | Oct 2025 |
| 8669 | DWR Oil Company | Merkel, TX 79536 | Oil & Gas Operator | Aug 2025 |
| 8670 | Dyad Petroleum Company | Midland, TX 79710 | Oil & Gas Operator | Sep 2021 |
| 8671 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 8672 | Dye Walter M | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2022 |
| 8673 | Dye, Jennifer J. | South Dayton, NY 14138 | Gas Operator | Dec 2024 |
| 8674 | Dyer Dale E Dba The Loving Company | Tulsa, OK 74107 | Oil & Gas Operator | Jul 2025 |
| 8675 | Dyer J G | | Oil & Gas Operator | May 1985 |
| 8676 | Dyer, Charles Wilbur | Longton, KS 67352 | Oil Operator | Nov 2024 |
| 8677 | Dyersdale Energy, L.P. | Kilgore, TX 75663 | Oil & Gas Operator | Oct 2025 |
| 8678 | Dyersdale Production Co, Inc. | Houston, TX 77019 | Oil & Gas Operator | Oct 2025 |
| 8679 | Dykes Oil Co. | | Oil Operator | Dec 2001 |
| 8680 | Dykstra Tile Co LLC | | Oil Operator | Apr 2002 |
| 8681 | Dym Energy, Inc. | Celina, TX 75009 | Oil & Gas Operator | Apr 2018 |
| 8682 | Dynaco, Incorporated | | Oil & Gas Operator | Dec 1980 |
| 8683 | Dynamic Development Inc | | Oil & Gas Operator | Aug 2025 |
| 8684 | Dynamic Exploration PTRS, LLC | | Oil & Gas Operator | Nov 2024 |
| 8685 | Dynamic Exploration, Inc. | | Oil & Gas Operator | Oct 2003 |
| 8686 | Dynamic Offshore Res. NS, LLC | Houston, TX 77010 | Oil & Gas Operator | May 2010 |
| 8687 | Dynamic Offshore Resources, LLC | Houston, TX 77042 | Oil & Gas Operator | Oct 2025 |
| 8688 | Dynamic Petroleum Res., Inc. | Houston, TX 77068 | Oil & Gas Operator | Jul 1994 |
| 8689 | Dynamic Production, Inc. | Fort Worth, TX 76106 | Oil & Gas Operator | Oct 2025 |
| 8690 | Dyne Exploration Company | Plano, TX 75093-6512 | Oil & Gas Operator | Apr 2020 |
| 8691 | Dyne Oil & Gas,Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2017 |
| 8692 | Dyno Energy LLC | Oklahoma City, OK 73118 | Oil & Gas Operator | Jun 2025 |
| 8693 | Dyson Energy Operating, LLC | Bryan, TX 77802 | Oil & Gas Operator | Jun 2018 |
| 8694 | Dzurik Interests, Inc. | | Oil & Gas Operator | Dec 2024 |
| 8695 | E & B Equipment | Liberty, TX 77575 | Oil & Gas Operator | Feb 2010 |
| 8696 | E & B Natural Resources Management | Guilderland Centek, NY 12085 | Oil & Gas Operator | Aug 2025 |
| 8697 | E & B Natural Resources Management Corporation | Hays, KS 67601 | Oil & Gas Operator | Aug 2025 |
| 8698 | E & E Construction Company | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 8699 | E & E Drilling Co., Inc. | Wichita Falls, TX 76308 | Oil Operator | Oct 2025 |
| 8700 | E & E Enterprises | Enid, OK 73703-1420 | Oil & Gas Operator | Nov 2014 |