| 7-A Investment Ltd. #142-505-34287 | North Central Oil Corp. | Zapata, TXCharco (9200) | PluggedGas | 10,500 | Feb 9, 2001 | — | — |
| Las Piedras Gas Unit #142-505-34081 | North Central Oil Corp. | Zapata, TXRoleta (Wilcox Consolidated) | PluggedGas | 13,500 | Feb 4, 2000 | — | — |
| Belcher W. T. B #3442-039-01303 | North Central Oil Corp. | Brazoria, TXManvel (Basal Miocene) | PluggedGas | 6,757 | Jun 13, 1995 | — | — |
| Wiseman Joseph R. #1HZ42-013-33958 | North Central Oil Corp. | Atascosa, TXCoughran (Austin Chalk) | PluggedOil | 7,000 | Mar 28, 1991 | — | — |
| Henderson J. P. et al #142-481-33438 | North Central Oil Corp. | Wharton, TXWildcat | PluggedOil | 8,400 | Sep 12, 1990 | — | — |
| Hereford -T- #3442-479-35065 | North Central Oil Corp. | Webb, TXBashara-Hereford (7300) | PluggedGas | 8,200 | Jul 13, 1990 | — | — |
| Burkhart Harry G. et al #142-481-33266 | North Central Oil Corp. | Wharton, TXPin Oak (Frio 4585) | PluggedGas | 5,300 | May 26, 1989 | — | — |
| Patos Inc #142-481-33252 | North Central Oil Corp. | Wharton, TXLookout Creek (Yegua 7600) | PluggedGas | 8,200 | Apr 20, 1989 | — | — |
| H. O. F. A. #542-039-00132 | North Central Oil Corp. | Brazoria, TXManvel (Miocene 4550) | PluggedOil | 5,651 | Mar 6, 1989 | — | — |
| Hereford -T- #2942-479-34738 | North Central Oil Corp. | Webb, TXWildcat | PluggedGas | 7,500 | Aug 31, 1988 | — | — |
| Belcher W. T. a #29 F42-039-00217 | North Central Oil Corp. | Brazoria, TXManvel (Miocene -B- Upper) | PluggedGas | 4,200 | Aug 13, 1987 | — | — |
| Dreier John et al #242-175-32194 | North Central Oil Corp. | Goliad, TXMaetze (Catahoula 2340) | PluggedGas | 3,200 | Dec 11, 1986 | — | — |
| Dreier John H. et al #1A42-175-32178 | North Central Oil Corp. | Goliad, TXMaetze (Yegua 5500) | PluggedGas | 6,000 | Oct 28, 1986 | — | — |
| Galow Emma M. et al #142-239-32292 | North Central Oil Corp. | Jackson, TXSandy Creek (Frio 5080) | PluggedGas | 9,400 | Jun 5, 1986 | — | — |
| Stehno Charles #142-481-32754 | North Central Oil Corp. | Wharton, TXLouise West (Frio 5200) | PluggedGas | 11,000 | Apr 8, 1986 | — | — |
| Albritton #242-349-34047 | North Central Oil Corp. | Navarro, TXRural Shade (Rodessa) | PluggedOil | 8,000 | Jan 31, 1986 | — | — |
| H.O.F.A. NCT-1 #45 F42-039-00142 | North Central Oil Corp. | Brazoria, TXManvel (Miocene 2750) | PluggedGas | 3,600 | Jan 9, 1986 | — | — |
| Seidel Kurt #142-409-31864 | North Central Oil Corp. | San Patricio, TXOld Ingleside (C-1) | PluggedGas | 9,000 | Sep 20, 1985 | — | — |
| Vitera #142-481-32906 | North Central Oil Corp. | Wharton, TXLouise West (Frio 5000) | PluggedGas | 6,400 | Sep 10, 1985 | — | — |
| Belcher W. T. -a- #3642-039-30295 | North Central Oil Corp. | Brazoria, TXManvel (Miocene Upper) | PluggedOil | 4,610 | Jul 16, 1985 | — | — |
| White Heirs #142-213-30494 | North Central Oil Corp. | Henderson, TXCedar Creek S. (Smackover) | PluggedOil | 11,900 | Apr 24, 1985 | — | — |
| Atlantic-Sinclair Sec. 26 Fee #242-241-20047 | North Central Oil Corp. | Jasper, TXLe Verte Switch (Wilcox 1ST) | PluggedOil | 10,450 | Mar 28, 1985 | — | — |
| Atlantic-Sinclair Sec. 26 Fee #142-241-00246 | North Central Oil Corp. | Jasper, TXLe Verte Switch (Wilcox 1ST) | PluggedOil | 10,415 | Mar 11, 1985 | — | — |
| Reschke W.P.A. #142-213-30414 | North Central Oil Corp. | Henderson, TXCedar Creek S. (Smackover) | PluggedOil | 12,500 | Mar 7, 1984 | — | — |
| David T. James #142-095-30653 | North Central Oil Corp. | Concho, TXPaint Rock S.W. (Canyon Sd.) | PluggedOil | 4,089 | Jan 27, 1983 | — | — |
| Lemmer J. L. #642-039-00222 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | 5,764 | Sep 9, 1982 | — | — |
| Ewing O. F. #1142-039-00179 | North Central Oil Corp. | Brazoria, TXManvel (Miocene Upper) | PluggedGas | 3,460 | Dec 8, 1981 | — | — |
| Amend J. E. #142-111-30098 | North Central Oil Corp. | Dallam, TXKerrick (Cisco Lime) | PluggedGas | 5,925 | Jul 22, 1981 | — | — |
| Sanchez-McMurrey #100WS42-505-31309 | North Central Oil Corp. | Zapata, TXHundido (Lobo) | PluggedGas | 2,300 | Nov 6, 1980 | — | — |
| Belcher W. T. -a- #3742-039-30300 | North Central Oil Corp. | Brazoria, TXManvel (Miocene Upper) | PluggedOil | 5,610 | May 9, 1980 | — | — |
| Quinn B.E. Estate #342-351-00090 | North Central Oil Corp. | Newton, TXBlue Marsh (3800) | PluggedGas | 7,830 | Oct 10, 1978 | — | — |
| Quinn B.E. Estate #142-351-00088 | North Central Oil Corp. | Newton, TXBlue Marsh (Y-1) | PluggedOil | 7,920 | Oct 3, 1978 | — | — |
| Quinn B. E. Est. #242-351-00089 | North Central Oil Corp. | Newton, TXBlue Marsh (Yegua 5TH) | PluggedOil | 7,275 | Oct 3, 1978 | — | — |
| Hagan C. O. Gas Unit #142-215-30825 | North Central Oil Corp. | Hidalgo, TXCitrus City (7500) | PluggedGas | 10,152 | Jan 26, 1978 | — | — |
| Belcher W. T. -a- #4742-039-30540 | North Central Oil Corp. | Brazoria, TXManvel (Miocene Upper) | PluggedOil | 4,500 | Oct 7, 1977 | — | — |
| Way H. J. B #542-039-00022 | North Central Oil Corp. | Brazoria, TXManvel (F.B. II Oligocene) | PluggedOil | — | — | — | — |
| Dawson L. C. #142-039-00098 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | — | — | — | — |
| H. O. F. A. NCT-1 #3942-039-00115 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedGas | — | — | — | — |
| H. O. F. A. #4342-039-00131 | North Central Oil Corp. | Brazoria, TXManvel (Miocene 4550) | PluggedOil | — | — | — | — |
| H. O. F. A. NCT-1 #4442-039-00135 | North Central Oil Corp. | Brazoria, TXManvel (Miocene 4500) | PluggedGas | — | — | — | — |
| Ewing O. F. #542-039-00175 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | — | — | — | — |
| Ewing O. F. #642-039-00176 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | — | — | — | — |
| Ewing O. F. #442-039-00178 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | — | — | — | — |
| Ewing O. F. #242-039-00184 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | — | — | — | — |
| Ewing O. F. #1042-039-00185 | North Central Oil Corp. | Brazoria, TXManvel (Miocene) | PluggedOil | — | — | — | — |
| Ewing O. F. Lse #942-039-00186 | North Central Oil Corp. | Brazoria, TXManvel W. (Marg. 5470) | PluggedGas | — | — | — | — |
| Belcher W. T. -a- #342-039-00201 | North Central Oil Corp. | Brazoria, TXManvel (Miocene -B- Upper) | Not on scheduleOil | — | — | — | — |
| Belcher W. T. -a- #2042-039-00211 | North Central Oil Corp. | Brazoria, TXManvel (Miocene Upper) | PluggedOil | — | — | — | — |
| Belcher W. T. -a- #3042-039-00218 | North Central Oil Corp. | Brazoria, TXManvel (Miocene -B- Upper) | PluggedGas | — | — | — | — |
| Way H.J.-B- #642-039-00221 | North Central Oil Corp. | Brazoria, TXManvel (Miocene -B- Upper) | PluggedGas | — | — | — | — |