Table C7. Assumed Lower 48 Unconventional Gas Resource Base as of January 1, 1998

Table C7. Assumed Lower 48 Unconventional Gas
Resource Base as of January 1, 1998
(Trillion Cubic Feet)

Resource	NPC Study (Current Technology Resource Base)	EIA AEO2000 Resource Base	EIA Study Updated Resource Base
Tight Gas	178	271	286
Coalbed Methane	59	55	62
Gas Shales	39	52	55
Subtotal	286	378	403
Growth of Tight Gas/Other Fields	98	^a—	^a—
Total	384	378	403
^aIncluded in EIA resource values for tight gas, coalbed methane, and gas shales. Sources: National Petroleum Council, Natural Gas: Meeting the Challenges of the Nation’s Growing Natural Gas Demand (Washington, DC, December 1999); Energy Information Administration, Annual Energy Outlook 2000, DOE/EIA-0383(2000) (Washington, DC, December 1999); and Energy Information Administration, Office of Integrated Analysis and Forecasting, National Energy Modeling System runs OGBASE.D051200A and OGDEPL.D051200A.