Evaluation of the second hot dry rock geothermal energy reservoir: results of Phase I, Run Segment 5
The results of a long-term (286 day) flow test of the second hot dry rock reservoir at the Fenton Hill field site are presented. This second reservoir was created by fracturing an interval of granitic rock located at a depth of 2.93 km (9620 ft) in the same wellbore pair used in the creation of the first, smaller reservoir. The new fracture system has a vertical extent of at least 320 m (1050 ft), suggesting that the combined heat-transfer area of the old and new fracture systems is much greater than that of the old system. The virgin rock temperature at the bottom of the deeper interval was 197/sup 0/C (386/sup 0/F). Downhole measurements of the water temperature at the reservoir outlet, as well as temperatures inferred from geothermometry, showed that the thermal drawdown of the reservoir was about 8/sup 0/C, and preliminary estimates indicate that the minimum effective heat-transfer area of the new reservoir is 45,000 m/sup 2/ (480,000 ft/sup 2/), which is six times larger than the first reservoir.
- Research Organization:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5984399
- Report Number(s):
- LA-8940-HDR; ON: DE82002520
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GEOTHERMAL WELLS
TESTING
HOT-DRY-ROCK SYSTEMS
FLUID FLOW
DATA ACQUISITION
DRAWDOWN
FLOW MODELS
FLOW RATE
FLUID INJECTION
FRACTURE PROPERTIES
FRACTURED RESERVOIRS
GEOCHEMISTRY
GEOLOGIC MODELS
GEOTHERMOMETRY
HEAT TRANSFER
LOSSES
MAPPING
NEW MEXICO
RESERVOIR ENGINEERING
SEISMICITY
TRACER TECHNIQUES
WATER
CHEMISTRY
ENERGY SYSTEMS
ENERGY TRANSFER
ENGINEERING
GEOTHERMAL SYSTEMS
HYDROGEN COMPOUNDS
ISOTOPE APPLICATIONS
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NORTH AMERICA
OXYGEN COMPOUNDS
SOUTHWEST REGION
USA
WELLS
Geothermal Legacy
150904* - Geothermal Engineering- Geothermal Reservoir & Well Performance