Gas Drilling Summary
| Development Wells | ||||||||||
| 1999 | 1998 | 1997 | 1996 | 1995 | 1994 | 1993 | 1992 | 1991 | 1990 | |
| Coalbed Methane | ||||||||||
| Drilled | 277 | 242 | 269 | 156 | 77 | 103 | 86 | 43 | 108 | 59 |
| Completed | 284 | 240 | 220 | 175 | 68 | 97 | 132 | 176 | 29 | 59 |
| Conventional Gas | ||||||||||
| Drilled | 32 | 29 | 14 | 17 | 15 | 41 | 57 | 41 | 34 | 49 |
| Completed | 29 | 29 | 11 | 16 | 13 | 49 | 61 | 40 | 30 | 47 |
| Dual Completion | ||||||||||
| Drilled | 1 | 4 | 7 | - | - | - | - | - | - | - |
| Completed | 1 | 4 | 5 | - | - | - | - | - | - | - |
| Exploratory Wells | ||||||||||
| Coalbed Methane | ||||||||||
| Drilled | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 2 | 7 |
| Completed | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 |
| Conventional Gas | ||||||||||
| Drilled | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 2 | 1 | 4 |
| Completed | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
| Dual Completion | ||||||||||
| Drilled | 0 | 0 | 0 | - | - | - | - | - | - | - |
| Completed | 0 | 0 | 0 | - | - | - | - | - | - | - |