| 401 | LOTTIE BARTON JOHNSON GU | Tarrant County, TX | Gas Property | Mar 2026 |
| 402 | LOUIS | Tarrant County, TX | Gas Property | Oct 2014 |
| 403 | LOWERY UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 404 | LUCK | Tarrant County, TX | Gas Property | Mar 2026 |
| 405 | LUMBERMEN | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 406 | LYNCH | Tarrant County, TX | Gas Property | Mar 2026 |
| 407 | LYNN UNIT | Tarrant County, TX | Oil & Gas Property | Aug 2009 |
| 408 | MADDOX | Tarrant County, TX | Gas Property | Mar 2026 |
| 409 | MADDOX-BADGER | Tarrant County, TX | Gas Property | Mar 2026 |
| 410 | MAHAFFEY UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 411 | MAHVASH UNIT | Tarrant County, TX | Oil & Gas Property | Feb 2026 |
| 412 | MALLICK UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 413 | MANNING TRWD | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 414 | MANSFIELD | Tarrant County, TX | Gas Property | Mar 2026 |
| 415 | MANSFIELD PARTNERS | Tarrant County, TX | Gas Property | Mar 2026 |
| 416 | MANSFIELD SPORTS COMPLEX UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 417 | MAPLE TREE | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 418 | MAPLE TREE SOUTH UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 419 | MARINE CREEK | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 420 | MARINE CREEK OF TEXAS | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 421 | MARTIN | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 422 | MARTIN-FOREST HILLS | Tarrant County, TX | Gas Property | Mar 2026 |
| 423 | MASTODON | Tarrant County, TX | Gas Property | Mar 2026 |
| 424 | MATHIS COAL CAR | Tarrant County, TX | Gas Property | Mar 2026 |
| 425 | MATLOCK | Tarrant County, TX | Gas Property | Mar 2026 |
| 426 | MAYFLOWER | Tarrant County, TX | Gas Property | Mar 2026 |
| 427 | MB A UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 428 | MB B UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 429 | MCCULLAR | Tarrant County, TX | Gas Property | Mar 2026 |
| 430 | MCCULLAR RUDDER BOXER MIPA 2H | Tarrant County, TX | Gas Property | Mar 2026 |
| 431 | MCCULLEY | Tarrant County, TX | Gas Property | Jun 2025 |
| 432 | MCDANIEL | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 433 | MCDONALD HASLET UNIT 2H | Tarrant County, TX | Gas Property | Mar 2026 |
| 434 | MCKINNEY WILLIAM | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 435 | MCMAHON | Tarrant County, TX | Gas Property | Mar 2026 |
| 436 | MEACHAM | Tarrant County, TX | Gas Property | Mar 2026 |
| 437 | MEACHAM NORTH UNIT Q | Tarrant County, TX | Gas Property | Mar 2026 |
| 438 | MEACHAM SOUTH UNIT B | Tarrant County, TX | Gas Property | Mar 2026 |
| 439 | MEEKINS-MAYS | Tarrant County, TX | Gas Property | Mar 2026 |
| 440 | MEGALODON 1H | Tarrant County, TX | Gas Property | Mar 2026 |
| 441 | MERCADO | Tarrant County, TX | Gas Property | Mar 2026 |
| 442 | MERCANTILE | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 443 | MERCER RANCH | Tarrant County, TX | Oil & Gas Property | Feb 2026 |
| 444 | MEREKEN | Tarrant County, TX | Gas Property | Mar 2026 |
| 445 | MILNE CARROLL UNIT A | Tarrant County, TX | Gas Property | Mar 2026 |
| 446 | MINERALS W.S | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 447 | MIRA LAGOS | Tarrant County, TX | Gas Property | Mar 2026 |
| 448 | MIRA VISTA UNIT A | Tarrant County, TX | Gas Property | Mar 2026 |
| 449 | MIRA VISTA UNIT C | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 450 | MISSION | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 451 | MITCHELL | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 452 | MOHO | Tarrant County, TX | Gas Property | Mar 2026 |
| 453 | MOORE | Tarrant County, TX | Oil & Gas Property | Feb 2026 |
| 454 | MORITZ | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 455 | MORROW STEVENS | Tarrant County, TX | Gas Property | Mar 2026 |
| 456 | MORTIMER | Tarrant County, TX | Gas Property | Mar 2026 |
| 457 | MOSS | Tarrant County, TX | Gas Property | Mar 2026 |
| 458 | MOUNT TABOR | Tarrant County, TX | Gas Property | Mar 2026 |
| 459 | MOUNT TABOR BRAYLON MIPA UNIT 3H | Tarrant County, TX | Gas Property | Mar 2026 |
| 460 | MOUSER UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 461 | MT ACE UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 462 | MT BIRDIE UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 463 | MT. OLIVET | Tarrant County, TX | Gas Property | Apr 2023 |
| 464 | MULLIGAN | Tarrant County, TX | Gas Property | Mar 2026 |
| 465 | MURRIN BEAR CREEK | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 466 | MUSTANG 1H | Tarrant County, TX | Gas Property | Mar 2026 |
| 467 | N SID RICHARDSON | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 468 | NANCE | Tarrant County, TX | Gas Property | Mar 2026 |
| 469 | NANCE SONNY UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 470 | NEILL WAYNE | Tarrant County, TX | Gas Property | Mar 2026 |
| 471 | NEW DAWN UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 472 | NEWELL | Tarrant County, TX | Gas Property | May 2025 |
| 473 | NORMANDALE | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 474 | NOVIKOFF | Tarrant County, TX | Gas Property | Mar 2026 |
| 475 | NRH 5H | Tarrant County, TX | Gas Property | Mar 2026 |
| 476 | NUGENT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 477 | NUGENT-BEAR TRT 4H | Tarrant County, TX | Gas Property | Mar 2026 |
| 478 | NUGENT-WHITMAN 5H | Tarrant County, TX | Gas Property | Mar 2026 |
| 479 | NW MERCADO | Tarrant County, TX | Gas Property | May 2025 |
| 480 | NW TARRANT PARTNERS | Tarrant County, TX | Gas Property | Mar 2026 |
| 481 | OAK GROVE UNIT | Tarrant County, TX | Gas Property | Mar 2026 |
| 482 | OAKWOOD | Tarrant County, TX | Gas Property | Mar 2026 |
| 483 | OK CORRAL | Tarrant County, TX | Gas Property | Mar 2026 |
| 484 | OLCOTT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 485 | OLCOTT NORTH A UNIT | Tarrant County, TX | Oil & Gas Property | Feb 2026 |
| 486 | OLD WEATHERFORD | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 487 | OLE GIESER UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 488 | OLIVER | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 489 | OSLER | Tarrant County, TX | Gas Property | Mar 2026 |
| 490 | OSPREY | Tarrant County, TX | Gas Property | Mar 2026 |
| 491 | PACIFIC UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 492 | PAGE STREET | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 493 | PALOS VERDES | Tarrant County, TX | Gas Property | Mar 2026 |
| 494 | PANAGOPOULOS UNIT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 495 | PANTEGO | Tarrant County, TX | Gas Property | Feb 2026 |
| 496 | PANTHER HEIGHTS | Tarrant County, TX | Gas Property | Feb 2026 |
| 497 | PAPPAJOHN | Tarrant County, TX | Gas Property | Mar 2026 |
| 498 | PAR 1H | Tarrant County, TX | Gas Property | Mar 2026 |
| 499 | PARROT | Tarrant County, TX | Oil & Gas Property | Mar 2026 |
| 500 | PARROT RIVERBEND UNIT E | Tarrant County, TX | Gas Property | Mar 2026 |