Status and prospects for Hot Dry Rock (HDR) in the US
Abstract
The vast majority of accessible geothermal energy exists in the form of heat stored in dry rock at depth. For nearly the last two decades, the Los Alamos National Laboratory has been engaged in a program to develop the technology to mine the thermal energy in this hot dry rock (HDR). The world's first heat mine was developed and operated at Fenton Hill, NM in the 1970's by using drilling and hydraulic fracturing techniques to create an artificial reservoir in hot rock and subsequently circulating water through this reservoir to mine the heat from the rock. Over the last ten years, a much larger, deeper, and hotter heat mine has been constructed at Fenton Hill and a permanent energy extraction plant has been built on the surface. A long-term testing program has recently begun to evaluate the potential for sustained energy extraction from the large Fenton Hill heat mine. This paper summarizes the history of HDR research and development at Los Alamos, reports the initial results of the long-term testing program at Fenton Hill, and discusses the possible future course of HDR technology.
- Publication:
-
Presented at the Geothermal Resources Council Meeting
- Pub Date:
- 1992
- Bibcode:
- 1992grc..meet....4B
- Keywords:
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- Dry Heat;
- Geothermal Energy Utilization;
- Geothermal Resources;
- Geothermal Technology;
- Evaluation;
- Fluid Injection;
- Heat Transmission;
- Rocks;
- Energy Production and Conversion