Development of high-temperature acoustic instrumentation for characterization of hydraulic fractures in dry hot rock. [Downhole geophone sonde]
The primary objectives of the post hydraulic fracture experiments in Geothermal Test Hole No. 2 are to study methods of measuring the location, orientation, and shape of the crack and to determine the stability of pressurized fracture systems. Detection of fracture dimensions and orientation of the geothermal reservoir is important for creating and understanding the operation of a dry hot rock energy-extraction system. These objectives require development of downhole instrumentation capable of characterization of hydraulic-fracture systems in high-temperature and high-pressure borehole environments. The development of the downhole instrumentation must emphasize reliability of measuring devices and electromechanical components to function properly at borehole temperatures of 250/sup 0/C and pressures of 690 bars (10,000 psi).
- Research Organization:
- Los Alamos Scientific Lab., N.Mex. (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 7196160
- Report Number(s):
- LA-UR-76-493; CONF-760513-2
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
150906* -- Geothermal Engineering-- Reservoir Stimulation & Extraction Technology
440400 -- Well Logging Instrumentation
47 OTHER INSTRUMENTATION
BOREHOLES
CAVITIES
COMMINUTION
DESIGN
EQUIPMENT
FAILURES
FRACTURES
FRACTURING
GEOTHERMAL SYSTEMS
Geothermal Legacy
HIGH TEMPERATURE
HOT-DRY-ROCK SYSTEMS
HYDRAULIC FRACTURING
SONIC LOGGING
WELL LOGGING