| Weedon-Weedon Unit #1REHZ42-041-31487 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 14,600 | Feb 12, 2009 | — | — |
| Terry-Terry Unit #2HZ42-041-32007 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 16,000 | Feb 11, 2008 | — | — |
| Terry-Terry Unit #1HZ42-041-31544 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 15,600 | Oct 8, 2007 | — | — |
| Keyser W. B. #1REHZ42-041-31742 | Enervest Operating L.L.C. | Brazos, TXNavasota River (Cretaceous Lwr.) | PluggedGas | 17,000 | Oct 19, 2005 | — | — |
| Rotello #1HHZ42-041-31833 | Enervest Operating L.L.C. | Brazos, TXNavasota River (Cretaceous Lwr.) | PluggedGas | 16,150 | Feb 5, 2003 | — | — |
| Wade L. S. #1REHZ42-041-31611 | Enervest Operating L.L.C. | Brazos, TXNavasota River (Cretaceous Lwr.) | PluggedGas | 15,300 | Sep 19, 2001 | — | — |
| Jones-Foster Unit #1HZ42-041-31723 | Enervest Operating L.L.C. | Brazos, TXKurten (Buda) | PluggedOil | 14,500 | Aug 18, 1999 | — | — |
| Wheeler-Wheeler a Unit #1HZ42-041-31619 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 13,300 | Feb 8, 1999 | — | — |
| Raceway #1HZ42-041-31893 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 14,000 | Nov 19, 1996 | — | — |
| A. M. Holligan Unit #2HHZ42-041-31376 | Enervest Operating L.L.C. | Brazos, TXIola (Georgetown) | PluggedGas | 12,500 | Apr 26, 1996 | — | — |
| Reveille Unit #1HZ42-041-31871 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 11,000 | Aug 24, 1995 | — | — |
| Waltman #1HZ42-041-31843 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,000 | Oct 24, 1994 | — | — |
| Jones-Cashion Unit #1HZ42-041-31827 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 9,900 | Jul 21, 1994 | — | — |
| Dunlap-Keyser Unit #1HZ42-041-31767 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 12,700 | May 12, 1994 | — | — |
| Adkins Unit #1HHZ42-041-31818 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 15,500 | May 12, 1994 | — | — |
| Akin-Foxfire Unit #1HZ42-041-31795 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 14,516 | Dec 9, 1993 | — | — |
| Freeman-Creagor Unit #1HZ42-041-31791 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 11,000 | Nov 15, 1993 | — | — |
| Ritchey #1HZ42-041-31777 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 14,089 | Sep 21, 1993 | — | — |
| Lake-Smith Unit #1HZ42-041-31756 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 11,500 | Jul 14, 1993 | — | — |
| Tison-Geudry Unit #1HZ42-041-31754 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk Gas) | PluggedGas | 12,000 | Jun 29, 1993 | — | — |
| Boriskie-Diversified Unit #1HZ42-041-31746 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 10,000 | May 7, 1993 | — | — |
| Bryan-College Station Unit #1HZ42-041-31696 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 9,350 | Nov 24, 1992 | — | — |
| Dominik-Holligan Unit #1HZ42-041-31599 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 13,000 | Mar 11, 1992 | — | — |
| Wheeler-Wheeler B Unit #2HZ42-041-31592 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 13,700 | Mar 6, 1992 | — | — |
| Wheeler B #4HZ42-041-31597 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 13,300 | Feb 27, 1992 | — | — |
| Brazos Coal Ltd.-Raceway Ut. #1HZ42-041-31586 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 15,600 | Feb 7, 1992 | — | — |
| H. L. Terry Unit #1HZ42-041-31548 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 15,000 | Oct 28, 1991 | — | — |
| Olden-Olden Unit #1HZ42-041-31545 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 15,000 | Oct 22, 1991 | — | — |
| Akin J.M. #142-041-30595 | Enervest Operating L.L.C. | Brazos, TXGiddings (Austin Chalk-3) | PluggedOil | 12,000 | May 18, 1981 | — | — |