Hot dry rock geothermal energy development program. Annual report, fiscal year 1980

Technical Report · Wed Jul 01 00:00:00 EDT 1981

DOI:https://doi.org/10.2172/6073244· OSTI ID:6073244

Cremer, G M ^[1]

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1. comp.

Investigation and flow testing of the enlarged Phase I heat-extraction system at Fenton Hill continued throughout FY80. Temperature drawdown observed at that time indicated an effective fracture of approximately 40,000 to 60,000 m/sup 2/. In May 1980, hot dry rock (HDR) technology was used to produce electricity in an interface demonstration experiment at Fenton Hill. A 60-kVA binary-cycle electrical generator was installed in the Phase I surface system and heat from about 3 kg/s of geothermal fluid at 132/sup 0/C was used to boil Freon R-114, whose vapor drove a turboalternator. A Phase II system was designed and is now being constructed at Fenton Hill that should approach commercial requirements. Borehole EE-2, the injection well, was completed on May 12, 1980. It was drilled to a vertical depth of about 4500 m, where the rock temperature is approximately 320/sup 0/C. The production well, EE-3 had been drilled to a depth of 3044 m and drilling was continuing. Environmental monitoring of Fenton Hill site continued. Development of equipment, instruments, and materials for technical support at Fenton Hill continued during FY80. Several kinds of models were also developed to understand the behavior of the Phase I system and to develop a predictive capability for future systems. Data from extensive resource investigations were collected, analyzed, and assembled into a geothermal gradient map of the US, and studies were completed on five specific areas as possible locations for HDR Experimental Site 2.

• Research Organization: Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 6073244
• Report Number(s): LA-8855-HDR; ON: DE81028517
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
HOT-DRY-ROCK SYSTEMS
HEAT EXTRACTION
RESEARCH PROGRAMS
WELL DRILLING
BINARY-FLUID SYSTEMS
DEMONSTRATION PLANTS
FREONS
GEOCHEMISTRY
GEOTHERMAL FLUIDS
GEOTHERMAL GRADIENTS
GEOTHERMAL POWER PLANTS
GEOTHERMAL WELLS
GEOTHERMOMETERS
INJECTION WELLS
POWER GENERATION
RESERVOIR ENGINEERING
WELL COMPLETION
CHEMISTRY
DRILLING
ENERGY SYSTEMS
ENGINEERING
FLUIDS
GEOTHERMAL SYSTEMS
HALOGENATED ALIPHATIC HYDROCARBONS
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POWER PLANTS
TEMPERATURE GRADIENTS
THERMAL POWER PLANTS
THERMOMETERS
WELLS
Geothermal Legacy
150906* - Geothermal Engineering- Reservoir Stimulation & Extraction Technology