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Title: Geothermal energy production with supercritical fluids

Patent ·
OSTI ID:1174650

There has been invented a method for producing geothermal energy using supercritical fluids for creation of the underground reservoir, production of the geothermal energy, and for heat transport. Underground reservoirs are created by pumping a supercritical fluid such as carbon dioxide into a formation to fracture the rock. Once the reservoir is formed, the same supercritical fluid is allowed to heat up and expand, then is pumped out of the reservoir to transfer the heat to a surface power generating plant or other application.

Research Organization:
Univ. of California, Oakland, CA (United States)
Sponsoring Organization:
USDOE
Assignee:
University Of California, The Regents Of
Patent Number(s):
6,668,554
OSTI ID:
1174650
Country of Publication:
United States
Language:
English

References (6)

Analysis of Production Response to CO2/Sand Fracturing: A Case Study conference April 2013
Summary of recent flow testing of the Fenton Hill HDR reservoir report September 1994
Drilling procedures, techniques and test results for a 3.7 km deep, 500°C exploration well, kakkonda, japan journal August 1998
Carbon dioxide-water phase equilibria results from the Wong-Sandler combining rules journal April 1997
Fluid circulation and heat extraction from engineered geothermal reservoirs journal August 1999
CO2 sand fracturing in Devonian shales report December 1993

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15 GEOTHERMAL ENERGY