| 5401 | DUNCAN FEDERAL | McKenzie County, ND | Oil & Gas Property | Dec 2020 |
| 5402 | DUNCAN FORK | Washington County, PA | Oil & Gas Property | Dec 2025 |
| 5403 | DUNCAN GARDNER | Love County, OK | Oil & Gas Property | Jul 2024 |
| 5404 | DUNCAN GAS UNIT | Robertson County, TX | Oil & Gas Property | Jun 2026 |
| 5405 | DUNCAN J.J. GAS UNIT | Robertson County, TX | Oil & Gas Property | Jun 2026 |
| 5406 | DUNCAN LH FEDERAL | Chaves County, NM | Oil & Gas Property | Jun 2026 |
| 5407 | DUNCAN SHORES | Coal County, OK | Oil & Gas Property | Jun 2026 |
| 5408 | DUNCAN STATE COM | Chaves County, NM | Oil & Gas Property | Jul 2026 |
| 5409 | DUNCAN UNIT | Tarrant County, TX | Oil & Gas Property | Jun 2026 |
| 5410 | DUNCAN UNIT | Karnes County, TX | Oil & Gas Property | Jun 2026 |
| 5411 | DUNCAN UNIT | Lea County, NM | Oil & Gas Property | Aug 1996 |
| 5412 | DUNCAN UNIT | Karnes County, TX | Oil & Gas Property | Jun 2026 |
| 5413 | DUNCAN VANSCHAICK | Moffat County, CO | Oil & Gas Property | Apr 2026 |
| 5414 | DUNCAN, M E | Henderson County, KY | Oil Property | Dec 2020 |
| 5415 | DUNCAN, R | Henderson County, KY | Oil Property | Dec 2018 |
| 5416 | DUNCAN, S | Webster County, KY | Oil Property | Dec 2022 |
| 5417 | DUNCAN, W.C | Jack County, TX | Oil & Gas Property | May 2026 |
| 5418 | DUNCAN-BEAVERS ET AL UNIT | Coleman County, TX | Oil & Gas Property | Jun 2026 |
| 5419 | DUNCAN-WEMPLE | De Soto Parish, LA | Gas Property | Dec 2024 |
| 5420 | DUNDEE 4 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 5421 | DUNDEE LAND & COAL | Tuscarawas County, OH | Oil & Gas Property | Dec 2022 |
| 5422 | DUNDER | McIntosh County, OK | Oil & Gas Property | Jun 2026 |
| 5423 | DUNDICS UNIT | Mahoning County, OH | Oil & Gas Property | Dec 2025 |
| 5424 | DUNDY STATE | Dundy County, NE | Oil Property | Dec 2025 |
| 5425 | DUNE | Beaver County, OK | Oil & Gas Property | Jun 2026 |
| 5426 | DUNE | McClain County, OK | Oil & Gas Property | Jun 2026 |
| 5427 | DUNE RIDGE | Logan County, CO | Oil & Gas Property | Feb 2015 |
| 5428 | DUNE UNIT | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 5429 | DUNES | Morris County, TX | Oil & Gas Property | Jun 2026 |
| 5430 | DUNES | Winkler County, TX | Oil & Gas Property | Jun 2026 |
| 5431 | DUNFEE | Athens County, OH | Oil & Gas Property | Dec 2017 |
| 5432 | DUNFEE | Muskingum County, OH | Oil & Gas Property | Dec 2025 |
| 5433 | DUNGAN | Grady County, OK | Oil & Gas Property | Jun 2026 |
| 5434 | DUNGAN | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 5435 | DUNGAN 32-5 5 | Archuleta County, CO | Gas Property | May 2026 |
| 5436 | DUNGAN-KEY TRUST | San Patricio County, TX | Oil & Gas Property | Jun 2026 |
| 5437 | DUNHAM | Montgomery County, KS | Gas Property | Feb 2026 |
| 5438 | DUNHAM | Wayne County, OH | Oil & Gas Property | Dec 2025 |
| 5439 | DUNHAM | Bradford County, PA | Gas Property | Jun 2026 |
| 5440 | DUNHAM | Young County, TX | Oil & Gas Property | Jun 2026 |
| 5441 | DUNHAM DAVID | Panola County, TX | Oil & Gas Property | Jun 2026 |
| 5442 | DUNHAM, MITCHELL ET AL DUNHAM | Taylor County, WV | Oil & Gas Property | Dec 2021 |
| 5443 | DUNHAM-LEM | Chautauqua County, KS | Oil Property | May 2026 |
| 5444 | DUNIGAN | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 5445 | DUNIGAN 445 | Yoakum County, TX | Oil Property | Jun 2026 |
| 5446 | DUNIGAN STATE UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 5447 | DUNKEL | Russell County, KS | Oil Property | Dec 2023 |
| 5448 | DUNKIN | Wagoner County, OK | Gas Property | May 2019 |
| 5449 | DUNKIN | Wagoner County, OK | Oil & Gas Property | May 2019 |
| 5450 | DUNKIN | Garvin County, OK | Oil Property | Jun 2026 |
| 5451 | DUNKIN UNIT | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 5452 | DUNKIN UNIT | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 5453 | DUNKIRK UNIT | Irion County, TX | Oil & Gas Property | Jun 2026 |
| 5454 | DUNKLE | Butler County, KS | Oil Property | May 2026 |
| 5455 | DUNKLE'A' | Morton County, KS | Oil & Gas Property | May 2025 |
| 5456 | DUNKLEMAN | Cattaraugus County, NY | Gas Property | Dec 2025 |
| 5457 | DUNKLIN STANLEY J | Rusk County, TX | Oil & Gas Property | Jun 2026 |
| 5458 | DUNKS | Harris County, TX | Oil & Gas Property | Dec 2024 |
| 5459 | DUNLAP | Seward County, KS | Oil & Gas Property | Apr 2009 |
| 5460 | DUNLAP | Wood County, WV | Oil & Gas Property | Dec 2021 |
| 5461 | DUNLAP | Licking County, OH | Oil & Gas Property | Dec 2025 |
| 5462 | DUNLAP | Tuscarawas County, OH | Oil & Gas Property | Dec 2025 |
| 5463 | DUNLAP | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 5464 | DUNLAP | Freestone County, TX | Oil & Gas Property | Jun 2026 |
| 5465 | DUNLAP | Pecos County, TX | Oil & Gas Property | Jun 2026 |
| 5466 | DUNLAP | Stephens County, OK | Oil Property | May 2026 |
| 5467 | DUNLAP | Carter County, OK | Oil Property | Jun 2026 |
| 5468 | DUNLAP | Guernsey County, OH | Oil & Gas Property | Dec 2025 |
| 5469 | DUNLAP | Los Angeles County, CA | Oil & Gas Property | Jul 2026 |
| 5470 | DUNLAP | Garvin County, OK | Oil & Gas Property | Jun 2026 |
| 5471 | DUNLAP | Morrill County, NE | Oil & Gas Property | Feb 2024 |
| 5472 | DUNLAP | Creek County, OK | Oil Property | Jun 2026 |
| 5473 | DUNLAP | Jack County, TX | Oil & Gas Property | Jun 2026 |
| 5474 | DUNLAP | Dimmit County, TX | Oil & Gas Property | Jun 2026 |
| 5475 | DUNLAP | Stevens County, KS | Oil & Gas Property | May 2026 |
| 5476 | DUNLAP | Campbell County, WY | Oil & Gas Property | Jul 2026 |
| 5477 | DUNLAP | Love County, OK | Oil Property | Nov 2006 |
| 5478 | DUNLAP | Indiana County, PA | Gas Property | Dec 2025 |
| 5479 | DUNLAP | Stevens County, KS | Gas Property | May 2026 |
| 5480 | DUNLAP | Rooks County, KS | Oil Property | Apr 2026 |
| 5481 | DUNLAP B.H | Jim Wells County, TX | Oil & Gas Property | Jun 2026 |
| 5482 | DUNLAP GAS UNIT | Freestone County, TX | Oil & Gas Property | Jun 2026 |
| 5483 | DUNLAP II-MCGEE ALLOCATION 1H | Freestone County, TX | Oil & Gas Property | Jun 2026 |
| 5484 | DUNLAP J.G | Stephens County, TX | Oil & Gas Property | Jun 2026 |
| 5485 | DUNLAP, MRS. N. L. EST | Caldwell County, TX | Oil & Gas Property | Jun 2026 |
| 5486 | DUNLAP, N.L | Caldwell County, TX | Oil & Gas Property | Jun 2026 |
| 5487 | DUNLAP-CHES | Palo Pinto County, TX | Oil & Gas Property | May 2026 |
| 5488 | DUNLAP-EUBANK | Ward County, TX | Oil & Gas Property | Aug 2012 |
| 5489 | DUNLAP/BARNETT UNIT | Clearfield County, PA | Gas Property | Dec 2025 |
| 5490 | DUNLAVEY | Johnson County, TX | Gas Property | Jan 2016 |
| 5491 | DUNLIN 5892 3 | Mountrail County, ND | Oil & Gas Property | Jun 2026 |
| 5492 | DUNLOP | Beaver County, OK | Oil & Gas Property | Jun 2026 |
| 5493 | DUNLOP | Caddo County, OK | Oil & Gas Property | Jun 2026 |
| 5494 | DUNMAN | Greenwood County, KS | Oil Property | Jan 2026 |
| 5495 | DUNMAN-WILSON | Madison County, TX | Oil & Gas Property | May 2026 |
| 5496 | DUNMIRE UNIT | Butler County, PA | Gas Property | Jun 2026 |
| 5497 | DUNMOR FARMS | Washington County, OH | Oil & Gas Property | Dec 2025 |
| 5498 | DUNMORE | Big Horn County, MT | Gas Property | Jun 2017 |
| 5499 | DUNN | Comanche County, KS | Oil & Gas Property | May 2026 |
| 5500 | DUNN | Creek County, OK | Oil & Gas Property | May 2000 |