Fact sheet · 2003 · 48 citations · 0 references
EngineeringGeologyPetroleum EngineeringPetroleum GeologyReservoir CharacterizationUnconventional ReservoirsExploration GeologyPetroleum GeochemistryPetroleum System AnalysisProspect EvaluationReservoir GeologyResource EstimationNatural GasNatural Gas GeochemistryUnconventional Resource Assessment
Using a geology-based assessment methodology, the U.S. Geological Survey estimated a mean of 70.2 trillion cubic feet of undiscovered natural gas, a mean of 54 million barrels of undiscovered oil, and a mean of 872 million barrels of undiscovered natural gas liquids in the Appalachian Basin Province.