Table R5.11      Ultimate CBM gas in-place
Area  1012 m3 Tcfa
Upper Cretaceous/Tertiary—Plains 4.16 148
Mannville coals—Plains 9.06 321
Foothills/Mountains 0.88 31
Total 14.10 500
Source: EUB/AGS Earth Sciences Report 2003-03.
a Tcf – trillion cubic feet.