| Welder Heirs #342-391-32360 | C & E Operating Inc. | Refugio, TXDevils Run (5970 Frio) | PluggedGas | 6,500 | Jun 7, 2000 | — | — |
| Welder Heirs B #442-391-32357 | C & E Operating Inc. | Refugio, TXDevils Run (Chamberlain 3A) | PluggedOil | 6,500 | Jun 6, 2000 | — | — |
| Swyka #642-391-32358 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,100 | Jun 6, 2000 | — | — |
| Rooke F. B. 4 #642-391-32348 | C & E Operating Inc. | Refugio, TXWoodsboro West (Corr Sand) | PluggedGas | 7,300 | May 5, 2000 | — | — |
| Wood #242-391-32346 | C & E Operating Inc. | Refugio, TXDevils Run (6200) | PluggedGas | 6,500 | May 2, 2000 | — | — |
| Hughes J. W. FLP #142-025-32823 | C & E Operating Inc. | Bee, TXHeard Ranch (4800) | PluggedGas | 5,500 | Feb 1, 2000 | — | — |
| Rooke F. B. 4 #342-391-32327 | C & E Operating Inc. | Refugio, TXRoche (5800) | PluggedGas | 7,200 | Jan 26, 2000 | — | — |
| O Brien-Harkins #1142-175-33223 | C & E Operating Inc. | Goliad, TXCircle -a- (5000) | PluggedGas | 5,100 | Jan 25, 2000 | — | — |
| Thomson-Barrow Corp. C #1842-025-32993 | C & E Operating Inc. | Bee, TXLaura Thomson S.E. (Chamberlain) | PluggedGas | 6,300 | Jan 14, 2000 | — | — |
| O Brien-Harkins a #442-025-32992 | C & E Operating Inc. | Bee, TXBerclair E. (Frio Middle) | PluggedGas | 4,000 | Jan 10, 2000 | — | — |
| Thomson-Barrow Corp. C #1742-391-32323 | C & E Operating Inc. | Refugio, TXDaniel O. Driscoll (Vksbg. 5900) | PluggedGas | 6,200 | Jan 5, 2000 | — | — |
| Prochaska Oil Unit #142-409-32606 | C & E Operating Inc. | San Patricio, TXBeeline (Tynan Sand) | PluggedOil | 10,900 | Nov 18, 1999 | — | — |
| Lucas R. M. #442-175-33197 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 3,900 | Nov 16, 1999 | — | — |
| Cartwright Trust #642-175-33186 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,000 | Oct 12, 1999 | — | — |
| Rooke F. B. 4 #142-391-32306 | C & E Operating Inc. | Refugio, TXWoodsboro West (Frio 6600) | PluggedGas | 7,500 | Sep 28, 1999 | — | — |
| Lucas R. M. #342-175-33184 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,000 | Sep 22, 1999 | — | — |
| Thomson-Barrow Corp. C #16-T42-391-32304 | C & E Operating Inc. | Refugio, TXLaura Thomson (5600) | PluggedGas | 6,050 | Sep 15, 1999 | — | — |
| Lucas R. M. #242-175-33177 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,000 | Aug 19, 1999 | — | — |
| Powers J. M. #242-175-33174 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,500 | Aug 4, 1999 | — | — |
| Rooke F. B. 5 #142-391-32288 | C & E Operating Inc. | Refugio, TXWildcat | PluggedGas | 7,000 | Jul 9, 1999 | — | — |
| Cartwright Trust #542-175-33156 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,500 | Jun 9, 1999 | — | — |
| Hughes J. W. F. L. P. #242-025-32952 | C & E Operating Inc. | Bee, TXHeard Ranch (4800) | PluggedGas | 5,600 | May 13, 1999 | — | — |
| O Brien-Harkins #442-025-32951 | C & E Operating Inc. | Bee, TXObrien Ranch (3820) | PluggedGas | 4,800 | May 11, 1999 | — | — |
| Rooke F. B. 7 #2-T42-391-32269 | C & E Operating Inc. | Refugio, TXRoche North (Frio 7000) | PluggedGas | 7,600 | Mar 30, 1999 | — | — |
| Powers J. N. #142-175-33146 | C & E Operating Inc. | Goliad, TXObrien Ranch (3820) | PluggedGas | 4,500 | Mar 11, 1999 | — | — |
| Cartwright Trust #442-175-33142 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,500 | Mar 10, 1999 | — | — |
| Powers J. M. #142-175-33143 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,500 | Mar 10, 1999 | — | — |
| O Brien J. M. #4-C42-025-32795 | C & E Operating Inc. | Bee, TXObrien Ranch (3820) | PluggedGas | 5,000 | Feb 25, 1999 | — | — |
| Schmidt #342-391-32266 | C & E Operating Inc. | Refugio, TXTelarana (Frio 4400) | PluggedGas | 6,100 | Feb 23, 1999 | — | — |
| Thomson-Barrow Corp. C #1342-025-32935 | C & E Operating Inc. | Bee, TXLaura Thomson S. (5200) | PluggedGas | 6,010 | Jan 29, 1999 | — | — |
| O Brien-Harkins #942-175-33136 | C & E Operating Inc. | Goliad, TXObrien Ranch (3820) | PluggedGas | 4,800 | Jan 22, 1999 | — | — |
| O Brien-Harkins #842-175-33138 | C & E Operating Inc. | Goliad, TXObrien Ranch (3820) | PluggedGas | 4,800 | Jan 22, 1999 | — | — |
| Barrow Unit #142-071-32052 | C & E Operating Inc. | Chambers, TXWillow Slough (Frio 2) | PluggedOil | 9,500 | Jan 19, 1999 | — | — |
| Thomson-Barrow Corp. #842-025-32789 | C & E Operating Inc. | Bee, TXBurkes Ridge (1600) | PluggedGas | 5,259 | Nov 12, 1998 | — | — |
| O Brien J. M. #342-025-32791 | C & E Operating Inc. | Bee, TXQuincy Ranch (3900) | PluggedGas | 5,000 | Oct 20, 1998 | — | — |
| Wood #142-391-32260 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,200 | Oct 12, 1998 | — | — |
| Schmidt #242-391-32259 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,200 | Oct 9, 1998 | — | — |
| Thomson-Barrow Corp. C #1242-025-32917 | C & E Operating Inc. | Bee, TXLaura Thomson (4700) | PluggedGas | 6,000 | Sep 3, 1998 | — | — |
| O Brien-Harkins a #342-025-32908 | C & E Operating Inc. | Bee, TXBerclair E. (Frio Middle) | PluggedGas | 4,500 | Aug 20, 1998 | — | — |
| Cartwright Trust #342-175-33112 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,500 | Jul 14, 1998 | — | — |
| Allison Guy #142-391-32247 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,300 | Jun 16, 1998 | — | — |
| Swyka #342-391-32245 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,300 | Jun 12, 1998 | — | — |
| Cartwright Trust #142-175-33095 | C & E Operating Inc. | Goliad, TXBerclair E. (Frio Middle) | PluggedGas | 4,300 | Jun 5, 1998 | — | — |
| Swyka #442-391-32242 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,500 | Jun 5, 1998 | — | — |
| Swyka #242-391-32241 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,300 | May 27, 1998 | — | — |
| O Brien-Harkins a #242-025-32893 | C & E Operating Inc. | Bee, TXFive O (Sinton) | PluggedGas | 4,300 | May 12, 1998 | — | — |
| Schmidt #142-391-32238 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,200 | May 5, 1998 | — | — |
| O Brien Harkins a #142-025-32889 | C & E Operating Inc. | Bee, TXBerclair S. (2700) | PluggedGas | 5,000 | Apr 17, 1998 | — | — |
| Swyka #142-391-32234 | C & E Operating Inc. | Refugio, TXPeponi Ranch (Frio 4800) | PluggedGas | 6,050 | Mar 31, 1998 | — | — |
| O Brien-Harkins #642-175-33079 | C & E Operating Inc. | Goliad, TXObrien Ranch (Frio 4650) | PluggedGas | 5,000 | Mar 25, 1998 | — | — |