| Central Van Woodbine Unit O-5-2453 | Basa Resources, Inc. only | Van (Central-Woodbine) | Van Zandt | 192 | 7.25M | 4.64M | Jan 1993 – Apr 2026 |
| Blake, R. S. O-5-1111 | Basa Resources, Inc. only | Van | Van Zandt | 19 | 1.48M | 797K | Jan 1993 – Apr 2026 |
| Svruc Unit O-5-3673 | Basa Resources, Inc. only | Van (Rodessa) | Van Zandt | 18 | 1.39M | 1.49M | Oct 1999 – Apr 2026 |
| Van,sw Lewisville Unit O-5-1943 | Basa Resources, Inc. only | Van,s.w. (Lewisville) | Van Zandt | 68 | 1.06M | 129K | Jan 1993 – Apr 2026 |
| Swain, O. L. 11 O-5-2088 | Basa Resources, Inc. only | Van | Van Zandt | 11 | 900K | 623K | Jan 1993 – Apr 2026 |
| Bracken, J. A. 503 O-5-1140 | Basa Resources, Inc. only | Van | Van Zandt | 10 | 853K | 503K | Jan 1993 – Apr 2026 |
| Swain, D. L. 11 -AC- O-5-2087 | Basa Resources, Inc. only | Van | Van Zandt | 7 | 850K | 438K | Jan 1993 – Apr 2026 |
| York, W. A. 13 O-5-1214 | Basa Resources, Inc. only | Van | Van Zandt | 11 | 731K | 389K | Jan 1993 – Apr 2026 |
| Bracken, J. A. 35 O-5-1139 | Basa Resources, Inc. only | Van | Van Zandt | 13 | 725K | 323K | Jan 1993 – Apr 2026 |
| Thompson, I. W. 401 O-5-3187 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 16 | 502K | 1.41M | Jan 1993 – Apr 2026 |
| Bracken, J. A. 503 O-5-2936 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 13 | 494K | 1.25M | Jan 1993 – Apr 2026 |
| York, W. A. 13 O-5-3169 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 11 | 477K | 1.04M | Jan 1993 – Apr 2026 |
| Shivers, J. R. 12 O-5-1188 | Basa Resources, Inc. only | Van | Van Zandt | 12 | 441K | 364K | Jan 1993 – Apr 2026 |
| Brawner, L. M. 10 O-5-3580 | Basa Resources, Inc. only | Van (Upper Carlile) | Van Zandt | 6 | 361K | 344K | Jun 1997 – Apr 2026 |
| Thompson, I. W. 401 O-5-1197 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 354K | 207K | Jan 1993 – Apr 2026 |
| Fowler, E. L. 302 O-5-3215 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 15 | 351K | 816K | Jan 1993 – Apr 2011 |
| Tunnell, I. P. 300 O-5-3199 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 11 | 335K | 821K | Jan 1993 – Sep 2011 |
| Jarman, W. T. 37 O-5-3189 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 10 | 316K | 612K | Jan 1993 – Apr 2026 |
| Fruitvale Waterflood Unit O-5-4291 | Jamex, Inc. only | Fruitvale | Van Zandt | 13 | 315K | 0 | Feb 2017 – Apr 2026 |
| Brawner, L. M. 10 O-5-3579 | Basa Resources, Inc. only | Van (James) | Van Zandt | 4 | 315K | 194K | Aug 1997 – Apr 2026 |
| Smith, F. B. 104 O-5-1134 | Basa Resources, Inc. only | Van | Van Zandt | 14 | 299K | 71.5K | Jan 1993 – Apr 2026 |
| Bracken, J. A. 35 O-5-3167 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 13 | 272K | 600K | Jan 1993 – Apr 2026 |
| Swain, W. F. 36 O-5-3168 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 7 | 256K | 671K | Jan 1993 – Apr 2026 |
| Howell, D. R. 45 O-5-3190 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 12 | 253K | 576K | Jan 1993 – Apr 2026 |
| Brawner, L. M. 10 O-5-1141 | Basa Resources, Inc. only | Van | Van Zandt | 11 | 236K | 82.4K | Jan 1993 – Apr 2026 |
| White, W. H. 504 O-5-3205 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 6 | 233K | 332K | Jan 1993 – Apr 2026 |
| J. R. Oliver Unit O-5-3653 | Hughes Oil Operating, LLC only | Van (Carlisle) | Van Zandt | 2 | 227K | 151K | Jan 1998 – Jan 2025 |
| McPhearson, J. F. O-5-3587 | Hughes Oil Operating, LLC only | Van (Carlisle) | Van Zandt | 3 | 224K | 280K | Aug 1997 – Apr 2026 |
| Thompson 49 O-5-3256 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 9 | 222K | 432K | Jan 1993 – Sep 2017 |
| Oliver, J. R. O-5-3557 | Hughes Oil Operating, LLC only | Van (Upper Carlile) | Van Zandt | 2 | 222K | 251K | Jun 1997 – Apr 2026 |
| Murphree, J. J. 31 O-5-1182 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 202K | 82.3K | Jan 1993 – Apr 2026 |
| Swain, O. L. 109 O-5-1135 | Basa Resources, Inc. only | Van | Van Zandt | 7 | 198K | 71.4K | Jan 1993 – Apr 2026 |
| Oliver, J. R. O-5-3541 | Crawford Hughes Operating Co. only | Van (Carlisle) | Van Zandt | 2 | 197K | 79.1K | Apr 1997 – Feb 2003 |
| Brawner, L.M. 10 O-5-3575 | Basa Resources, Inc. only | Van (Rodessa) | Van Zandt | 4 | 192K | 363K | Jul 1997 – Apr 2026 |
| McPhearson, J. F. "A" O-5-3641 | Hughes Oil Operating, LLC only | Van (Upper Carlile) | Van Zandt | 2 | 191K | 214K | Feb 1998 – Feb 2026 |
| Jarman, W. T. 37 O-5-1172 | Basa Resources, Inc. only | Van | Van Zandt | 4 | 183K | 62.5K | Jan 1993 – Apr 2026 |
| Brawner, L. M. 10 O-5-3578 | Basa Resources, Inc. only | Van (Carlisle) | Van Zandt | 5 | 181K | 324K | Aug 1997 – Jan 2010 |
| York, Ella 102 O-5-1136 | Union Oil Company of California only | Van | Van Zandt | 12 | 179K | 76.7K | Jan 1993 – May 2014 |
| South Van, Lewisville,w. F. Unit O-5-1734 | Basa Resources, Inc. only | Van | Van Zandt | 57 | 174K | 19.7K | Jan 1993 – Apr 2026 |
| Smith, L. A. 103 O-5-1133 | Basa Resources, Inc. only | Van | Van Zandt | 7 | 173K | 64K | Jan 1993 – Apr 2026 |
| Swain, O. L. 11B O-5-3274 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 7 | 172K | 349K | Jan 1993 – Apr 2026 |
| J. R. Oliver Unit O-5-3590 | Hughes Oil Operating, LLC only | Van (James) | Van Zandt | 1 | 169K | 150K | Dec 1997 – Apr 2026 |
| Peters, R. H. 29 O-5-1185 | Basa Resources, Inc. only | Van | Van Zandt | 5 | 161K | 26.5K | Jan 1993 – Apr 2026 |
| Cumbie, J. E. 32 O-5-1159 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 161K | 76.4K | Jan 1993 – Apr 2026 |
| Taylor, T. J. 33 O-5-1195 | Basa Resources, Inc. only | Van | Van Zandt | 4 | 153K | 86.4K | Jan 1993 – Apr 2026 |
| Smith 103 O-5-3247 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 8 | 153K | 327K | Jan 1993 – Apr 2026 |
| Shivers, J. R. 12 O-5-3244 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 4 | 150K | 420K | Jan 1993 – Apr 2026 |
| Leonard, J. M. 30 O-5-1173 | Basa Resources, Inc. only | Van | Van Zandt | 4 | 149K | 42.9K | Jan 1993 – Apr 2026 |
| Oliver, J. R. 207 O-5-3699 | Basa Resources, Inc. only | Van | Van Zandt | 1 | 148K | 18.9K | Aug 2000 – Apr 2026 |
| Groves, C. A. O-5-811 | Jamex, Inc. only | Fruitvale | Van Zandt | 1 | 147K | 21 | Jan 1993 – Dec 2016 |