| 1401 | Dundee Oil & Supply Inc | Tulsa, OK 74101 | Oil & Gas Operator | Apr 2001 |
| 1402 | Dundee Petroleum, Inc. | Buffalo Gap, TX 79508 | Oil & Gas Operator | Aug 2003 |
| 1403 | Dune Oil And Gas, Inc. | Odessa, TX 79768 | Oil & Gas Operator | Aug 2006 |
| 1404 | Dune Operating Company | Dallas, TX 75201 | Oil & Gas Operator | Jun 2016 |
| 1405 | Dune Petroleum Corporation | Midland, TX 79702 | Oil & Gas Operator | Apr 1997 |
| 1406 | Dune Resources Inc | Tulsa, OK 74103 | Oil & Gas Operator | Jan 1993 |
| 1407 | Dunham'S Oil, LLC | Eureka, KS 67045 | Oil Operator | Dec 2023 |
| 1408 | Dunhill Expl. & Prod., LLC | | Oil & Gas Operator | Nov 2004 |
| 1409 | Dunhill Resources, Inc. | | Oil & Gas Operator | Nov 2005 |
| 1410 | Dunigan Operating Company, Inc. | Austin, TX 78755 | Oil & Gas Operator | May 2024 |
| 1411 | Dunigan Petroleum, Inc. | Dallas, TX 75201 | Oil & Gas Operator | Aug 2003 |
| 1412 | Dunkirk City School District | Dunkirk, NY 14048 | Gas Operator | Dec 2022 |
| 1413 | Dunlap Drilling & Prod Inc | Glenpool, OK 74033-4206 | Oil & Gas Operator | Feb 2024 |
| 1414 | Dunlap Exploration, Inc. | Fort Worth, TX 76101 | Oil & Gas Operator | Nov 2016 |
| 1415 | Dunlap Jr E | | Oil & Gas Operator | May 1997 |
| 1416 | Dunlap Oil Company | Bristow, OK 74010-0837 | Oil & Gas Operator | Feb 2024 |
| 1417 | Dunlap Well Service Inc | Haskell, OK 74436 | Oil & Gas Operator | Sep 1993 |
| 1418 | Dunlap, Rodge | Olney, TX 76374 | Oil & Gas Operator | Aug 2002 |
| 1419 | Dunn Energy LLC | Skiatook, OK 74070-4046 | Oil Operator | Sep 2022 |
| 1420 | Dunn Exploration Company, LLC | | Oil & Gas Operator | Jan 2024 |
| 1421 | Dunn Joseph L | Washington, PA 15301-6404 | Oil & Gas Operator | Dec 2023 |
| 1422 | Dunn'S Oil And Gas Lease Management LLC | | Oil & Gas Operator | Feb 2024 |
| 1423 | Dunn'S Tank Service Inc | Fox, OK 73435-0232 | Oil Operator | Sep 2014 |
| 1424 | Dunne Equities I | | Oil & Gas Operator | Dec 1995 |
| 1425 | Dunne Equities Operating Inc | Houston, TX 77057 | Oil & Gas Operator | Aug 2022 |
| 1426 | Dunne Equities, Inc. | Wichita, KS 67226 | Oil & Gas Operator | Apr 2014 |
| 1427 | Dunne Investments Operating, Inc. | Wichita, KS 67226 | Oil Operator | Mar 2002 |
| 1428 | Dunne Oil Co. | Wichita, KS 67202 | Oil Operator | Apr 1999 |
| 1429 | Dunne-Gardner Pe | | Oil & Gas Operator | Nov 1992 |
| 1430 | Dunne-Gardner Petroleum, Inc. | Wichita, KS 67202 | Gas Operator | Jun 2022 |
| 1431 | Dunnewold Farms LLC | Clymer, NY 14724 | Gas Operator | Dec 2022 |
| 1432 | Dunsmoor, David E. | Grand Junction, CO 81504 | Oil Operator | Jul 1998 |
| 1433 | Dupke Roger Oil Co Inc | Reno, OH 45773 | Oil & Gas Operator | Dec 2004 |
| 1434 | Duplantis Energy, LLC | Pleasanton, TX 78064 | Oil Operator | May 2024 |
| 1435 | Dupont Oil Company | | Oil Operator | Feb 1998 |
| 1436 | Dupree And Dupree | | Oil Operator | Dec 1998 |
| 1437 | Durango Energy Inc | Chickasha, OK 73023 | Oil Operator | Dec 1999 |
| 1438 | Durango Exploration LLC | Oklahoma City, OK 73120-5309 | Oil & Gas Operator | Mar 2024 |
| 1439 | Durango Operating Co., Inc. | Abilene, TX 79604 | Oil & Gas Operator | Feb 2002 |
| 1440 | Durango Operating, LLC | Ridgeland, MS 39157-5109 | Oil & Gas Operator | Feb 2024 |
| 1441 | Durango Resources Corp. | Houston, TX 77043 | Oil & Gas Operator | May 2024 |
| 1442 | Durbin, Ronald R. | Moline, KS 67353 | Oil Operator | Dec 1988 |
| 1443 | Durham, Inc. | Midland, TX 79701 | Oil & Gas Operator | Jul 2016 |
| 1444 | Durossette Bill D | Haskell, OK 74436-1350 | Oil & Gas Operator | Jul 2004 |
| 1445 | Durossette Floyd R | Warner, OK 74469-0548 | Oil & Gas Operator | Apr 2011 |
| 1446 | Durossette Jr Jess | Haskell, OK 74436 | Oil Operator | Mar 2007 |
| 1447 | Durst Oil & Gas, Inc. | Point Pleasant, WV 25550 | Oil & Gas Operator | Dec 2021 |
| 1448 | Durst Oil Company | Corpus Chrsti, TX 78477 | Oil & Gas Operator | Sep 2000 |
| 1449 | Dust Bowl Oil Company, Inc. | Spencerport, NY 14559 | Oil Operator | Dec 2022 |
| 1450 | Duster Production, Inc. | Refugio, TX 78377 | Oil & Gas Operator | Oct 2011 |
| 1451 | Dustin Energy Inc | Warren, OH 44481 | Oil & Gas Operator | Dec 2023 |
| 1452 | Dustin Enterprise | Olathe, KS 66062 | Oil Operator | Feb 1998 |
| 1453 | Dusty Drilling & Producing Corp | New Lexington, OH 43764-1552-1552 | Oil & Gas Operator | Dec 2005 |
| 1454 | Dutch Ridge Gas Ventures, LLC | Charleston, WV 25339 | Oil & Gas Operator | Dec 2021 |
| 1455 | Dutton Bill J Oi | | Oil & Gas Operator | Oct 1992 |
| 1456 | Duval Gas Gathering Corporation | Austin, TX 78711 | Oil & Gas Operator | May 2024 |
| 1457 | Dvi | | Oil Operator | Dec 2008 |
| 1458 | Dvy Energy LLC | Hadley, PA 16130-2320 | Gas Operator | Dec 2023 |
| 1459 | DW Oil & Gas LLC | | Oil & Gas Operator | Feb 2024 |
| 1460 | Dwarf Oil Company | | Oil & Gas Operator | Dec 2023 |
| 1461 | Dwayne'S Engineering | | Oil Operator | Feb 2024 |
| 1462 | Dwight A Tipton | Lovington, NM 88260 | Oil & Gas Operator | Dec 2023 |
| 1463 | Dwight Tipton Et Al | Hobbs, NM 88240 | Oil & Gas Operator | Nov 2002 |
| 1464 | DWJS Inc | | Oil & Gas Operator | Jan 2024 |
| 1465 | DWP Oil & Gas | Wichita Falls, TX 76309 | Oil & Gas Operator | May 2024 |
| 1466 | Dyad Petroleum Company | Midland, TX 79710 | Oil & Gas Operator | Sep 2021 |
| 1467 | Dyco Petroleum Corporation | Tulsa, OK 74103 | Oil & Gas Operator | Mar 2015 |
| 1468 | Dye Walter M | Woodsfield, OH 43793 | Oil & Gas Operator | Dec 2022 |
| 1469 | Dye, Jennifer J. | South Dayton, NY 14138 | Gas Operator | Dec 2022 |
| 1470 | Dyer Dale E Dba The Loving Company | Tulsa, OK 74157-9451 | Oil & Gas Operator | Feb 2024 |
| 1471 | Dyer J G | | Oil & Gas Operator | May 1985 |
| 1472 | Dyer, Charles Wilbur | Longton, KS 67352 | Oil Operator | Jul 2023 |
| 1473 | Dyersdale Energy, L.P. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 1474 | Dyersdale Production Co, Inc. | Kilgore, TX 75663 | Oil & Gas Operator | May 2024 |
| 1475 | Dykes Oil Co. | | Oil Operator | Dec 2001 |
| 1476 | Dym Energy, Inc. | Celina, TX 75009 | Oil & Gas Operator | Apr 2018 |
| 1477 | Dynaco, Incorporated | | Oil & Gas Operator | Dec 1980 |
| 1478 | Dynamic Development Inc | | Oil & Gas Operator | Mar 2024 |
| 1479 | Dynamic Exploration PTRS, LLC | | Oil & Gas Operator | Jan 2024 |
| 1480 | Dynamic Exploration, Inc. | | Oil & Gas Operator | Oct 2003 |
| 1481 | Dynamic Offshore Res. NS, LLC | Houston, TX 77010 | Oil & Gas Operator | May 2010 |
| 1482 | Dynamic Offshore Resources, LLC | Houston, TX 77042 | Oil & Gas Operator | May 2024 |
| 1483 | Dynamic Petroleum Res., Inc. | Houston, TX 77068 | Oil & Gas Operator | Jul 1994 |
| 1484 | Dynamic Production, Inc. | Fort Worth, TX 76106 | Oil & Gas Operator | May 2024 |
| 1485 | Dyne Exploration Company | Plano, TX 75093-6512 | Oil & Gas Operator | Apr 2020 |
| 1486 | Dyne Oil & Gas,Inc. | Borger, TX 79008 | Oil & Gas Operator | Dec 2017 |
| 1487 | Dyno Energy LLC | Oklahoma City, OK 73154-0964 | Oil & Gas Operator | Feb 2024 |
| 1488 | Dyson Energy Operating, LLC | Bryan, TX 77802 | Oil & Gas Operator | Jun 2018 |
| 1489 | Dzurik Interests, Inc. | | Oil & Gas Operator | Nov 2023 |