| 501 | RUDD GAS UNIT | Harrison County, TX | Oil & Gas Property | Mar 2020 |
| 502 | RUDD UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 503 | RUDD W.L | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 504 | RUDD W.L. GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 505 | RUNNELS MACK V | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 506 | RUPPE JAMES A. ETAL | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 507 | RUPPE TRUST GU 1 | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 508 | RUPPE TRUST-SUTTON HV UNIT A 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 509 | RUPPE-BOSCH | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 510 | RUPPE/FENNELL/NEWMAN | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 511 | RUTLAND | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 512 | SANDERS | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 513 | SANDERS A HV UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 514 | SANDERS A HV UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 515 | SANDERS GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 516 | SANDERS HV UNIT C 3H | Harrison County, TX | Gas Property | Jan 2026 |
| 517 | SANDERS NORTH HV UNIT | Harrison County, TX | Gas Property | Jan 2026 |
| 518 | SANDERS SB 1H | Harrison County, TX | Gas Property | Jan 2026 |
| 519 | SANDERS-MOORE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 520 | SANDY HV UNIT | Harrison County, TX | Gas Property | Jan 2026 |
| 521 | SCOTT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 522 | SCOTT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 523 | SCOTT BUCK | Harrison County, TX | Oil & Gas Property | Mar 2016 |
| 524 | SEALEY HEIRS | Harrison County, TX | Oil & Gas Property | Dec 2025 |
| 525 | SHAW | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 526 | SHAW UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 527 | SHELBURN | Harrison County, TX | Oil & Gas Property | Nov 2025 |
| 528 | SHEPPARD-ANNE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 529 | SHOULTS 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 530 | SIMS ROLLIE | Harrison County, TX | Oil & Gas Property | Dec 2025 |
| 531 | SLACK | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 532 | SLAUGHTER GAS UNIT B | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 533 | SLONE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 534 | SMITH | Harrison County, TX | Oil Property | Jan 2026 |
| 535 | SMITH T.P | Harrison County, TX | Oil & Gas Property | Nov 2025 |
| 536 | SMITH-LINDSEY | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 537 | SMITHERMAN #1 GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 538 | SNIDER ALICE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 539 | SOUTH UNIT | Harrison County, TX | Oil & Gas Property | Jul 1996 |
| 540 | SOUTHWESTERN MEDICAL FOUNDATION | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 541 | SPEARS | Harrison County, TX | Oil & Gas Property | Apr 2025 |
| 542 | SPEIGHTS | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 543 | SPENCER | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 544 | ST. JAMES GAS UNIT 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 545 | STACY GAS UNIT NO | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 546 | STEEG | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 547 | STEELE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 548 | STEELE GAS UNIT NO. 1 | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 549 | STEPHENS | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 550 | STEPHENSON | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 551 | STEWART JENNIFER | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 552 | STONE PEARL | Harrison County, TX | Oil & Gas Property | Nov 2025 |
| 553 | STRANGE | Harrison County, TX | Oil & Gas Property | Dec 2025 |
| 554 | STRATOCASTER | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 555 | STRICKLAND-LEF | Harrison County, TX | Oil & Gas Property | Nov 2025 |
| 556 | STRONG-LOWRY ( | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 557 | STROUD HV UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 558 | STURGES GU | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 559 | STW (ALLOC) 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 560 | SUGGS MARGARET | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 561 | SUMMERS GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 562 | SUTTON | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 563 | SWEPCO GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 564 | SWIFT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 565 | T-C-EB (AW) 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 566 | T.P. SMITH HV UNIT | Harrison County, TX | Gas Property | Jan 2026 |
| 567 | TALLY-DEGA | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 568 | TALLY-DEGA-DELCIA | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 569 | TAYLOR | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 570 | TAYLOR | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 571 | TAYLOR ELLIS HEIRS | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 572 | TAYLOR ESTATE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 573 | TAYLOR W.B | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 574 | TAYLOR-ABNEY-OBANION(ALLOC | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 575 | TAYLOR-COLLIER (AW) 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 576 | TECARO WOOD | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 577 | TEXAS STATE UNIT | Harrison County, TX | Oil & Gas Property | Apr 1994 |
| 578 | THANOS BOSH HB 1H | Harrison County, TX | Gas Property | Jan 2026 |
| 579 | THANOS TA | Harrison County, TX | Gas Property | Jan 2026 |
| 580 | THELMA MOSLEY GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 581 | THOMPSON | Harrison County, TX | Oil & Gas Property | Nov 2025 |
| 582 | THOMPSON GAS UNIT -B | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 583 | THOMPSON J. PHIL | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 584 | TIMBERLAKE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 585 | TIMMINS | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 586 | TIMMINS FURRH | Harrison County, TX | Oil & Gas Property | Nov 2023 |
| 587 | TIMMINS GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 588 | TJT 1 | Harrison County, TX | Oil & Gas Property | Oct 2025 |
| 589 | TJT MINERALS | Harrison County, TX | Oil & Gas Property | Feb 2025 |
| 590 | TJT MINERALS LTD GAS UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 591 | TJT UNIT | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 592 | TRAMMELL | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 593 | TSRHCC | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 594 | TUCKER | Harrison County, TX | Oil & Gas Property | Nov 2025 |
| 595 | TUCKER | Harrison County, TX | Oil & Gas Property | Oct 2025 |
| 596 | TURNER | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 597 | TURNER, JOHN EST. -A | Harrison County, TX | Oil & Gas Property | Nov 1994 |
| 598 | TUTLE | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 599 | TUTT W. R | Harrison County, TX | Oil & Gas Property | Jan 2026 |
| 600 | TUTT-GREER (ALLOC) 1H | Harrison County, TX | Oil & Gas Property | Jan 2026 |