Types of Fractured Reservoirs
Type 1 - Fractures provide all reservoir storage, matrix tight. Fractures provide porosity and permeability. Ex. Antrim Shale
Type 2 - Fractures connect porous and permeable matrix zones. Most reservoir storage and porosity in matrix. Permeability enhanced by fractures. Ex. Niagaran Reef
Type 3 - Fractures initiate porosity/permeability in tight rock. Later solution enhancement creates reservoir quality. Ex. Albion-Scipio Field Trenton