Determination of permeability of granitic rocks in GT-2 from hydraulic fracturing data
The Los Alamos Scientific Laboratory is currently conducting a study to determine the feasibility to extract geothermal energy from dry hot rock. The investigated concept calls for the creation of a hydraulic fracture in hot, impermeable rock. Heat will be exchanged subsequently at the fracture surface between the rock and a circulating fluid. The successful creation of hydraulic fractures in the granitic section of exploratory holes GT-1 and GT-2 yielded sufficient data to calculate the average permeability of the rock next to a fracture by means of the mathematical model. The calculated permeabilities were found to be in the microdarcy range and proved the granitic rock penetrated by GT-1 and GT-2 to be sufficiently impermeable to test the above concept. (auth)
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7200324
- Report Number(s):
- LA-6169-MS
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GRANITES
PERMEABILITY
HOT-DRY-ROCK SYSTEMS
HYDRAULIC FRACTURING
HEAT EXTRACTION
MATHEMATICAL MODELS
COMMINUTION
FRACTURING
GEOTHERMAL SYSTEMS
IGNEOUS ROCKS
ROCKS
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