| Gutierrez J. R. #142-505-33924 | EOG Resources Inc. | Zapata, TXLos Mogotes (7400) | PluggedGas | 9,100 | Apr 6, 1999 | — | — |
| Trevino J. B. #342-505-33923 | Merit Energy Company | Zapata, TXSan Ygnacio E. (Wilcox 8600) | ActiveGas | 8,820 | Apr 1, 1999 | — | — |
| La Perla #20542-505-33920 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 9,850 | Mar 30, 1999 | — | — |
| La Perla #20442-505-33921 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 10,300 | Mar 30, 1999 | — | — |
| Lundell B #442-505-33922 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 11,305 | Mar 30, 1999 | — | — |
| Martinez-Rangel G.U. #142-505-33918 | Hilcorp Energy Company | Zapata, TXCisco-Benavides (Lobo Cons.) | ActiveGas | 9,950 | Mar 25, 1999 | — | — |
| Garza L. et al Estate of #142-505-33917 | Hilcorp Energy Company | Zapata, TXHaynes (Middle Wilcox Cons.) | ActiveGas | 14,020 | Mar 23, 1999 | — | — |
| La Perla #20242-505-33916 | Conocophillips Company | Zapata, TXLa Perla (Lobo Cons.) | PluggedGas | 10,700 | Mar 17, 1999 | — | — |
| RMT 38 #242-505-33915 | — | Zapata, TXLas Lomas (Wilcox 7800) | Plugged | 9,400 | Mar 15, 1999 | — | — |
| Ramirez J. S. #342-505-33912 | Hilcorp Energy Company | Zapata, TXRoleta (Wilcox Consolidated) | ActiveGas | 11,122 | Mar 12, 1999 | — | — |
| La Perla #20342-505-33913 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 9,650 | Mar 12, 1999 | — | — |
| Garza L. #842-505-33911 | Mountain V Texas LLC | Zapata, TXHaynes (Middle Wilcox Cons.) | ActiveGas | 11,550 | Mar 11, 1999 | — | — |
| McMurrey Wm. #5242-505-33909 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 10,280 | Mar 5, 1999 | — | — |
| Vela L. G. #142-505-33908 | Eex E&P Company L.P. | Zapata, TXHaynes (Middle Wilcox Cons.) | PluggedGas | 11,700 | Mar 3, 1999 | — | — |
| Rathmell J. G. #1842-505-33682 | Merit Energy Company | Zapata, TXHundido (Lobo) | ActiveGas | 10,510 | Feb 25, 1999 | — | — |
| Sanchez-McMurrey #1942-505-33694 | Merit Energy Company | Zapata, TXHundido (9300) | ActiveGas | 11,700 | Feb 25, 1999 | — | — |
| Villarreal-Zapata #442-505-33907 | Varas Energy Operating Company | Zapata, TXUrebeno South (Wilcox 7000) | ActiveGas | 7,193 | Feb 25, 1999 | — | — |
| Haynes Estate #642-505-01790 | Sheridan Energy Inc. | Zapata, TXLos Mogotes North (Wilcox IV) | PluggedGas | 5,022 | Feb 24, 1999 | — | — |
| King B #442-505-33906 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 9,020 | Feb 24, 1999 | — | — |
| Sanchez-McMurrey #942-505-32995 | Merit Energy Company | Zapata, TXHundido (9300) | ActiveGas | 10,890 | Feb 22, 1999 | — | — |
| Cuellar Trust #142-505-33905 | XTO Energy Inc. | Zapata, TXLas Lomas (Wilcox 7800) | PluggedGas | 9,000 | Feb 19, 1999 | — | — |
| Gutierrez J.M. a #542-505-33029 | Varas Energy Operating Company | Zapata, TXCinco de Mayo (Consolidated) | Temporarily abandonedGas | 7,600 | Feb 16, 1999 | — | — |
| Alexander #242-505-33805 | EOG Resources Inc. | Zapata, TXAlejandrenas (7400) | PluggedGas | 9,800 | Feb 16, 1999 | — | — |
| Ramirez L. O. a #1142-505-33904 | Hilcorp Energy Company | Zapata, TXRoleta (Wilcox Consolidated) | ActiveGas | 10,944 | Feb 16, 1999 | — | — |
| Canales #1842-505-33902 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | Temporarily abandonedGas | 11,000 | Feb 11, 1999 | — | — |
| Canales #1942-505-33903 | Conoco Inc. | Zapata, TXWildcat | PluggedGas | 10,800 | Feb 11, 1999 | — | — |
| Ramirez Ramiro #142-505-33899 | Hilcorp Energy Company | Zapata, TXHaynes (Middle Wilcox Cons.) | ActiveGas | 11,000 | Feb 10, 1999 | — | — |
| J. O. D. #842-505-33900 | Hilcorp Energy Company | Zapata, TXHaynes (Middle Wilcox Cons.) | ActiveGas | 11,700 | Feb 10, 1999 | — | — |
| Mann E & E Trust #242-505-33898 | Hugoton Operating Company Inc. | Zapata, TXJ. C. Martin (Lobo) | Temporarily abandonedGas | 10,550 | Feb 3, 1999 | — | — |
| Haynes #1842-505-33896 | Hilcorp Energy Company | Zapata, TXHaynes (Hinnant Cons.) | ActiveGas | 15,065 | Feb 2, 1999 | — | — |
| Haynes #1942-505-33897 | Hilcorp Energy Company | Zapata, TXHaynes (Hinnant Cons.) | Temporarily abandonedGas | 13,280 | Feb 2, 1999 | — | — |
| Haynes #1842-505-33895 | Union Pacific Resources Company | Zapata, TXHaynes JRS (Wilcox 13000) | Not on schedule | 15,000 | Jan 29, 1999 | — | — |
| Haynes E #742-505-33894 | Hilcorp Energy Company | Zapata, TXHaynes (Hinnant Cons.) | Temporarily abandonedGas | 12,722 | Jan 28, 1999 | — | — |
| Garza #142-505-33776 | Tesoro E&P Company L.P. | Zapata, TXManos PA Arribas (4TH Hinnant) | PluggedGas | 10,500 | Jan 27, 1999 | — | — |
| Guerra Avelina #5AHZ42-505-33801 | Vantage Operating II LLC | Zapata, TXLopeno (Consolidated) | ActiveGas | 12,398 | Jan 26, 1999 | — | — |
| Garza, A. #142-505-33890 | Samson Lone Star LP | Zapata, TX | Not on schedule | 10,500 | Jan 26, 1999 | — | — |
| Ramon Belia et al #342-505-33893 | Hilcorp Energy Company | Zapata, TXCisco-Benavides (Lobo Cons.) | ActiveGas | 8,824 | Jan 19, 1999 | — | — |
| Old Zapata Deep GU #542-505-33891 | Varas Energy Operating Company | Zapata, TXUrebeno South (Wilcox 7000) | ActiveGas | 9,400 | Jan 14, 1999 | — | — |
| Cuellar Maria #1442-505-33892 | — | Zapata, TX | Plugged | 11,200 | Jan 14, 1999 | — | — |
| Garcia, Israel #142-505-33889 | Conoco Inc. | Zapata, TX | Not on schedule | 17,100 | Jan 8, 1999 | — | — |
| Haynes Mineral Trust #842-505-32519 | Hilcorp Energy Company | Zapata, TXHaynes (Middle Wilcox Cons.) | Temporarily abandonedGas | 13,822 | Jan 6, 1999 | — | — |
| Jennings #6942-505-33888 | Devon Energy Production Co L.P. | Zapata, TXWildcat | PluggedGas | 10,500 | Dec 31, 1998 | — | — |
| Garza Lauro #e 142-505-32072 | Denali Oil & Gas Management LLC | Zapata, TXHaynes (Hinnant Cons.) | PluggedGas | 14,000 | Dec 28, 1998 | — | — |
| Guerra L #1642-505-33886 | Hilcorp Energy Company | Zapata, TXRoleta (Wilcox Consolidated) | ActiveGas | 9,903 | Dec 22, 1998 | — | — |
| La Perla B1 #1042-505-33887 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | Temporarily abandonedGas | 9,700 | Dec 22, 1998 | — | — |
| Jennings #5942-505-32657 | Hilcorp Energy Company | Zapata, TXJennings (Wilcox Consolidated) | Temporarily abandonedGas | 12,400 | Dec 16, 1998 | — | — |
| La Perla #20142-505-33884 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 9,737 | Dec 10, 1998 | — | — |
| Vidaurri R. et al #3142-505-33883 | Hilcorp Energy Company | Zapata, TXDye West (Wilcox 7800) | ActiveGas | 8,170 | Dec 9, 1998 | — | — |
| Vela Serapio Heirs B #2342-505-33881 | Hilcorp Energy Company | Zapata, TXRoleta (Wilcox Consolidated) | ActiveGas | 9,137 | Dec 7, 1998 | — | — |
| La Perla #20042-505-33882 | Hilcorp Energy Company | Zapata, TXLa Perla (Lobo Cons.) | ActiveGas | 8,900 | Dec 7, 1998 | — | — |