Hot dry rock geothermal reservoir testing: 1978 to 1980

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Description

Experimental results and re-evaluation of the Phase I Hot Dry Rock Geothermal Energy reservoirs at the Fenton Hill field site are summarized. This report traces reservoir growth as demonstrated during Run Segments 2 through 5 (January 1978 to December 1980). Reservoir growth was caused not only by pressurization and hydraulic fracturing, but also by heat extraction and thermal contraction effects. Reservoir heat-transfer area grew from 8000 to 50,000 m/sup 2/ and reservoir fracture volume grew from 11 to 266 m/sup 3/. Despite this reservoir growth, the water loss rate increased only 30%, under similar pressure environments. For comparable temperature and ... continued below

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Pages: 64

Creation Information

Dash, Z.V.; Murphy, H.D. & Cremer, G.M. (eds.) November 1, 1981.

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Description

Experimental results and re-evaluation of the Phase I Hot Dry Rock Geothermal Energy reservoirs at the Fenton Hill field site are summarized. This report traces reservoir growth as demonstrated during Run Segments 2 through 5 (January 1978 to December 1980). Reservoir growth was caused not only by pressurization and hydraulic fracturing, but also by heat extraction and thermal contraction effects. Reservoir heat-transfer area grew from 8000 to 50,000 m/sup 2/ and reservoir fracture volume grew from 11 to 266 m/sup 3/. Despite this reservoir growth, the water loss rate increased only 30%, under similar pressure environments. For comparable temperature and pressure conditions, the flow impedance (a measure of the resistance to circulation of water through the reservoir) remained essentially unchanged, and if reproduced in the Phase II reservoir under development, could result in self pumping. Geochemical and seismic hazards have been nonexistent in the Phase I reservoirs. The produced water is relatively low in total dissolved solids and shows little tendency for corrosion or scaling. The largest microearthquake associated with heat extraction measures less than -1 on the extrapolated Richter scale.

Physical Description

Pages: 64

Notes

NTIS, PC A04/MF A01.

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  • Other: DE82010023
  • Report No.: LA-9080-SR
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/5347800 | External Link
  • Office of Scientific & Technical Information Report Number: 5347800
  • Archival Resource Key: ark:/67531/metadc1074445

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • November 1, 1981

Added to The UNT Digital Library

  • Feb. 4, 2018, 10:51 a.m.

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  • May 22, 2018, 6:46 p.m.

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Dash, Z.V.; Murphy, H.D. & Cremer, G.M. (eds.). Hot dry rock geothermal reservoir testing: 1978 to 1980, report, November 1, 1981; New Mexico. (digital.library.unt.edu/ark:/67531/metadc1074445/: accessed October 20, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.