| 501 | CAGLE GAS UNIT | Freestone County, TX | Oil & Gas Property | Jun 2026 |
| 502 | CAGLE-HARRIS | Rusk County, TX | Oil & Gas Property | May 2026 |
| 503 | CAHAL 4-15C4 | Duchesne County, UT | Oil & Gas Property | Jun 2026 |
| 504 | CAHILL | Fisher County, TX | Oil & Gas Property | Oct 2019 |
| 505 | CAHILL | Haskell County, TX | Oil Property | Jun 2026 |
| 506 | CAHILL REALTY BUSINESS UNIT | Bradford County, PA | Gas Property | Jun 2026 |
| 507 | CAHN | Kern County, CA | Oil & Gas Property | Jul 2026 |
| 508 | CAHN GAS COM | San Juan County, NM | Gas Property | Jun 2026 |
| 509 | CAHOJ | Rawlins County, KS | Oil Property | Aug 2020 |
| 510 | CAHOJ | Rawlins County, KS | Oil Property | Apr 1995 |
| 511 | CAHOON | Sebastian County, AR | Gas Property | Jun 2024 |
| 512 | CAHOON | Medina County, OH | Oil & Gas Property | Dec 2020 |
| 513 | CAHOON UNIT | Liberty County, TX | Oil & Gas Property | Aug 2024 |
| 514 | CAIBY | Noble County, OK | Oil & Gas Property | Feb 2020 |
| 515 | CAIBY | Noble County, OK | Oil & Gas Property | May 2026 |
| 516 | CAIG 2 | Logan County, OK | Oil & Gas Property | May 2026 |
| 517 | CAIN | Payne County, OK | Oil & Gas Property | May 2026 |
| 518 | CAIN | Rice County, KS | Gas Property | Apr 2026 |
| 519 | CAIN | Texas County, OK | Oil & Gas Property | Mar 2026 |
| 520 | CAIN | San Juan County, NM | Oil & Gas Property | Jun 2026 |
| 521 | CAIN | Tuscaloosa County, AL | Gas Property | May 1996 |
| 522 | CAIN | San Juan County, NM | Oil & Gas Property | Jun 2026 |
| 523 | CAIN | Kingfisher County, OK | Oil & Gas Property | May 2026 |
| 524 | CAIN | San Juan County, NM | Oil & Gas Property | Jun 2026 |
| 525 | CAIN | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 526 | CAIN | Wood County, TX | Oil & Gas Property | Jun 2026 |
| 527 | CAIN | Love County, OK | Oil & Gas Property | Nov 2019 |
| 528 | CAIN | Bossier Parish, LA | Oil & Gas Property | Jan 2023 |
| 529 | CAIN | Dewey County, OK | Oil & Gas Property | May 2026 |
| 530 | CAIN | Gaines County, TX | Oil & Gas Property | Jun 2026 |
| 531 | CAIN | San Juan County, NM | Oil & Gas Property | Jun 2026 |
| 532 | CAIN | Midland County, TX | Oil & Gas Property | May 2023 |
| 533 | CAIN | Haskell County, KS | Oil & Gas Property | Mar 2026 |
| 534 | CAIN | Carroll County, OH | Oil & Gas Property | Jun 2026 |
| 535 | CAIN | Lea County, NM | Oil & Gas Property | May 2026 |
| 536 | CAIN | Lipscomb County, TX | Oil & Gas Property | Jun 2026 |
| 537 | CAIN 1 | Major County, OK | Oil & Gas Property | May 2026 |
| 538 | CAIN 16-63-2 | Laramie County, WY | Oil & Gas Property | Jul 2026 |
| 539 | CAIN 31 | La Plata County, CO | Gas Property | May 2026 |
| 540 | CAIN A UNIT | La Salle County, TX | Oil & Gas Property | Jun 2026 |
| 541 | CAIN H. C | Harris County, TX | Oil & Gas Property | Jun 2026 |
| 542 | CAIN J. D | Caldwell County, TX | Oil & Gas Property | Jun 2026 |
| 543 | CAIN LEWIS 28 21 16 13-13 | Blaine County, OK | Gas Property | May 2026 |
| 544 | CAIN PAULA | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 545 | CAIN RANCH | Montague County, TX | Oil & Gas Property | Jun 2026 |
| 546 | CAIN SOUTH 16-12-4 8H | Jefferson County, OH | Oil & Gas Property | Jun 2026 |
| 547 | CAIN TRUST 7-18-5 | Kingfisher County, OK | Oil & Gas Property | May 2026 |
| 548 | CAIN UNIT | Tarrant County, TX | Gas Property | Jun 2026 |
| 549 | CAIN, FARON | Harrison County, TX | Oil & Gas Property | Jun 2026 |
| 550 | CAIN, FRANCIS | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 551 | CAIN, FRANCIS | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 552 | CAIN, FRANCIS | Calhoun County, WV | Oil & Gas Property | Dec 2021 |
| 553 | CAIN, RICHARD | Marion County, WV | Oil & Gas Property | Dec 2021 |
| 554 | CAIN-LEMON | Ritchie County, WV | Oil & Gas Property | Dec 2021 |
| 555 | CAIN-RIDDLE | Calhoun County, WV | Oil & Gas Property | Aug 2016 |
| 556 | CAINE | Toole County, MT | Oil Property | Jun 2026 |
| 557 | CAINES HEIRS | Pike County, KY | Oil & Gas Property | Dec 2021 |
| 558 | CAIRNS | Kern County, CA | Oil Property | Sep 1985 |
| 559 | CAIRNS | Carroll County, OH | Oil & Gas Property | Dec 2025 |
| 560 | CAIRO | Atoka County, OK | Gas Property | May 2026 |
| 561 | CAIRO 10-4-59 | Howard County, TX | Oil & Gas Property | Jun 2026 |
| 562 | CAIRO NORTH UNIT | Henderson County, KY | Oil Property | Dec 2022 |
| 563 | CAITLIN | Coal County, OK | Oil & Gas Property | May 2026 |
| 564 | CAITLIN | Upton County, TX | Oil & Gas Property | Apr 2021 |
| 565 | CAITLIN-ABRAHAM 13 | Hemphill County, TX | Oil & Gas Property | Jun 2026 |
| 566 | CAKES 1907 | Kingfisher County, OK | Oil & Gas Property | May 2026 |
| 567 | CAL BAN | Cattaraugus County, NY | Oil & Gas Property | Dec 2025 |
| 568 | CAL ENERGY-USA | Kern County, CA | Oil & Gas Property | Mar 2019 |
| 569 | CAL MON 35 FEDERAL | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 570 | CAL MON MDP1 35 FEDERAL | Eddy County, NM | Oil & Gas Property | Jun 2026 |
| 571 | CAL PAC | Solano County, CA | Gas Property | Dec 1979 |
| 572 | CAL PAC | Ventura County, CA | Oil & Gas Property | Jul 2026 |
| 573 | CAL TECH | Kern County, CA | Oil Property | Nov 1999 |
| 574 | CAL-COALINGA-LAKEPORT | Fresno County, CA | Oil Property | Jan 1991 |
| 575 | CAL-MON | Eddy County, NM | Oil & Gas Property | Jul 2024 |
| 576 | CAL-MON | Eddy County, NM | Oil & Gas Property | Jun 2024 |
| 577 | CAL-MON | Crockett County, TX | Oil & Gas Property | Jun 2026 |
| 578 | CAL-MON 15 STATE | Lea County, NM | Oil & Gas Property | Jun 2026 |
| 579 | CAL-RAY | Harper County, OK | Oil & Gas Property | Jun 2018 |
| 580 | CALABRIA | Palo Pinto County, TX | Oil & Gas Property | Jun 2026 |
| 581 | CALABRIA-DOBBS VALLEY | Palo Pinto County, TX | Oil & Gas Property | Jul 2014 |
| 582 | CALAME | Frio County, TX | Oil & Gas Property | May 2026 |
| 583 | CALAME, R | Freestone County, TX | Oil & Gas Property | Jun 2026 |
| 584 | CALAMITY JANE | Reeves County, TX | Oil & Gas Property | Jun 2026 |
| 585 | CALAMITY SPR | Campbell County, WY | Oil Property | Sep 2017 |
| 586 | CALAWAY | Montague County, TX | Oil & Gas Property | Jun 2026 |
| 587 | CALCAGNO | San Joaquin County, CA | Oil & Gas Property | Jun 2023 |
| 588 | CALCARA | Barton County, KS | Oil & Gas Property | Apr 2026 |
| 589 | CALCO-SCHIEFERLE | Ventura County, CA | Oil & Gas Property | Jul 2026 |
| 590 | CALCOTE | Wheeler County, TX | Oil & Gas Property | Jun 2026 |
| 591 | CALCOTE 63 | Wheeler County, TX | Oil & Gas Property | Jun 2026 |
| 592 | CALDERWOOD FIU | Dewey County, OK | Oil & Gas Property | May 2026 |
| 593 | CALDWELL | Sterling County, TX | Oil & Gas Property | Jun 2026 |
| 594 | CALDWELL | Wayne County, WV | Gas Property | Dec 2021 |
| 595 | CALDWELL | Caddo Parish, LA | Oil & Gas Property | Dec 2024 |
| 596 | CALDWELL | Grant County, KS | Gas Property | Apr 2026 |
| 597 | CALDWELL | Wichita County, KS | Oil Property | Apr 2026 |
| 598 | CALDWELL | Kingfisher County, OK | Oil & Gas Property | May 2026 |
| 599 | CALDWELL | Caddo Parish, LA | Oil & Gas Property | Jan 2025 |
| 600 | CALDWELL | Colorado County, TX | Oil Property | Jul 2022 |