| Sauz Ranch Mulatos Pasture #20242-489-30878 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 6700) | PluggedOil | 9,070 | Feb 15, 2013 | 3 | May 2017 |
| Sauz Ranch Mulatos Pasture #20742-489-30876 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 6700) | PluggedOil | 9,060 | Feb 13, 2013 | 4 | May 2017 |
| Sauz Ranch Mulatos Pasture #17542-489-30673 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 5300) | PluggedOil | 6,800 | Oct 29, 2012 | 5 | Jun 2013 |
| Sauz Ranch Mulatos Pasture #16942-489-30640 | Chestnut Explor. and Prod. Inc. | WillacyWillamar | PluggedOil | 8,150 | Aug 16, 2012 | 3 | May 2017 |
| Sauz Ranch Mulatos Pasture #18842-489-30868 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 6700) | PluggedOil | 9,100 | May 18, 2012 | 4 | May 2017 |
| Sauz Ranch Mulatos Pasture #20642-489-30875 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,070 | May 18, 2012 | 2 | May 2017 |
| Sauz Ranch Mulatos Pasture #20142-489-30879 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 5100) | PluggedOil | 9,075 | May 18, 2012 | 5 | May 2017 |
| Sauz Ranch Mulatos Pasture #1042-489-00205 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 7,951 | Jul 3, 1998 | 3 | May 2017 |
| Sauz Ranch Mulatos Pasture #1942-489-00330 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 6350) | PluggedOil | 7,725 | Jan 28, 1997 | 3 | May 2017 |
| Sauz Ranch Mulatos Pasture #16642-489-30637 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 5850) | PluggedOil | 6,800 | Dec 5, 1996 | 4 | Jul 2009 |
| Sauz Ranch Mulatos Pasture #16742-489-30659 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 5850) | PluggedOil | 6,800 | Sep 15, 1993 | 3 | Jul 2009 |
| Sauz Ranch Mulatos Pasture #4542-489-00151 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 7,981 | Sep 2, 1988 | 1 | — |
| Sauz Ranch Mulatos Pasture #5142-489-00142 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 7,953 | Jun 13, 1988 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #20542-489-30874 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,100 | Jun 7, 1988 | 2 | — |
| Sauz Ranch Mulatos Pasture #151 D42-489-00663 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 8,010 | Dec 10, 1986 | 3 | — |
| Sauz Ranch Mulatos Pasture #21542-489-30908 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,060 | Oct 3, 1986 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #7042-489-00218 | Chestnut Explor. and Prod. Inc. | WillacyWillamar | PluggedOil | 7,960 | Sep 8, 1986 | 2 | May 2017 |
| Sauz Ranch Mulatos Past. #18142-489-30825 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West (Miocene 6050 N) | ActiveWater Supply | 6,800 | Mar 12, 1986 | 2 | Mar 2000 |
| Sauz Ranch Mulatos Pasture #4942-489-00162 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 7,950 | Feb 14, 1986 | 4 | — |
| Sauz Ranch Mulatos Pasture #21042-489-30898 | Chestnut Explor. and Prod. Inc. | WillacyWillamar (Graben a-1 Sd. N.) | PluggedOil | 9,040 | Dec 19, 1985 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #20842-489-30896 | Chestnut Explor. and Prod. Inc. | WillacyWillamar (Graben a-1 Sd. N.) | PluggedOil | 9,015 | Dec 13, 1985 | 1 | — |
| Sauz Ranch Mulatos Pasture #20042-489-30880 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,065 | Jul 18, 1985 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #19042-489-30882 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,100 | Jul 18, 1985 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #21342-489-30869 | Chestnut Explor. and Prod. Inc. | WillacyWillamar (Graben a-1 Sd. N.) | PluggedOil | 7,900 | Jun 17, 1985 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #20342-489-30864 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,055 | Jun 4, 1985 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #4742-489-00306 | Chestnut Explor. and Prod. Inc. | WillacyWillamar | PluggedOil | 8,000 | Feb 12, 1985 | 2 | May 2017 |
| Sauz Ranch Mulatos Pasture #17742-489-30835 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 9,050 | Oct 29, 1984 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #4342-489-00163 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 7,950 | Feb 8, 1984 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #11642-489-00219 | Chestnut Explor. and Prod. Inc. | WillacyWillamar | PluggedOil | 7,744 | Feb 20, 1981 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #5742-489-00243 | Chestnut Explor. and Prod. Inc. | WillacyWillamar | PluggedOil | 7,752 | Jun 13, 1979 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #5542-489-00173 | Chestnut Explor. and Prod. Inc. | WillacyWillamar (Graben a-1 Sd. N.) | PluggedOil | 7,946 | Feb 16, 1979 | 1 | May 2017 |
| Sauz Ranch Mulatos Pasture #16142-489-30590 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | 8,400 | Sep 19, 1978 | 1 | May 2017 |
| Anderson Geo. #142-183-84761 | Chestnut Explor. and Prod. Inc. | GreggEast Texas | PluggedOil | — | — | 0 | — |
| Anderson Geo. #242-183-84762 | Chestnut Explor. and Prod. Inc. | GreggEast Texas | PluggedOil | — | — | 0 | — |
| Anderson Geo. #342-183-84763 | Chestnut Explor. and Prod. Inc. | GreggEast Texas | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #8142-489-00117 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | Not on scheduleOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #7342-489-00137 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #6042-489-00139 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #6642-489-00143 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #2342-489-00150 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #3042-489-00152 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #4442-489-00164 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #2242-489-00165 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #7242-489-00167 | Chestnut Explor. and Prod. Inc. | WillacyWillamar (Graben a-1 Sd. N.) | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #9542-489-00169 | Chestnut Explor. and Prod. Inc. | WillacyWillamar | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #4242-489-00174 | Chestnut Explor. and Prod. Inc. | WillacyWillamar (Graben a-1 Sd. N.) | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #4042-489-00176 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #8442-489-00181 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #542-489-00185 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |
| Sauz Ranch Mulatos Pasture #6142-489-00187 | Chestnut Explor. and Prod. Inc. | WillacyWillamar West | PluggedOil | — | — | 0 | — |