Instrumentation for granite test No. 1
From 20th international instrumentation symposium; Albuquerque, New Mexico, USA (21 May 1974). Initial measurements to evaluate the feasibility of extracting energy from hot-dry rock in Precambrian basement (granite) employing hydraulic-fracturing techniques were explored in the LASL Granite Test Hole No. 1. Following a series of hydrology experiments in the 785-m (2575 ft) depth hole, preparations were made to instrument a series of hole-pressurization and hydraulicfracturing experiments. The instrumentation was designed to measure breakdown pressure, crack-extension pressure, and shut-in pressure for each fracture and to determine principle tectonic stresses, breakdown stress for hydraulic fracturing, and leak-off rate for fracturing fluid. (auth)
- Research Organization:
- Los Alamos Scientific Lab., N.Mex. (USA)
- NSA Number:
- NSA-29-031465
- OSTI ID:
- 4306576
- Report Number(s):
- LA-UR--74-503; CONF-740504--2
- Country of Publication:
- United States
- Language:
- English
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