| 20501 | CASTLEMAN | Moore County, TX | Gas Property | May 2026 |
| 20502 | CASTLEMAN J. L | Young County, TX | Oil & Gas Property | May 2026 |
| 20503 | CASTLEWOOD | Lee County, TX | Oil & Gas Property | Jun 2026 |
| 20504 | CASTNER 34-20H | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 20505 | CASTO | Texas County, OK | Oil & Gas Property | Jun 2026 |
| 20506 | CASTO | Clay County, WV | Oil & Gas Property | Dec 2021 |
| 20507 | CASTO | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 20508 | CASTO UNIT I | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 20509 | CASTO, HA | Upshur County, WV | Oil & Gas Property | Dec 2021 |
| 20510 | CASTO, J. B | Clay County, WV | Oil & Gas Property | Dec 2021 |
| 20511 | CASTO, WENDELL | Jackson County, WV | Oil & Gas Property | Dec 2021 |
| 20512 | CASTO, WILB | Barbour County, WV | Gas Property | Dec 2021 |
| 20513 | CASTO, WILLIAM | Jackson County, WV | Gas Property | Dec 2021 |
| 20514 | CASTO-CT FOUR (SA) A 1H | Denton County, TX | Gas Property | Jun 2026 |
| 20515 | CASTO-PONDER-CT FOUR (SA) | Denton County, TX | Gas Property | Jun 2026 |
| 20516 | CASTO-STEVENS (SA) A 1H | Denton County, TX | Gas Property | Jun 2026 |
| 20517 | CASTON | Navarro County, TX | Oil & Gas Property | Jul 2025 |
| 20518 | CASTON L | Guernsey County, OH | Oil & Gas Property | Jun 2026 |
| 20519 | CASTON N | Guernsey County, OH | Oil & Gas Property | Jun 2026 |
| 20520 | CASTONGUAY | Blaine County, OK | Oil & Gas Property | Jun 2026 |
| 20521 | CASTONGUAY | Blaine County, OK | Oil & Gas Property | Jun 2026 |
| 20522 | CASTOR | Weld County, CO | Oil & Gas Property | May 2026 |
| 20523 | CASTOR | Weld County, CO | Oil & Gas Property | May 2026 |
| 20524 | CASTOR FEDERAL LD1 | Weld County, CO | Oil & Gas Property | May 2026 |
| 20525 | CASTOR HANS | Weld County, CO | Oil & Gas Property | Nov 2019 |
| 20526 | CASTOR LD | Weld County, CO | Oil & Gas Property | May 2026 |
| 20527 | CASTRO ET AL UNIT | Washington County, PA | Gas Property | Jun 2026 |
| 20528 | CASTRO GAS UNIT #2 | Chambers County, TX | Oil & Gas Property | Jun 2026 |
| 20529 | CASTROGIOVANNI A | Susquehanna County, PA | Gas Property | Jun 2026 |
| 20530 | CASTRUCCIO | Los Angeles County, CA | Oil & Gas Property | Jun 2026 |
| 20531 | CASWELL | Montague County, TX | Oil & Gas Property | Jun 2026 |
| 20532 | CASWELL | Wise County, TX | Oil & Gas Property | Jun 2026 |
| 20533 | CASWELL | Montague County, TX | Oil & Gas Property | Jun 2026 |
| 20534 | CASWELL 23 FEDERAL | Lea County, NM | Oil & Gas Property | Jul 2026 |
| 20535 | CASWELL TRUST | Hardin County, TX | Oil & Gas Property | Apr 2021 |
| 20536 | CASWELL-CHILDERS | Wise County, TX | Oil & Gas Property | Jun 2026 |
| 20537 | CAT CLAW | Irion County, TX | Oil & Gas Property | Jun 2026 |
| 20538 | CAT CLAW A | Reagan County, TX | Oil & Gas Property | Jun 2026 |
| 20539 | CAT CREEK | Johnson County, WY | Gas Property | Jun 2026 |
| 20540 | CAT CREEK UNIT | Petroleum County, MT | Oil Property | Jun 2026 |
| 20541 | CAT CS FEDERAL | Johnson County, WY | Gas Property | Dec 2019 |
| 20542 | CAT EYES UNIT | Atascosa County, TX | Oil & Gas Property | Jun 2026 |
| 20543 | CAT FED 3873-1201 | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 20544 | CAT ISLAND 16 STATE | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 20545 | CAT LANTA 16 4 FEDERAL COM | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 20546 | CAT-DRAW | Rio Arriba County, NM | Gas Property | Jun 2026 |
| 20547 | CATAHOULA | Catahoula Parish, LA | Oil & Gas Property | Jan 2025 |
| 20548 | CATALANO | Erie County, NY | Gas Property | Dec 2025 |
| 20549 | CATALINA | Dunn County, ND | Oil & Gas Property | Jun 2026 |
| 20550 | CATALINA | Carbon County, WY | Gas Property | Jun 2026 |
| 20551 | CATALINA 25 | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 20552 | CATALINA 30 EH STATE | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 20553 | CATALYST 5211 | Forest County, PA | Oil & Gas Property | Dec 2025 |
| 20554 | CATAPULT | Converse County, WY | Oil & Gas Property | Jul 2026 |
| 20555 | CATAPULT | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 20556 | CATARINA EAST | Dimmit County, TX | Oil & Gas Property | Jun 2026 |
| 20557 | CATCH FEDERAL 5201 11-12H | McKenzie County, ND | Oil & Gas Property | Jun 2026 |
| 20558 | CATCHER 40 | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 20559 | CATCLAW AGM STATE COM | Eddy County, NM | Oil & Gas Property | Dec 2021 |
| 20560 | CATCLAW DRAW | Eddy County, NM | Oil & Gas Property | Jul 2026 |
| 20561 | CATCLAW STATE | Culberson County, TX | Oil & Gas Property | Jun 2026 |
| 20562 | CATCLAW UNIT 2-31 | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 20563 | CATE, J | Brown County, TX | Oil & Gas Property | Jun 2026 |
| 20564 | CATER | Jack County, TX | Oil & Gas Property | Jun 2026 |
| 20565 | CATERPILLAR 1506 | Kingfisher County, OK | Oil & Gas Property | Jun 2026 |
| 20566 | CATERPILLAR FE | Johnson County, WY | Oil & Gas Property | Jul 2026 |
| 20567 | CATES | Kern County, CA | Oil & Gas Property | Jul 2026 |
| 20568 | CATES | Sequoyah County, OK | Gas Property | Oct 2025 |
| 20569 | CATES | Hughes County, OK | Oil Property | Apr 2012 |
| 20570 | CATES | Johnson County, TX | Gas Property | Sep 2020 |
| 20571 | CATES | Beaver County, OK | Oil & Gas Property | Jun 2026 |
| 20572 | CATES | Parker County, TX | Oil & Gas Property | Jun 2026 |
| 20573 | CATES | Kent County, TX | Oil Property | Jun 2026 |
| 20574 | CATES | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 20575 | CATES | Beaver County, OK | Oil & Gas Property | Feb 2017 |
| 20576 | CATES | Wise County, TX | Oil & Gas Property | Jun 2026 |
| 20577 | CATES | Hughes County, OK | Oil & Gas Property | Jun 2026 |
| 20578 | CATES | Beaver County, OK | Oil & Gas Property | Jun 2026 |
| 20579 | CATES #1 | Sequoyah County, OK | Gas Property | Sep 2013 |
| 20580 | CATES 1 | Caddo County, OK | Oil & Gas Property | Aug 2018 |
| 20581 | CATES D | Rusk County, TX | Oil & Gas Property | May 2026 |
| 20582 | CATES PARTNER UNIT | Denton County, TX | Oil & Gas Property | Jun 2026 |
| 20583 | CATESBY | Harper County, OK | Oil & Gas Property | Jun 2026 |
| 20584 | CATESBY OPER | Harper County, OK | Oil & Gas Property | Jun 2026 |
| 20585 | CATESBY OPER | Ellis County, OK | Oil & Gas Property | Jun 2026 |
| 20586 | CATESVILLE UNIT | Union County, AR | Oil & Gas Property | Jul 2026 |
| 20587 | CATFISH | Kern County, CA | Oil & Gas Property | Jun 2026 |
| 20588 | CATFISH | Wood County, TX | Oil & Gas Property | Jun 2026 |
| 20589 | CATFISH | Loving County, TX | Oil & Gas Property | Apr 2026 |
| 20590 | CATFISH | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 20591 | CATFISH HUNTER 12-1 | Glasscock County, TX | Oil & Gas Property | Jun 2026 |
| 20592 | CATFISH STATE | Eddy County, NM | Oil Property | Mar 2026 |
| 20593 | CATHALEENE | Clearfield County, PA | Gas Property | Dec 2025 |
| 20594 | CATHCART NYAL M & LEWIS | Clearfield County, PA | Gas Property | Dec 2025 |
| 20595 | CATHEDRAL | Sweetwater County, WY | Oil & Gas Property | Jun 2026 |
| 20596 | CATHEDRAL FEDERAL | Rio Blanco County, CO | Gas Property | May 2026 |
| 20597 | CATHEDRAL STATE 57-6 UNIT | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 20598 | CATHER | Harper County, KS | Oil & Gas Property | May 2026 |
| 20599 | CATHER | Harper County, KS | Oil & Gas Property | Dec 2023 |
| 20600 | CATHER, ALMEDA | Lewis County, WV | Oil & Gas Property | Sep 2021 |