| O Brien-Harkins #5-T42-175-33077 | C & E Operating Inc. | Goliad, TXObrien Ranch (Frio 4650) | PluggedGas | 5,000 | Mar 19, 1998 | — | — |
| Welder Heirs #242-391-32232 | C & E Operating Inc. | Refugio, TXDevils Run (Chamberlain 3A) | PluggedGas | 6,500 | Mar 19, 1998 | — | — |
| O Brien-Harkins #342-175-33071 | C & E Operating Inc. | Goliad, TXObrien Ranch (4500) | PluggedGas | 5,000 | Feb 23, 1998 | — | — |
| Thomson-Barrow Corp. #1742-025-32876 | C & E Operating Inc. | Bee, TXBurkes Ridge (Greta) | PluggedGas | 3,100 | Feb 18, 1998 | — | — |
| O Brien J. M. #742-025-32875 | C & E Operating Inc. | Bee, TXObrien Ranch (3820) | PluggedGas | 4,900 | Feb 10, 1998 | — | — |
| White Ranch #242-025-32874 | C & E Operating Inc. | Bee, TXWildcat | PluggedGas | 5,800 | Feb 5, 1998 | — | — |
| O Brien-Harkins #242-175-33060 | C & E Operating Inc. | Goliad, TXObrien Ranch (3820) | PluggedGas | 4,900 | Jan 29, 1998 | — | — |
| O Brien-Harkins #142-175-33055 | C & E Operating Inc. | Goliad, TXObrien Ranch (3820) | PluggedGas | 4,900 | Jan 15, 1998 | — | — |
| Welder Heirs #142-391-32213 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,100 | Jan 13, 1998 | — | — |
| Thomson-Barrow Corp. #15-T42-025-32859 | C & E Operating Inc. | Bee, TXBurkes Ridge (2040) | PluggedGas | 3,150 | Nov 20, 1997 | — | — |
| Thomson-Barrow Corp. C #942-391-32205 | C & E Operating Inc. | Refugio, TXLaura Thomson (Vicksburg 5907) | PluggedGas | 6,200 | Nov 18, 1997 | — | — |
| Thomson-Barrow Corp. #1642-025-32854 | C & E Operating Inc. | Bee, TXWildcat | PluggedGas | 6,000 | Oct 30, 1997 | — | — |
| Thomson-Barrow Corp. #1-T42-025-32758 | C & E Operating Inc. | Bee, TXBurkes Ridge (2040) | PluggedGas | 5,511 | Sep 29, 1997 | — | — |
| Thomson-Barrow Corp.c #742-025-32847 | C & E Operating Inc. | Bee, TXLaura Thomson (4850) | PluggedGas | 6,000 | Sep 22, 1997 | — | — |
| Thomson-Barrow Corp. C #642-025-32848 | C & E Operating Inc. | Bee, TXLaura Thomson (4850) | PluggedGas | 6,000 | Sep 22, 1997 | — | — |
| Thomson-Barrow Corp. #1342-025-32843 | C & E Operating Inc. | Bee, TXBurkhollow (2600 Sand) | PluggedGas | 3,200 | Aug 26, 1997 | — | — |
| Thomson-Barrow Corp. C #542-025-32830 | C & E Operating Inc. | Bee, TXLaura Thomson (4850) | PluggedGas | 6,000 | Jun 16, 1997 | — | — |
| Thomson-Barrow Corp. #1142-025-32826 | C & E Operating Inc. | Bee, TXBurkes Ridge (1600) | PluggedGas | 6,000 | May 14, 1997 | — | — |
| Thomson-Barrow Corp. #1242-025-32827 | C & E Operating Inc. | Bee, TXLaura Thomson SW (5100) | PluggedOil | 6,000 | May 14, 1997 | — | — |
| Thomson- Barrow Corp. C #442-025-32822 | C & E Operating Inc. | Bee, TXHeard Ranch (3900) | PluggedGas | 6,000 | Apr 9, 1997 | — | — |
| Thomson-Barrow Corp. C #242-025-32820 | C & E Operating Inc. | Bee, TXBurkhollow (2600 Sand) | PluggedGas | 4,100 | Mar 27, 1997 | — | — |
| Thomson-Barrow Corp. C #342-025-32821 | C & E Operating Inc. | Bee, TXWildcat | PluggedGas | 6,000 | Mar 27, 1997 | — | — |
| Thomson-Barrow Corp. C #142-025-32816 | C & E Operating Inc. | Bee, TXLaura Thomson (4850) | PluggedGas | 6,000 | Mar 6, 1997 | — | — |
| Thomson-Barrow Corp. #542-025-32770 | C & E Operating Inc. | Bee, TXBurkhollow W. (1900) | PluggedGas | 5,650 | Oct 24, 1996 | — | — |
| O Brien J. M. #242-025-32790 | C & E Operating Inc. | Bee, TXObrien Ranch (3820) | PluggedGas | 4,800 | Oct 17, 1996 | — | — |
| O Brien J. M. #142-025-32785 | C & E Operating Inc. | Bee, TXBlanconia (3700) | PluggedGas | 5,000 | Sep 3, 1996 | — | — |
| Thomson-Barrow Corp. #242-025-32757 | C & E Operating Inc. | Bee, TXBurkes Ridge (2040) | PluggedGas | 5,500 | Jul 16, 1996 | — | — |
| Thomson-Barrow Corp. #642-025-32775 | C & E Operating Inc. | Bee, TXPapalote (4800) | PluggedGas | 6,000 | Jul 16, 1996 | — | — |
| Thomson-Barrow Corp. #442-025-32767 | C & E Operating Inc. | Bee, TXPapalote (4800) | PluggedGas | 5,650 | May 14, 1996 | — | — |
| Matusek #142-481-33695 | C & E Operating Inc. | Wharton, TXSpanish Camp (Ely 4550) | PluggedGas | 5,600 | Dec 7, 1995 | — | — |
| Lovell-Schwab #142-481-33765 | C & E Operating Inc. | Wharton, TXEgypt (Frio 4290) | PluggedGas | 4,800 | Feb 3, 1995 | — | — |
| Drushel #142-239-32829 | C & E Operating Inc. | Jackson, TXLost Bridge (Laurie) | PluggedGas | 5,700 | Oct 27, 1994 | — | — |
| McCann #142-469-33057 | C & E Operating Inc. | Victoria, TXSalem (Vandan Sand) | PluggedGas | 4,000 | Aug 23, 1994 | — | — |
| Sorrel Marcial #142-481-33724 | C & E Operating Inc. | Wharton, TXSpanish Camp (Sorrel Sand) | PluggedGas | 5,600 | Jul 27, 1994 | — | — |
| Mestena Inc. #1042-047-31663 | C & E Operating Inc. | Brooks, TXAlta Mesa N. (1100) | PluggedGas | 2,000 | Mar 30, 1994 | — | — |
| Mestena Inc. #942-047-31664 | C & E Operating Inc. | Brooks, TXAlta Mesa N. (1500) | PluggedGas | 2,000 | Mar 30, 1994 | — | — |
| Otell Harry E. Jr. #142-481-33348 | C & E Operating Inc. | Wharton, TXJones Creek (4200 Frio) | PluggedGas | 8,400 | May 25, 1993 | — | — |
| Fucik George #142-481-33259 | C & E Operating Inc. | Wharton, TXJones Creek N. (5050) | PluggedGas | 8,300 | May 15, 1989 | — | — |
| Mestena Oil & Gas #842-047-30860 | C & E Operating Inc. | Brooks, TXAlta Mesa N. (1100) | PluggedGas | 3,000 | Jul 30, 1982 | — | — |
| Mestena Oil & Gas Company #5 F42-047-30059 | C & E Operating Inc. | Brooks, TXAlta Mesa N. (2000) | PluggedGas | 2,665 | Dec 30, 1981 | — | — |
| Mestena Oil & Gas Co. Lease #742-047-30689 | C & E Operating Inc. | Brooks, TXAlta Mesa N. (4100) | PluggedGas | 5,500 | Aug 6, 1980 | — | — |
| Mestena Oil & Gas Company #642-047-30692 | C & E Operating Inc. | Brooks, TXAlta Mesa N. (1100) | PluggedGas | 6,000 | Sep 19, 1978 | — | — |