6
Cumulative Unconventional Gas Production by Region
2003 2025 (Trillion Cubic Feet)
Rocky
Mountains
35
61
1
18
6
1
7
2
36
3
10
8
Midcontinent
Southwest
Gulf Coast
Northeast
Source: Dept. of Energy, Energy Information Administration; Annual Energy Outlook 2005
Unconventional Gas: Challenges, Successes, and Future Outlook, Ted McCallister
Coal Bed Methane
Fractured Shale
Tight Sandstone