| 401 | LEVY LESTER UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 402 | LEWIS | Tarrant County, TX | Gas Property | Apr 2025 |
| 403 | LIBERTY SCHOOL UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 404 | LILLY | Tarrant County, TX | Gas Property | Jan 2025 |
| 405 | LINKS | Tarrant County, TX | Gas Property | Apr 2025 |
| 406 | LITOGRAFIA | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 407 | LITTLE | Tarrant County, TX | Gas Property | Apr 2025 |
| 408 | LITTLE BEAR | Tarrant County, TX | Gas Property | Apr 2025 |
| 409 | LITTLE-PVI MIPA 5H | Tarrant County, TX | Gas Property | Apr 2025 |
| 410 | LMRA MONT DEL B UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 411 | LMRA WEST UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 412 | LONESOME DOVE | Tarrant County, TX | Oil & Gas Property | Nov 2019 |
| 413 | LONESTAR UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 414 | LOOP | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 415 | LORIKEET TRT | Tarrant County, TX | Gas Property | Apr 2025 |
| 416 | LOTTIE BARTON JOHNSON GU | Tarrant County, TX | Gas Property | Apr 2025 |
| 417 | LOUIS | Tarrant County, TX | Gas Property | Oct 2014 |
| 418 | LOWERY UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 419 | LUCK | Tarrant County, TX | Gas Property | Apr 2025 |
| 420 | LUMBERMEN | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 421 | LYNCH | Tarrant County, TX | Gas Property | Apr 2025 |
| 422 | LYNN UNIT | Tarrant County, TX | Oil & Gas Property | Aug 2009 |
| 423 | MADDOX | Tarrant County, TX | Gas Property | Apr 2025 |
| 424 | MADDOX-BADGER | Tarrant County, TX | Gas Property | Apr 2025 |
| 425 | MAHAFFEY UNIT | Tarrant County, TX | Gas Property | Dec 2008 |
| 426 | MAHVASH UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 427 | MALLICK UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 428 | MANNING TRWD | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 429 | MANSFIELD | Tarrant County, TX | Gas Property | Apr 2025 |
| 430 | MANSFIELD PARTNERS | Tarrant County, TX | Gas Property | Apr 2025 |
| 431 | MANSFIELD SPORTS COMPLEX UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 432 | MAPLE TREE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 433 | MAPLE TREE SOUTH UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 434 | MARINE CREEK | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 435 | MARINE CREEK OF TEXAS | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 436 | MARTIN | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 437 | MARTIN-FOREST HILLS | Tarrant County, TX | Gas Property | Apr 2025 |
| 438 | MASTODON | Tarrant County, TX | Gas Property | Apr 2025 |
| 439 | MATHIS COAL CAR | Tarrant County, TX | Gas Property | Apr 2025 |
| 440 | MATLOCK | Tarrant County, TX | Gas Property | Apr 2025 |
| 441 | MAYFAIR | Tarrant County, TX | Gas Property | Jul 2019 |
| 442 | MAYFLOWER | Tarrant County, TX | Gas Property | Apr 2025 |
| 443 | MB A UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 444 | MB B UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 445 | MCCULLAR | Tarrant County, TX | Gas Property | Apr 2025 |
| 446 | MCCULLAR RUDDER BOXER MIPA 2H | Tarrant County, TX | Gas Property | Apr 2025 |
| 447 | MCCULLEY | Tarrant County, TX | Gas Property | Apr 2025 |
| 448 | MCDANIEL | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 449 | MCKINNEY WILLIAM | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 450 | MCMAHON | Tarrant County, TX | Gas Property | Apr 2025 |
| 451 | MEACHAM | Tarrant County, TX | Gas Property | Apr 2025 |
| 452 | MEACHAM NORTH UNIT Q | Tarrant County, TX | Gas Property | Apr 2025 |
| 453 | MEACHAM SOUTH UNIT B | Tarrant County, TX | Gas Property | Apr 2025 |
| 454 | MEEKINS-MAYS | Tarrant County, TX | Gas Property | Apr 2025 |
| 455 | MEGALODON 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 456 | MERCADO | Tarrant County, TX | Gas Property | Apr 2025 |
| 457 | MERCANTILE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 458 | MERCER RANCH | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 459 | MEREKEN | Tarrant County, TX | Gas Property | Apr 2025 |
| 460 | MILNE CARROLL UNIT A | Tarrant County, TX | Gas Property | Apr 2025 |
| 461 | MINERALS W.S | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 462 | MIRA LAGOS | Tarrant County, TX | Gas Property | Apr 2025 |
| 463 | MIRA VISTA UNIT A | Tarrant County, TX | Gas Property | Apr 2025 |
| 464 | MIRA VISTA UNIT C | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 465 | MISSION | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 466 | MITCHELL | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 467 | MITX-CENTEX UNIT 1 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 468 | MOHO | Tarrant County, TX | Gas Property | Apr 2025 |
| 469 | MOORE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 470 | MORITZ | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 471 | MORROW/STEVENS | Tarrant County, TX | Gas Property | Apr 2025 |
| 472 | MORTIMER | Tarrant County, TX | Gas Property | Apr 2025 |
| 473 | MOSS | Tarrant County, TX | Gas Property | Apr 2025 |
| 474 | MOUNT TABOR | Tarrant County, TX | Gas Property | Apr 2025 |
| 475 | MOUNT TABOR BRAYLON MIPA UNIT 3H | Tarrant County, TX | Gas Property | Apr 2025 |
| 476 | MOUSER UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 477 | MS SOUTH | Tarrant County, TX | Gas Property | Apr 2025 |
| 478 | MS WEST | Tarrant County, TX | Gas Property | Apr 2025 |
| 479 | MT ACE UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 480 | MT BIRDIE UNIT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 481 | MT. OLIVET | Tarrant County, TX | Gas Property | Apr 2023 |
| 482 | MULLIGAN | Tarrant County, TX | Gas Property | Mar 2025 |
| 483 | MURRIN BEAR CREEK | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 484 | MUSTANG 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 485 | N SID RICHARDSON | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 486 | NANCE | Tarrant County, TX | Gas Property | Apr 2025 |
| 487 | NANCE SONNY UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 488 | NEILL WAYNE | Tarrant County, TX | Gas Property | Apr 2025 |
| 489 | NEW DAWN UNIT | Tarrant County, TX | Gas Property | Apr 2025 |
| 490 | NEWELL | Tarrant County, TX | Gas Property | Apr 2025 |
| 491 | NORMANDALE | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 492 | NOVIKOFF | Tarrant County, TX | Gas Property | Apr 2025 |
| 493 | NRH 1H | Tarrant County, TX | Gas Property | Apr 2025 |
| 494 | NRH 5H | Tarrant County, TX | Gas Property | Apr 2025 |
| 495 | NUGENT | Tarrant County, TX | Oil & Gas Property | Apr 2025 |
| 496 | NUGENT-BEAR TRT 4H | Tarrant County, TX | Gas Property | Apr 2025 |
| 497 | NUGENT-WHITMAN 5H | Tarrant County, TX | Gas Property | Apr 2025 |
| 498 | NW MERCADO | Tarrant County, TX | Gas Property | Apr 2025 |
| 499 | NW TARRANT PARTNERS | Tarrant County, TX | Gas Property | Apr 2025 |
| 500 | OAK GROVE UNIT | Tarrant County, TX | Gas Property | Apr 2025 |