| J.M. O Brien JLB #1HHZ42-391-33276 | South Texas Operating Company | Refugio, TXGreta (4400) | ActiveOil | 4,383 | Oct 10, 2022 | — | — |
| Schoolfield #2HHZ42-283-37009 | South Texas Operating Company | La Salle, TXHawkville (Eagleford Shale) | ActiveGas | 11,688 | Feb 15, 2022 | — | — |
| Schoolfield #1HHZ42-283-37008 | South Texas Operating Company | La Salle, TXHawkville (Eagleford Shale) | ActiveGas | 11,707 | Jun 11, 2021 | — | — |
| AE 76 Ranch #1HHZ42-311-37126 | South Texas Operating Company | McMullen, TXEagleville (Eagle Ford-1) | ActiveOil | 11,124 | Feb 17, 2021 | — | — |
| Maria Luisa #3HHZ42-283-37007 | South Texas Operating Company | La Salle, TXHawkville (Eagleford Shale) | ActiveGas | 11,897 | Feb 28, 2020 | — | — |
| Magnolia #1HZ42-041-31139 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,948 | Sep 13, 2011 | — | — |
| Pecan #1HZ42-041-30960 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,710 | Mar 15, 2011 | — | — |
| Dr. Hank #1RHZ42-041-31053 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,513 | Jan 11, 2011 | — | — |
| Redbud Unit #1HZ42-041-30974 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,785 | Nov 30, 2010 | — | — |
| BDM #1HZ42-041-31437 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,705 | Oct 18, 2010 | — | — |
| Daniel Gas Unit #142-291-32811 | South Texas Operating Company | Liberty, TXVacation (Yegua 4\5) | ActiveOil | 11,360 | Apr 27, 2010 | — | — |
| Barnes #1REHZ42-041-31042 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,706 | Apr 26, 2010 | — | — |
| Bright Sky Ranch #1HHZ42-041-31484 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 11,418 | Apr 5, 2010 | — | — |
| Villarreal E #142-479-34028 | South Texas Operating Company | Webb, TXVillegas (Lobo) | PluggedGas | 12,500 | Mar 10, 2010 | — | — |
| Hoskins Unit #142-311-34205 | South Texas Operating Company | McMullen, TXA.W.P. (Olmos) | ActiveOil | 11,370 | Feb 18, 2010 | — | — |
| Bonner #1R42-291-32468 | South Texas Operating Company | Liberty, TXNolte Marsh (Yegua 13000) | PluggedGas | 14,700 | Jan 25, 2010 | — | — |
| Horned Frog #1REHZ42-041-31463 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,649 | Oct 28, 2009 | — | — |
| Van Deventer Gas Unit #142-291-32793 | South Texas Operating Company | Liberty, TXVacation (Yegua 4\5) | ActiveOil | 11,520 | Jun 17, 2009 | — | — |
| Bookman Peters #1HHZ42-041-32024 | South Texas Operating Company | Brazos, TXGiddings (Austin Chalk-3) | ActiveOil | 7,335 | Dec 19, 2008 | — | — |
| Zamora #242-215-33511 | South Texas Operating Company | Hidalgo, TXLa Reforma (L) | Temporarily abandonedGas | 7,950 | Aug 23, 2006 | — | — |
| Riggs E #242-163-31887 | South Texas Operating Company | Frio, TXPearsall (Austin Chalk) | PluggedOil | 6,500 | Apr 24, 2006 | — | — |
| Welder Heirs #142-131-38696 | South Texas Operating Company | Duval, TXSeven Sisters S. (Wilcox Lo.) | PluggedGas | 16,000 | Apr 23, 2004 | — | — |
| Daniel Governor Bill 161 GU #242-291-32516 | South Texas Operating Company | Liberty, TXRich Ranch (Y-6-E) | PluggedGas | 13,500 | Jan 7, 2004 | — | — |
| Bonner #242-291-32484 | South Texas Operating Company | Liberty, TXCarroll (8600) | PluggedGas | 14,800 | Jun 20, 2003 | — | — |
| Zamora #142-215-32918 | South Texas Operating Company | Hidalgo, TXLa Reforma (G-4) | PluggedGas | 6,800 | Mar 4, 2002 | — | — |
| Obrien J. M. #242-391-01034 | South Texas Operating Company | Refugio, TXGreta (4400) | PluggedOil | 3,900 | Mar 18, 1997 | — | — |
| Welder Leo J. Etal #142-131-36766 | South Texas Operating Company | Duval, TXSquire | PluggedOil | 3,911 | Jun 12, 1992 | — | — |
| Casas Unit #142-215-31567 | South Texas Operating Company | Hidalgo, TXEl Staggs (4100) | PluggedGas | 4,400 | Nov 21, 1984 | — | — |
| Ross #142-479-33251 | South Texas Operating Company | Webb, TXVaquillas Ranch (Wilcox-Lobo 1) | PluggedGas | 12,101 | Feb 22, 1982 | — | — |
| Welder J.F. Heirs C #c 942-131-01311 | South Texas Operating Company | Duval, TXSquire (2900) | PluggedGas | 3,878 | Oct 23, 1981 | — | — |
| Riggs G #142-163-31972 | South Texas Operating Company | Frio, TXPearsall (Austin Chalk) | PluggedOil | 6,500 | Mar 30, 1981 | — | — |
| Welder J. F.heirs-B- #242-131-31148 | South Texas Operating Company | Duval, TXSQUIRE(2400) | PluggedGas | — | — | — | — |
| Chapa Salomon #142-215-00755 | South Texas Operating Company | Hidalgo, TXTabasco (Heard FB 3) | PluggedOil | — | — | — | — |
| Chapa Salamon #342-215-00756 | South Texas Operating Company | Hidalgo, TXTabasco (4350 Sand) | PluggedGas | — | — | — | — |
| Obrien J. M. #942-391-00962 | South Texas Operating Company | Refugio, TXGreta (4400) | ActiveInjection | 4,395 | — | — | — |
| Obrien J. M. #1042-391-00963 | South Texas Operating Company | Refugio, TXGreta (4400) | PluggedOil | — | — | — | — |
| Obrien J. M. #142-391-01033 | South Texas Operating Company | Refugio, TXGreta (4400) | PluggedOil | — | — | — | — |
| Obrien J. M. #442-391-01036 | South Texas Operating Company | Refugio, TXGreta (4400) | PluggedOil | — | — | — | — |
| Obrien J. M. #542-391-01037 | South Texas Operating Company | Refugio, TXGreta (4400) | Not on scheduleOil | — | — | — | — |
| Obrien J. M. #642-391-01038 | South Texas Operating Company | Refugio, TXGreta (4400) | PluggedOil | — | — | — | — |
| Obrien J. M. #742-391-01039 | South Texas Operating Company | Refugio, TXGreta (4400) | PluggedOil | — | — | — | — |
| Obrien J. M. #1142-391-30147 | South Texas Operating Company | Refugio, TXGreta Deep (5660) | ActiveOil | 6,701 | — | — | — |