Geothermal Injection Monitoring Project. Phase I status report, April 1981-April 1982
The feasibility of using remote geophysical techniques to monitor the movement of injected brine has been evaluated. It was established that no single approach is likely to be identified that can be used to accurately monitor the precise location of the injected fluid. Several approaches have been considered in parallel because they add new dimensions to the existing monitoring capabilities, and are likely to cover a range of applications at a variety of geothermal sites. These include: microseismicity - a seismic net is used to record small magnitude events associated with injection; streaming potential - self potential anomalies produced by a moving fluid identify fluid flow direction; cross borehole geotomography - two-dimensional image of flow pathways is constructed using electromagnetic waves; and well pressure response to solid earth tide - changes in pore pressures are used to discriminate fracture/pore porosity and estimate fracture orientations.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 5119085
- Report Number(s):
- UCID-19497; ON: DE82021949
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
BRINES
MONITORING
REINJECTION
GEOTHERMAL FLUIDS
FLUID INJECTION
FRACTURES
POROSITY
RESISTIVITY SURVEYS
SEISMICITY
SELF-POTENTIAL SURVEYS
TOMOGRAPHY
WELL PRESSURE
DIAGNOSTIC TECHNIQUES
ELECTRICAL SURVEYS
FAILURES
FLUIDS
GEOPHYSICAL SURVEYS
RESERVOIR PRESSURE
SURVEYS
Geothermal Legacy
150600* - Geothermal Energy- Environmental Aspects