Analyses of fracturing and thermal performance of fractured reservoirs in engineered geothermal system (EGS) are extended from a depth of 5 km to 10 km, and models for flow and heat transfer in EGS are improved. Effects of the geofluid flow direction choice, distance between fractures, fracture width, permeability, radius, and number of fractures, on reservoir heat drawdown time are computed. The number of fractures and fracture radius for desired reservoir thermal drawdown rates are recommended. A simplified model for reservoir hydraulic fracturing energy consumption is developed, indicating it to be 51.8–99.6 MJ per m3 fracture for depths of 5–10 km.
Analysis of Hydraulic Fracturing and Reservoir Performance in Enhanced Geothermal Systems
and Applied Mechanics,
Contributed by the Advanced Energy Systems Division of ASME for publication in the JOURNAL OF ENERGY RESOURCES TECHNOLOGY. Manuscript received February 9, 2015; final manuscript received February 25, 2015; published online April 22, 2015. Editor: Hameed Metghalchi.
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Li, M., and Lior, N. (July 1, 2015). "Analysis of Hydraulic Fracturing and Reservoir Performance in Enhanced Geothermal Systems." ASME. J. Energy Resour. Technol. July 2015; 137(4): 041203. https://doi.org/10.1115/1.4030111
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