Reservoir-Scale Fracture Permeability in the Dixie Valley, Nevada, Geothermal Field

Jump to: navigation, search


OpenEI Reference LibraryAdd to library

Conference Paper: Reservoir-Scale Fracture Permeability in the Dixie Valley, Nevada, Geothermal Field

Abstract
Borehole televiewer, temperature, and flowmeter datarecorded in six wells penetrating a geothermalreservoir associated with the Stillwater fault zone inDixie Valley, Nevada, were used to investigate therelationship between reservoir permeability and thecontemporary in situ stress field. Data from wellsdrilled into productive and nonproductive segments ofthe Stillwater fault zone indicate that permeability inall wells is dominated by a relatively small number offractures striking parallel to the local trend of thefault. However, Coulomb failure analysis using ourfracture orientations in conjunction with stressorientations and magnitudes determined by Hickmanet al. (this volume) suggests that fault zonepermeability is high only when individual fractures aswell as the overall Stillwater fault zone are optimallyoriented and critically stressed for frictional failure.Fracture geometry may also play a significant role indetermining reservoir productivity. The welldevelopedpopulations of low-angle fractures presentin wells drilled into the producing segment of thefault are not present within the relativelyimpermeable segment of the Stillwater fault zone.

Authors 
Colleen A. Barton, S. H. Hickman, Roger Morin, Mark D. Zoback and Dick Benoit






Conference 
PROCEEDINGS, Twenty-Third Workshop on Geothermal Reservoir Engineering Stanford University; Stanford University; 1998


Published 
PROCEEDINGS, Twenty-Third Workshop on Geothermal Reservoir Engineering Stanford University;, 1998





DOI 
Not Provided
Check for DOI availability: http://crossref.org


Online 
Internet link for Reservoir-Scale Fracture Permeability in the Dixie Valley, Nevada, Geothermal Field

Citation

Colleen A. Barton,S. H. Hickman,Roger Morin,Mark D. Zoback,Dick Benoit. 1998. Reservoir-Scale Fracture Permeability in the Dixie Valley, Nevada, Geothermal Field. In: PROCEEDINGS, Twenty-Third Workshop on Geothermal Reservoir Engineering Stanford University. PROCEEDINGS, Twenty-Third Workshop on Geothermal Reservoir Engineering Stanford University; 1998; Stanford University. Stanford University: (!) ; p. (!)


Related Geothermal Exploration Activities
Activities (1)


Areas (1)
  1. Dixie Valley Geothermal Area
Regions (0)