| Blake, R. S. O-5-1111 | Basa Resources, Inc. only | Van | Van Zandt | 21 | 1.5M | 804K | by Jan 1993 – Aug 2026 |
| Swain, O. L. 11 O-5-2088 | Basa Resources, Inc. only | Van | Van Zandt | 11 | 907K | 626K | by Jan 1993 – Aug 2026 |
| Bracken, J. A. 503 O-5-1140 | Basa Resources, Inc. only | Van | Van Zandt | 10 | 860K | 506K | by Jan 1993 – Aug 2026 |
| Swain, D. L. 11 -AC- O-5-2087 | Basa Resources, Inc. only | Van | Van Zandt | 7 | 856K | 440K | by Jan 1993 – Aug 2026 |
| York, W. A. 13 O-5-1214 | Basa Resources, Inc. only | Van | Van Zandt | 11 | 734K | 389K | by Jan 1993 – Aug 2026 |
| Bracken, J. A. 35 O-5-1139 | Basa Resources, Inc. only | Van | Van Zandt | 13 | 731K | 323K | by Jan 1993 – Aug 2026 |
| Shivers, J. R. 12 O-5-1188 | Basa Resources, Inc. only | Van | Van Zandt | 12 | 444K | 366K | by Jan 1993 – Aug 2026 |
| Thompson, I. W. 401 O-5-1197 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 358K | 208K | by Jan 1993 – Aug 2026 |
| Smith, F. B. 104 O-5-1134 | Basa Resources, Inc. only | Van | Van Zandt | 14 | 301K | 71.7K | by Jan 1993 – Aug 2026 |
| Brawner, L. M. 10 O-5-1141 | Basa Resources, Inc. only | Van | Van Zandt | 11 | 239K | 84.4K | by Jan 1993 – Aug 2026 |
| Murphree, J. J. 31 O-5-1182 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 204K | 82.4K | by Jan 1993 – Aug 2026 |
| Swain, O. L. 109 O-5-1135 | Basa Resources, Inc. only | Van | Van Zandt | 7 | 200K | 72K | by Jan 1993 – Aug 2026 |
| Jarman, W. T. 37 O-5-1172 | Basa Resources, Inc. only | Van | Van Zandt | 4 | 183K | 62.8K | by Jan 1993 – Aug 2026 |
| York, Ella 102 O-5-1136 | Union Oil Company of California only | Van | Van Zandt | 12 | 179K | 76.7K | by Jan 1993 – May 2014 |
| South Van, Lewisville,w. F. Unit O-5-1734 | Basa Resources, Inc. only | Van | Van Zandt | 57 | 176K | 19.8K | by Jan 1993 – Aug 2026 |
| Smith, L. A. 103 O-5-1133 | Basa Resources, Inc. only | Van | Van Zandt | 7 | 175K | 64.7K | by Jan 1993 – Aug 2026 |
| Peters, R. H. 29 O-5-1185 | Basa Resources, Inc. only | Van | Van Zandt | 5 | 162K | 26.7K | by Jan 1993 – Aug 2026 |
| Cumbie, J. E. 32 O-5-1159 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 161K | 76.5K | by Jan 1993 – Aug 2026 |
| Taylor, T. J. 33 O-5-1195 | Basa Resources, Inc. only | Van | Van Zandt | 4 | 153K | 86.5K | by Jan 1993 – Aug 2026 |
| Fowler, A. J. O-5-1113 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 151K | 25.7K | by Jan 1993 – Aug 2026 |
| Leonard, J. M. 30 O-5-1173 | Basa Resources, Inc. only | Van | Van Zandt | 4 | 150K | 43.3K | by Jan 1993 – Aug 2026 |
| Oliver, J. R. 207 O-5-3699 | Basa Resources, Inc. only | Van | Van Zandt | 1 | 149K | 19K | Aug 2000 – Aug 2026 |
| Miller, I. D. 34 O-5-1179 | Basa Resources, Inc. only | Van | Van Zandt | 8 | 124K | 54.1K | by Jan 1993 – Aug 2026 |
| Carroll, E. E. O-5-1112 | Wagner Oil Company only | Van | Van Zandt | 5 | 109K | 27.3K | by Jan 1993 – Mar 2009 |
| White, W. H. 504 O-5-1213 | Basa Resources, Inc. only | Van | Van Zandt | 2 | 86.7K | 90.6K | Feb 1993 – Aug 2026 |
| Magers, A. F. 18 O-5-1174 | Union Oil Company of California only | Van | Van Zandt | 5 | 76.3K | 19.7K | by Jan 1993 – May 2019 |
| White, R. V. 502 O-5-1212 | Union Oil Company of California only | Van | Van Zandt | 4 | 71.6K | 110K | by Jan 1993 – Jan 2008 |
| Swain, W. F. 36 O-5-1194 | Basa Resources, Inc. only | Van | Van Zandt | 3 | 60.2K | 30.3K | by Jan 1993 – Oct 2010 |
| Shirley, M. F. 107 O-5-1132 | Basa Resources, Inc. only | Van | Van Zandt | 8 | 58.6K | 13.7K | by Jan 1993 – Aug 2026 |
| Crim, J. F. 16 O-5-1157 | Basa Resources, Inc. only | Van | Van Zandt | 5 | 46.4K | 25.4K | Apr 2002 – Aug 2026 |
| Smith, L. R. O-5-2204 | Chanze Oil Co., Inc. only | Van | Van Zandt | 3 | 35.1K | 51 | by Jan 1993 – Aug 2026 |
| Crim, B. E. 15 O-5-3742 | Basa Resources, Inc. only | Van | Van Zandt | 1 | 33.4K | 17K | Sep 2002 – Aug 2026 |
| Taylor-TJ O-5-1215 | Basa Resources, Inc. only | Van | Van Zandt | 6 | 31.8K | 20.5K | by Jan 1993 – Aug 2026 |
| Freeman, L. V. 208 O-5-1167 | Union Oil Company of California only | Van | Van Zandt | 5 | 29.6K | 7.31K | by Jan 1993 – Oct 2013 |
| Swain, W. F. 9 O-5-1191 | Basa Resources, Inc. only | Van | Van Zandt | 8 | 27.1K | 13K | by Jan 1993 – Aug 2026 |
| Davis Heirs O-5-2549 | Chanze Oil Co., Inc. only | Van | Van Zandt | 4 | 27K | 51 | by Jan 1993 – Aug 2026 |
| Heirs,davis -B- O-5-2180 | Chanze Oil Co., Inc. only | Van | Van Zandt | 3 | 18.9K | 51 | by Jan 1993 – Aug 2026 |
| Southeast Van Lewisville Unit O-5-2619 | Union Oil Company of California only | Van | Van Zandt | 8 | 14.5K | 8.68K | by Jan 1993 – Oct 2010 |
| Culver-Davis Heirs -B- Oil Unit O-5-2196 | Chanze Oil Co., Inc. only | Van | Van Zandt | 1 | 14.5K | 51 | by Jan 1993 – Feb 2020 |
| Wallace, T. J. 402 O-5-1206 | Union Oil Company of California only | Van | Van Zandt | 5 | 7.27K | 2.28K | by Jan 1993 – Dec 1998 |
| Carter, Geo. W. O-5-1110 | Energy 2000, Inc. only | Van | Van Zandt | 2 | 6.77K | 21 | by Jan 1993 – Nov 2000 |
| Morris, W. E. 62 O-5-1180 | Union Oil Company of California only | Van | Van Zandt | 3 | 6.12K | 5.89K | by Jan 1993 – Nov 2008 |
| Freeman, J. A. O-5-2444 | Rowan, Al only | Van | Van Zandt | 2 | 5.02K | 50 | by Jan 1993 – Jan 1999 |
| York, C. L. "A" O-5-3855 | Chanze Oil Co., Inc. only | Van | Van Zandt | 1 | 3.99K | 1.14K | Nov 2007 – Mar 2020 |
| Ellison, A. W. O-5-2413 | Rowan, Al only | Van | Van Zandt | 2 | 3.37K | 51 | by Jan 1993 – Jan 1999 |
| Freeman, J. H. O-5-2473 | Rowan, Al only | Van | Van Zandt | 1 | 2.68K | 51 | by Jan 1993 – Jan 1999 |
| Church Lot 108 O-5-1121 | Union Oil Company of California only | Van | Van Zandt | 1 | 2.62K | 2.14K | by Jan 1993 – Feb 2008 |
| Blackstock, Frank 106 O-5-3374 | Union Oil Company of California only | Van | Van Zandt | 8 | 1.74K | 114 | by Jan 1993 – Jan 1995 |
| Brinson, Betty Clark O-5-2827 | Rowan, Al only | Van | Van Zandt | 1 | 1.62K | 51 | by Jan 1993 – Feb 1999 |
| White, C. 61 O-5-1209 | Union Oil Company of California only | Van | Van Zandt | 6 | 1.03K | 853 | Oct 2007 – Jan 2011 |