| 501 | NEAL, AMERADA | Upton County, TX | Oil & Gas Property | Jan 2018 |
| 502 | NEAL-POWELL UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 503 | NICKEL SALOON | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 504 | NIGHT FLIGHT 4738 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 505 | NORMA | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 506 | NORMA P1 UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 507 | NORMA UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 508 | NORTH BROOK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 509 | NORTH PEMBROOK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 510 | OBERHOLTZER | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 511 | OHARROW | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 512 | OLD BLUE 25 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 513 | ONEAL B. J. -NORTH | Upton County, TX | Oil & Gas Property | Jan 2017 |
| 514 | ONEAL SAN ANDRES UNIT | Upton County, TX | Oil & Gas Property | Jan 2017 |
| 515 | ONEAL, B.J. ETAL | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 516 | ONEAL,BILL JOHN NE/4 SEC 5 UN | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 517 | OWENS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 518 | OWENS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 519 | OWENS FELMONT | Upton County, TX | Oil & Gas Property | Jul 2022 |
| 520 | OWENS-CRAVENS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 521 | PATTY | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 522 | PAULA | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 523 | PAULINE | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 524 | PEARL 11-30 | Upton County, TX | Oil & Gas Property | Dec 2023 |
| 525 | PECK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 526 | PECK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 527 | PEGASUS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 528 | PEGASUS ELLENBURGER UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 529 | PEGASUS FIELD UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 530 | PEGASUS PENNSYLVANIAN UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 531 | PEGASUS SPRABERRY UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 532 | PEMBROOK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 533 | PEMBROOK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 534 | PEMBROOK | Upton County, TX | Oil & Gas Property | Dec 2018 |
| 535 | PENNY | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 536 | PERIDOT 101 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 537 | POLARIS 4750 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 538 | PONDEROSA | Upton County, TX | Oil & Gas Property | Dec 2023 |
| 539 | POWELL | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 540 | POWELL | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 541 | POWELL VIRGIL | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 542 | POWELL-NEAL UNIT | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 543 | PRIEST | Upton County, TX | Oil & Gas Property | Jan 2023 |
| 544 | PROCTOR | Upton County, TX | Oil & Gas Property | Oct 2022 |
| 545 | QUAIL HOLLOW 174 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 546 | QUAIL RANCH | Upton County, TX | Oil & Gas Property | Dec 2023 |
| 547 | R S WINDHAM | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 548 | R.A.B. DAVIDSON | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 549 | RAB 34 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 550 | RACHEAL | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 551 | RADFORD GROCERY | Upton County, TX | Oil & Gas Property | Jan 2010 |
| 552 | RAILWAY RANCH | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 553 | RANKIN | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 554 | RANKIN MIPA | Upton County, TX | Oil & Gas Property | Dec 2023 |
| 555 | RATLIFF | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 556 | RATLIFF | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 557 | RATLIFF 3 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 558 | RATLIFF 9-7 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 559 | RAY REED 3 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 560 | REAGAN | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 561 | REBECCA JEAN | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 562 | REESE | Upton County, TX | Oil & Gas Property | Dec 1996 |
| 563 | REESE 15 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 564 | RENEGADE | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 565 | REXENE | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 566 | REYNOLDS | Upton County, TX | Oil & Gas Property | Aug 2023 |
| 567 | RHONDA | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 568 | RICKER | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 569 | RINN | Upton County, TX | Oil & Gas Property | Oct 2022 |
| 570 | ROBBIE 17 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 571 | ROBBIE JANE | Upton County, TX | Oil & Gas Property | Jun 2023 |
| 572 | ROBBINS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 573 | ROGERS 3-40 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 574 | ROGERS 35 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 575 | ROSS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 576 | ROSS R.L | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 577 | ROY 86 | Upton County, TX | Oil & Gas Property | Nov 2019 |
| 578 | RUHMAN E. P | Upton County, TX | Oil & Gas Property | May 2021 |
| 579 | RUHMANN E. P | Upton County, TX | Oil & Gas Property | Feb 2022 |
| 580 | RYBURN C.W. A/C 2 | Upton County, TX | Oil & Gas Property | Jun 2022 |
| 581 | SABO | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 582 | SADIE 07-08 | Upton County, TX | Oil & Gas Property | Dec 2023 |
| 583 | SALLYE | Upton County, TX | Oil & Gas Property | Apr 2022 |
| 584 | SAMANTHA | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 585 | SAMMIE 47 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 586 | SANDY | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 587 | SANDY REXENE (SA) | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 588 | SANGER-BROTHERS | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 589 | SAPPHIRE 102 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 590 | SARAH | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 591 | SARAH 27 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 592 | SCHELLHORN | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 593 | SEBASTIAN 19 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 594 | SEQUOIA | Upton County, TX | Oil & Gas Property | Nov 2019 |
| 595 | SHACKELFORD | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 596 | SHAQ | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 597 | SHAUNA 9 | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 598 | SHELL-UNIVERSITY | Upton County, TX | Oil & Gas Property | Dec 2023 |
| 599 | SHIRK | Upton County, TX | Oil & Gas Property | Jan 2024 |
| 600 | SHIRK | Upton County, TX | Oil & Gas Property | Jan 2024 |