| Murphree, W.E. "A" G-8-122365 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 1.52K | 50.6K | by Jan 1993 – Aug 2026 |
| Woods, Maudie "A" G-8-100400 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 498 | 86.2K | by Jan 1993 – Aug 2026 |
| Bramlet "A" G-8-102428 | Formation Recovery LLC only | Bbb&c, BLK.3 (Marble Falls) | Comanche | 1 | 248 | 34.3K | by Jan 1993 – Feb 2017 |
| Wright, Bess L. "A" G-8-112354 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 177 | 20.2K | by Jan 1993 – Jan 2009 |
| Lester Unit G-8-100398 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 174 | 85.2K | by Jan 1993 – Aug 2026 |
| Bramlet "A" G-8-102427 | Formation Recovery LLC only | Bbb&c, BLK.3 (Marble Falls) | Comanche | 1 | 173 | 23.5K | by Jan 1993 – Jan 2017 |
| Spence, Robert J. G-8-125400 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 133 | 86.4K | by Jan 1993 – Aug 2026 |
| Lee, Weldon G-8-106000 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 133 | 124K | by Jan 1993 – Aug 2026 |
| Lee, Weldon G-8-105999 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 129 | 124K | by Jan 1993 – Aug 2026 |
| Spence G-8-123246 | Formation Recovery LLC only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 110 | 56.3K | by Jan 1993 – Dec 2016 |
| Murphree,w.e. "A" G-8-112355 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 102 | 82.3K | by Jan 1993 – Aug 2026 |
| Spence, Robert J. G-8-125399 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 85 | 16.3K | by Jan 1993 – Aug 2026 |
| Lester Unit G-8-112352 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 55 | 70.9K | by Jan 1993 – Aug 2026 |
| Bramlet 'A' G-8-173817 | Formation Recovery LLC only | Bbb&c, BLK.3 (Marble Falls) | Comanche | 1 | 38 | 10.8K | Jul 1999 – Jan 2017 |
| Murphree,w.e. "A" G-8-100397 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 6 | 59.3K | by Jan 1993 – Aug 2026 |
| Wright, Bess L. G-8-237123 | Bayou Operating Company, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 2 | 9.23K | Jan 2008 – Aug 2026 |
| Ringhoffer, A. H. G-8-146653 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 54.3K | Jul 1993 – Aug 2026 |
| I.w.robertson Estate G-8-108955 | White Horse Oil Company only | Bbb&c, BLK.3 (Marble Falls) | Comanche | 1 | 0 | 0 | — |
| Spence, A. P. G-8-100406 | Pickett Oil Company only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 2.14K | by Jan 1993 – May 1996 |
| Spence, Robert J. G-8-100405 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 60 | by Jan 1993 – Dec 1997 |
| Rankin, Ray G-8-282691 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 9.25K | Aug 2017 – Aug 2026 |
| Newman, Thomas G-8-100396 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 38.6K | by Jan 1993 – Jul 2026 |
| Rankin, Ray G-8-100410 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 19.5K | by Jan 1993 – Aug 2026 |
| Woods, Maudie G-8-100657 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 0 | — |
| Woods, H.T. G-8-102369 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 12.8K | by Jan 1993 – Aug 2026 |
| Newman, Thomas G-8-100394 | Wilson Well Service Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 26 | Jan 1994 – Jan 1994 |
| Palmore,j.b. G-8-122366 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 140K | by Jan 1993 – Aug 2026 |
| Ringhoffer, A. H. G-8-146654 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 51.2K | Jul 1993 – Aug 2026 |
| Ringhoffer, A. H. G-8-146655 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 22.2K | Jul 1993 – Aug 2026 |
| Rankin, Ray G-8-282693 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 7.84K | Aug 2017 – Aug 2026 |
| Williams, Willie G-8-100401 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 24.2K | by Jan 1993 – Aug 2026 |
| Williams, Willie G-8-100403 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 69.4K | by Jan 1993 – Aug 2026 |
| Barr, C.A. G-8-88494 | KLH Oil & Gas, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 0 | — |
| Williams, Willie G-8-100402 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 52.7K | by Jan 1993 – Aug 2026 |
| West "A" G-8-81676 | Bryco Gas Co. only | Bbb&c, BLK.3 (Marble Falls) | Comanche | 1 | 0 | 0 | — |
| Rankin, Ray G-8-100411 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 101K | by Jan 1993 – Aug 2026 |
| Robertson Heirs G-8-84819 | Sequoia Energy Resources only | Bbb&c, BLK.3 (Marble Falls) | Comanche | 1 | 0 | 9.28K | by Jan 1993 – Sep 1998 |
| Ringhoffer, A. H. G-8-146645 | Southwest Gas Systems, Inc. only | Bbb&c, BLK.3 (Marble Falls) | Brown | 1 | 0 | 93K | Jul 1993 – Aug 2026 |