| Serna Gas Unit #142-505-31368 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXWildcat | PluggedGas | 12,000 | Oct 8, 1996 | — | — |
| Hubberd Estate -B- #142-479-34855 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXHubberd -B- (Wilcox 7300) | PluggedGas | 10,000 | Aug 25, 1995 | — | — |
| Remmers (Deep) Gas Unit #542-123-31745 | Sanchez-O Brien Oil & Gas Corp. | De Witt, TXWildcat | PluggedGas | 14,500 | Feb 1, 1994 | — | — |
| Casso Ltd #342-479-35135 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXLaredo (Lobo) | PluggedGas | 9,500 | Dec 14, 1990 | — | — |
| Leyendecker-Ramirez GU 1 #342-479-35056 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXBarrera (Lobo 6) | PluggedGas | 8,900 | Jun 13, 1990 | — | — |
| Casso Ltd. #2HZ42-479-34884 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXLaredo (Lobo) | PluggedGas | 9,200 | Jan 30, 1990 | — | — |
| Gutierrez #142-505-32618 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXWildcat | PluggedGas | 11,700 | Nov 8, 1989 | — | — |
| Barrera-Leyendecker Gas Unit 2 #142-479-34904 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXBarrera (Lobo 6) | PluggedGas | 9,600 | Aug 21, 1989 | — | — |
| Hein Estate #142-479-34897 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXWildcat | PluggedGas | 9,300 | Jul 31, 1989 | — | — |
| Sanchez A. R. #142-505-32567 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXWildcat | PluggedGas | 15,500 | Jun 26, 1989 | — | — |
| Leyendecker-Ramirez GU 1 #142-479-34786 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXLaredo (Lobo) | PluggedGas | 9,500 | Dec 2, 1988 | — | — |
| Hereford L.M. #3342-479-34763 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXWildcat | PluggedGas | 8,300 | Oct 21, 1988 | — | — |
| Crawford Estate #242-297-31619 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXGeorge West West (7400 Sd.) | PluggedOil | 9,500 | Oct 7, 1988 | — | — |
| Hereford L.M. #3042-479-34746 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXWildcat | PluggedOil | 8,600 | Sep 15, 1988 | — | — |
| Herford L.M. #3242-479-34735 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXBashara-Hereford (7300) | PluggedGas | 8,800 | Aug 24, 1988 | — | — |
| O Keefe #242-479-34667 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXWildcat | PluggedOil | 8,300 | Apr 11, 1988 | — | — |
| Bodden Charles L. #542-297-32127 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXGeorge West W. (7250) | PluggedGas | 10,000 | Mar 10, 1988 | — | — |
| San Isidro Farm #142-479-34627 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXWildcat | PluggedGas | 8,900 | Jan 7, 1988 | — | — |
| Bodden Charles L. #342-297-30985 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXGeorge West West (7500 Wilcox) | PluggedGas | 9,025 | Dec 9, 1987 | — | — |
| Hereford L.M. #2142-479-34496 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXBashara-Hereford (7300) | PluggedGas | 8,700 | Mar 17, 1987 | — | — |
| Hereford L.M. B #1942-479-34459 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXBashara-Hereford (7300) | PluggedGas | 9,700 | Dec 30, 1986 | — | — |
| State Tract 40 #142-071-31572 | Sanchez-O Brien Oil & Gas Corp. | Chambers, TXWhites Bayou W. (F-12) | PluggedGas | 11,000 | Apr 29, 1986 | — | — |
| Norris #142-355-31401 | Sanchez-O Brien Oil & Gas Corp. | Nueces, TXBobby Lynn King (Vxbg 8285) | PluggedOil | 9,000 | Nov 15, 1985 | — | — |
| Heffelfinger Heirs #142-321-31367 | Sanchez-O Brien Oil & Gas Corp. | Matagorda, TXTidehaven (8450) | PluggedOil | 12,700 | Apr 1, 1985 | — | — |
| Laurel Angel R. #242-505-31513 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXLas Ovejas (Wilcox 9550) | PluggedGas | 12,500 | Feb 19, 1985 | — | — |
| Rogers GU 2 #242-071-31666 | Sanchez-O Brien Oil & Gas Corp. | Chambers, TXWhites Bayou S. (TX Warreni) | PluggedGas | 10,100 | Jan 8, 1985 | — | — |
| Bobby Lynn King Gas Unit #142-355-31287 | Sanchez-O Brien Oil & Gas Corp. | Nueces, TXBobby Lynn King (Frio 7310) | PluggedGas | 9,000 | Aug 9, 1984 | — | — |
| State Tract 39 #142-071-31599 | Sanchez-O Brien Oil & Gas Corp. | Chambers, TXWildcat | PluggedOil | 10,500 | Aug 7, 1984 | — | — |
| Garcia Estella B #242-131-33623 | Sanchez-O Brien Oil & Gas Corp. | Duval, TXSan Diego SW (Yegua 6550) | PluggedOil | 7,000 | Jul 13, 1984 | — | — |
| Pena Catarino #142-479-33922 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXOrtiz (Lobo) | PluggedGas | 8,500 | Jul 3, 1984 | — | — |
| Gutierrez Oscar M. et al #142-505-31180 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXBig Mac (6470) | PluggedGas | 11,300 | Feb 27, 1984 | — | — |
| Glasscock-Frost #142-311-31650 | Sanchez-O Brien Oil & Gas Corp. | McMullen, TXBrazil SW (Slick) | PluggedGas | 11,500 | Nov 28, 1983 | — | — |
| Brysch-Owens G.U.1 #142-297-33232 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXGeorge West W (6400) | PluggedGas | 14,000 | Nov 16, 1983 | — | — |
| Welder J. F. Heirs #159142-131-36238 | Sanchez-O Brien Oil & Gas Corp. | Duval, TXSeven Sisters E. (Reagan B) | PluggedGas | 12,975 | Jun 3, 1983 | — | — |
| Oliveira L. T. et al #1A42-131-35187 | Sanchez-O Brien Oil & Gas Corp. | Duval, TXNorosena Creek (4750) | PluggedGas | 5,512 | Apr 20, 1983 | — | — |
| Geffert Gas Unit No. 2 #142-297-33306 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXFant S. (Wilcox 10760) | PluggedGas | 13,500 | Apr 8, 1983 | — | — |
| Wright Trust #142-355-30810 | Sanchez-O Brien Oil & Gas Corp. | Nueces, TXMinnie Bock N.(5970) | PluggedGas | 8,500 | Mar 15, 1983 | — | — |
| Welder Leo J. Etal #242-131-36140 | Sanchez-O Brien Oil & Gas Corp. | Duval, TXSeven Sisters E. (Reagan) | PluggedGas | 12,000 | Nov 30, 1982 | — | — |
| Pavelka Gas Unit #142-355-31478 | Sanchez-O Brien Oil & Gas Corp. | Nueces, TXRobstown W. (6900) | PluggedGas | 9,000 | Nov 8, 1982 | — | — |
| Renken Edgar #142-355-32070 | Sanchez-O Brien Oil & Gas Corp. | Nueces, TXMinnie Bock N. (7900) | PluggedGas | 9,600 | Sep 20, 1982 | — | — |
| Martin S. J. #2A42-479-32460 | Sanchez-O Brien Oil & Gas Corp. | Webb, TXMoritas Creek West(wilcox 7535) | PluggedGas | 11,500 | Aug 5, 1982 | — | — |
| Brown George W. #142-241-30340 | Sanchez-O Brien Oil & Gas Corp. | Jasper, TXTurpentine (Lime 10 390) | PluggedOil | 10,806 | Jul 20, 1982 | — | — |
| Bodden Charles L. #642-297-32661 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXFant (Wilcox 10000) | PluggedGas | 12,000 | Jun 30, 1982 | — | — |
| 3D Ranch Ltd GU 1 #142-505-31185 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXBlancas Creek (Wilcox 8030) | PluggedGas | 10,500 | Jun 30, 1982 | — | — |
| Rogers GU 2 #142-071-31338 | Sanchez-O Brien Oil & Gas Corp. | Chambers, TXWhites Bayou S. (TX Warreni) | PluggedGas | 10,100 | Apr 21, 1982 | — | — |
| Owens Kittie West et al #142-297-33008 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXGeorge West West (8600) | PluggedGas | 11,000 | Apr 7, 1982 | — | — |
| Heath-Lawrence #142-355-31545 | Sanchez-O Brien Oil & Gas Corp. | Nueces, TXPetronilla Creek (6850) | PluggedGas | 8,200 | Mar 12, 1982 | — | — |
| Bodden Frost Gas Unit 1 #142-297-32067 | Sanchez-O Brien Oil & Gas Corp. | Live Oak, TXGeorge West West (9500) | PluggedGas | 12,500 | Jan 27, 1982 | — | — |
| Rogers B.B. Gas Unit 1 #142-071-31277 | Sanchez-O Brien Oil & Gas Corp. | Chambers, TXWhites Bayou S. (TX Warreni) | PluggedGas | 11,300 | Nov 17, 1981 | — | — |
| Lauro Garza et al #142-505-31298 | Sanchez-O Brien Oil & Gas Corp. | Zapata, TXLauro Garza (Wilcox Lo. 11 500) | PluggedGas | 15,000 | Nov 5, 1981 | — | — |