| 501 | OAKMONT 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 502 | OAKWOOD | Tarrant County, TX | Gas Property | Apr 2025 |
| 503 | OK CORRAL | Tarrant County, TX | Gas Property | Apr 2025 |
| 504 | OLCOTT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 505 | OLCOTT NORTH A UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 506 | OLD WEATHERFORD | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 507 | OLE GIESER UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 508 | OLIVER | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 509 | OSLER | Tarrant County, TX | Gas Property | Apr 2025 |
| 510 | OSPREY | Tarrant County, TX | Gas Property | Apr 2025 |
| 511 | PACIFIC UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 512 | PAGE STREET | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 513 | PALOS VERDES | Tarrant County, TX | Gas Property | Apr 2025 |
| 514 | PANAGOPOULOS UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 515 | PANTEGO | Tarrant County, TX | Gas Property | Apr 2025 |
| 516 | PANTHER HEIGHTS | Tarrant County, TX | Gas Property | Apr 2025 |
| 517 | PAPPAJOHN | Tarrant County, TX | Gas Property | Apr 2025 |
| 518 | PARROT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 519 | PARROT RIVERBEND UNIT E | Tarrant County, TX | Gas Property | Apr 2025 |
| 520 | PAYTON JAMES 1 | Tarrant County, TX | Gas Property | Apr 2025 |
| 521 | PEARCE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 522 | PEARL FEDERAL | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 523 | PEARL RANCH | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 524 | PEARSON | Tarrant County, TX | Gas Property | Apr 2025 |
| 525 | PEDEN UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 526 | PELICAN BAY | Tarrant County, TX | Gas Property | Apr 2025 |
| 527 | PENSKE | Tarrant County, TX | Gas Property | Jul 2019 |
| 528 | PERR A UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 529 | PERR B UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 530 | PERRYMAN | Tarrant County, TX | Gas Property | Apr 2025 |
| 531 | PETRIE UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 532 | PETRUS | Tarrant County, TX | Gas Property | Apr 2025 |
| 533 | PHASE III - MCKINNEY (SA) | Tarrant County, TX | Gas Property | Apr 2025 |
| 534 | PHASE III INVESTMENTS | Tarrant County, TX | Gas Property | Apr 2025 |
| 535 | PHASE III-TADLOCK (SA) 1 | Tarrant County, TX | Gas Property | Apr 2025 |
| 536 | PHOENIX | Tarrant County, TX | Gas Property | Apr 2025 |
| 537 | PIGG UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 538 | PLANET EARTH MIPA 3H | Tarrant County, TX | Gas Property | Apr 2025 |
| 539 | PLANET MARS MIPA 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 540 | PLANET TRT | Tarrant County, TX | Gas Property | Apr 2025 |
| 541 | PLANET ZERO MIPA 4H | Tarrant County, TX | Gas Property | Apr 2025 |
| 542 | PLEASANT RIDGE | Tarrant County, TX | Gas Property | Apr 2025 |
| 543 | POLK SALLY ANNA UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 544 | POLY | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 545 | POLYHAWK B VOL MIPA 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 546 | POLYHAWK MIPA 7H | Tarrant County, TX | Gas Property | Apr 2025 |
| 547 | PORTER ET AL | Tarrant County, TX | Oil & Gas Property | Sep 2023 |
| 548 | POTTER-PURCELL | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 549 | POWELL-COZART UN | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 550 | PRICE | Tarrant County, TX | Gas Property | Apr 2025 |
| 551 | PRIME RAIL UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 552 | PRINCETON 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 553 | PROFESSOR UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 554 | PUMPKIN | Tarrant County, TX | Gas Property | Sep 2017 |
| 555 | PURSELLEY UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 556 | PVI UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 557 | PYRAMID ACRES UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 558 | QUANT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 559 | QUANT-FORRESTER UNIT SA 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 560 | QUARRY | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 561 | R-SO 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 562 | RAFAEL UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 563 | RAILHEAD | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 564 | RAILHEAD SOUTH UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 565 | RALL RANCH | Tarrant County, TX | Gas Property | Apr 2025 |
| 566 | RAMBO | Tarrant County, TX | Gas Property | Apr 2025 |
| 567 | RAMEY 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 568 | RAWDON GREGORY | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 569 | REED MITCHELL UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 570 | REGAN ARLINGTON A UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 571 | REGENCY | Tarrant County, TX | Gas Property | Nov 2016 |
| 572 | REMINGTON STATION UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 573 | RENFRO | Tarrant County, TX | Gas Property | Feb 2025 |
| 574 | RENZO | Tarrant County, TX | Gas Property | Apr 2025 |
| 575 | REVEILLE | Tarrant County, TX | Gas Property | Feb 2016 |
| 576 | RICE LOH | Tarrant County, TX | Gas Property | Apr 2025 |
| 577 | RICHARDSON | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 578 | RICHARDSON VIRGINIA UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 579 | RICHLAND HILLS | Tarrant County, TX | Gas Property | Apr 2025 |
| 580 | RICKETTS UNIT 1H | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 581 | RIDGLEA | Tarrant County, TX | Gas Property | Apr 2025 |
| 582 | RIDGLEA TRIANGLE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 583 | RIDGMAR | Tarrant County, TX | Gas Property | Apr 2025 |
| 584 | RITCHIE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 585 | RIVERCREST | Tarrant County, TX | Gas Property | Apr 2025 |
| 586 | RIVERSIDE 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 587 | RLB 2H | Tarrant County, TX | Gas Property | Apr 2025 |
| 588 | RLB 3H | Tarrant County, TX | Gas Property | Apr 2025 |
| 589 | RLB 4H | Tarrant County, TX | Gas Property | Apr 2025 |
| 590 | RLB 5H | Tarrant County, TX | Gas Property | Apr 2025 |
| 591 | ROBINSON BARNEY | Tarrant County, TX | Gas Property | Apr 2025 |
| 592 | ROCHIN UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 593 | ROCK CREEK | Tarrant County, TX | Gas Property | Apr 2025 |
| 594 | ROCKERFELLOW UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 595 | ROCKING HORSE | Tarrant County, TX | Gas Property | Apr 2025 |
| 596 | ROCKING HORSE WEST WING MIPA | Tarrant County, TX | Gas Property | Apr 2025 |
| 597 | ROCKY CREEK RANCH | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 598 | ROCKY CRK RCH-LONESOME DOVE (SA) | Tarrant County, TX | Oil & Gas Property | Nov 2019 |
| 599 | RODEO GUSHER | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 600 | ROGERS | Tarrant County, TX | Gas Property | Feb 2025 |