| Thompson, I. W. 401 O-5-3187 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 16 | 503K | 1.41M | by Jan 1993 – Aug 2026 |
| Bracken, J. A. 503 O-5-2936 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 13 | 494K | 1.25M | by Jan 1993 – Aug 2026 |
| York, W. A. 13 O-5-3169 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 11 | 477K | 1.04M | by Jan 1993 – Aug 2026 |
| Fowler, E. L. 302 O-5-3215 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 15 | 351K | 816K | by 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 | by Jan 1993 – Sep 2011 |
| Jarman, W. T. 37 O-5-3189 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 10 | 316K | 612K | by Jan 1993 – Jul 2026 |
| Bracken, J. A. 35 O-5-3167 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 13 | 274K | 601K | by Jan 1993 – Aug 2026 |
| Swain, W. F. 36 O-5-3168 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 7 | 258K | 677K | by Jan 1993 – Aug 2026 |
| Howell, D. R. 45 O-5-3190 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 12 | 253K | 576K | by Jan 1993 – Aug 2026 |
| White, W. H. 504 O-5-3205 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 6 | 236K | 334K | by Jan 1993 – Aug 2026 |
| Thompson 49 O-5-3256 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 9 | 222K | 432K | by Jan 1993 – Sep 2017 |
| Swain, O. L. 11B O-5-3274 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 7 | 174K | 349K | by Jan 1993 – Aug 2026 |
| Smith 103 O-5-3247 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 8 | 153K | 328K | by Jan 1993 – Aug 2026 |
| Shivers, J. R. 12 O-5-3244 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 4 | 151K | 420K | by Jan 1993 – Aug 2026 |
| Cumbie 32 O-5-3232 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 5 | 142K | 303K | by Jan 1993 – Jun 2009 |
| Murphree 31 O-5-3235 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 4 | 140K | 252K | by Jan 1993 – Aug 2026 |
| Taylor, J. T. 33 O-5-3257 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 8 | 126K | 231K | by Jan 1993 – Aug 2026 |
| Tunnell, A. R. 59 O-5-3217 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 8 | 125K | 281K | by Jan 1993 – Nov 2009 |
| Wells 47 O-5-3223 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 10 | 118K | 315K | by Jan 1993 – Mar 2013 |
| York, Ella -102- O-5-3270 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 9 | 110K | 201K | by Jan 1993 – Oct 2013 |
| White, W. H. 501 O-5-2961 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 3 | 70.8K | 324K | by Jan 1993 – Dec 2010 |
| Blake, R.S. O-5-3255 | Wagner Oil Company only | Van (Austin Chalk) | Van Zandt | 11 | 53.1K | 89.5K | by Jan 1993 – Nov 1998 |
| Swain, O. L. 11 O-5-1891 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 2 | 47K | 67.2K | by Jan 1993 – Jun 2015 |
| White 502 O-5-3246 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 2 | 42.8K | 112K | by Jan 1993 – Jan 2004 |
| Taylor, T. J. O-5-3242 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 4 | 35.5K | 67K | by Jan 1993 – Aug 2026 |
| Gilbert, H. C. 43 O-5-3275 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 7 | 34.3K | 138K | by Jan 1993 – Jul 2008 |
| Fowler, B. M. 303 O-5-3216 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 2 | 33.4K | 65.8K | by Jan 1993 – Nov 2009 |
| Leonard, J. H. 30 O-5-1885 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 2 | 32.3K | 102K | by Jan 1993 – Jan 2013 |
| Howell, R. A. 44 O-5-3294 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 4 | 31.4K | 152K | by Jan 1993 – Mar 2010 |
| Miller, I. D. 34 O-5-2954 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 4 | 29.9K | 33.6K | by Jan 1993 – Aug 2026 |
| Cook 42 O-5-3245 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 4 | 25.3K | 54.5K | by Jan 1993 – May 2008 |
| Brawner -10- O-5-3271 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 3 | 24.3K | 92.2K | by Jan 1993 – Sep 2013 |
| Camper, B. W. 110 O-5-3327 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 24.1K | 12.2K | by Jan 1993 – Dec 2007 |
| Peters, R. H. 29 O-5-3276 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 3 | 22.6K | 34.4K | by Jan 1993 – Oct 2009 |
| Swain, W. F. 14 O-5-1869 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 1 | 21.6K | 21.8K | by Jan 1993 – Aug 2026 |
| Maxfield 38 O-5-3243 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 3 | 21.2K | 26.4K | by Jan 1993 – Aug 2026 |
| Crim, R. C. 28 O-5-3311 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 2 | 18.3K | 35.3K | May 1993 – Jun 2009 |
| Swain, W. F. 9 O-5-1879 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 4 | 17.7K | 143K | by Jan 1993 – Aug 2026 |
| Smith 104 O-5-3248 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 2 | 16.9K | 10.9K | by Jan 1993 – Nov 2012 |
| Sanger O-5-3440 | Chanze Oil Co., Inc. only | Van (Austin Chalk) | Van Zandt | 1 | 16.6K | 1.41K | by Jan 1993 – Aug 2026 |
| Morris, W. E. 601 O-5-3554 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 14.1K | 15.5K | Feb 1997 – Jul 2014 |
| Stewart, J. C. 48 O-5-3206 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 11.7K | 13K | Apr 1993 – Feb 2009 |
| Hartt 128 O-5-3522 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 10.1K | 7.07K | Nov 1995 – Nov 2010 |
| Bolin, M. R. 51 O-5-3527 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 9.63K | 15.3K | Jul 1996 – Jan 2009 |
| Wallace, T. J. 402 O-5-3359 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 7.14K | 7.82K | by Jan 1993 – May 2010 |
| Steward, G. W. 68 O-5-3771 | Basa Resources, Inc. only | Van (Austin Chalk) | Van Zandt | 1 | 5.34K | 3.47K | Jan 2004 – Aug 2026 |
| Smith, L. R. O-5-3559 | Chanze Oil Co., Inc. only | Van (Austin Chalk) | Van Zandt | 1 | 5.17K | 0 | Jul 1997 – Aug 2026 |
| Dowdle, L. A. 205 O-5-3299 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 3.2K | 3.98K | by Jan 1993 – Apr 2009 |
| Consolidation 79 O-5-3553 | Union Oil Company of California only | Van (Austin Chalk) | Van Zandt | 1 | 2.76K | 13.2K | Mar 1997 – Jan 2009 |
| Blake, R.S. O-5-3763 | Cameron, Paul E., Jr., Inc. only | Van (Austin Chalk) | Van Zandt | 2 | 909 | 854 | Feb 2004 – Sep 2004 |