High-temperature borehole instrumentation

Conference · Thu Dec 31 23:00:00 EST 1981

OSTI ID:5350179

Dennis, B R; Koczan, S; Cruz, J

Research in materials, equipment, and instrument development was required in the Hot Dry Rock Energy Extraction Demonstration at Fenton Hill located in northern New Mexico. The new Phase II Energy Extraction System at the Fenton Hill Test Site will consist of two wellbores drilled to a depth of about 4570 m (15,000 ft) and then connected by a series of hydraulic-induced fractures. The first borehole (EE-2) was completed in May of 1980, at a depth of 4633 m (15,200 ft) of which approximately 3960 m (13,000 ft) is in Precambrian granitic rock. Starting at a depth of approximately 2930 m (9600 ft), the borehole was inclined up to 35/sup 0/ from vertical. Bottom-hole temperature in EE-2 is 317/sup 0/C. The EE-3 borehole was then drilled to a depth of 4236 m (13,900 ft). Its inclined part is positioned directly over the EE-2 wellbore with a vertical separation of about 450 m (1500 ft) between them. The materials development programs cover all aspects of geothermal energy extraction. Research on drilling, hydraulic fracturing, and wellbore logging were necessary to determine the technical and economic feasibility of the hot dry rock concepts.

• Research Organization: Los Alamos National Lab., NM (USA)
• DOE Contract Number: W-7405-ENG-36
• OSTI ID: 5350179
• Report Number(s): LA-UR-82-1254; CONF-820564-1; ON: DE82015770
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150303* -- Geothermal Exploration & Exploration Technology-- Exploratory Drilling & Well Logging
BOREHOLES
CAVITIES
COMMINUTION
ENERGY SYSTEMS
EQUIPMENT
FRACTURING
GEOTHERMAL SYSTEMS
GEOTHERMAL WELLS
GRANITES
Geothermal Legacy
HEAT EXTRACTION
HOT-DRY-ROCK SYSTEMS
HYDRAULIC FRACTURING
IGNEOUS ROCKS
LABORATORY EQUIPMENT
MATERIALS
MEASURING INSTRUMENTS
PLUTONIC ROCKS
PROBES
ROCKS
SAMPLERS
SEALS
THERMAL INSULATION
TRANSDUCERS
WELL LOGGING
WELL LOGGING EQUIPMENT
WELLS