GEOTHERMAL TECHNOLOGIES LEGACY COLLECTION - Bibliographic Citation


Bibliographic Citation


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Title: Evaluation of the Susanville California geothermal resource
Creator/Author: Benson, S. ; Goranson, C. ; Noble, J. ; Schroeder, R. ; Corrigan, D. ; Wollenberg, H.
Publication Date:1980 Jun 01
OSTI Identifier:OSTI 6743742
Report Number(s):LBL-11187
DOE Contract Number:W-7405-ENG-48
Document Type:Technical Report
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Other Number(s):
Research Org:California Univ., Berkeley (USA). Lawrence Berkeley Lab.
Sponsoring Org:Not Available
Subject:15 GEOTHERMAL ENERGY; CALIFORNIA; GEOTHERMAL EXPLORATION; GEOTHERMAL WELLS; WELL LOGGING; DATA ANALYSIS; DRAWDOWN; EXPLORATORY WELLS; GEOLOGICAL SURVEYS; GEOTHERMAL GRADIENTS; GEOTHERMAL RESOURCES; LITHOLOGY; MAPS; PETROLOGY; RESOURCE ASSESSMENT; TEMPERATURE DISTRIBUTION; WELL COMPLETION; EXPLORATION; GEOLOGY; NORTH AMERICA; RESOURCES; SURVEYS; TEMPERATURE GRADIENTS; USA; WELLS; WESTERN REGION
Keywords:Geothermal Legacy
Description/Abstract:Twelve exploratory temperature gradient holes have been drilled (bringing the total number of old and new holes and wells to 23), subsurface geologic and geophysical data have been analyzed, and a well test has been conducted. Interpretation of data obtained from well testing, drillers' and lithologic logs and geophysical surveys suggests the presence of a fault-related reservoir of high permeability, shallow depth, limited thickness and limited lateral extent. Temperature contours and profiles suggest the upwelling of fluids on a northwest-trending fault, from where they are dispersed into the reservoir along a highly permeable, fractured agglomerate-basalt interface and fractured volcanic units. Well tests show a high lateral permeability associated with the fractured interface, and porosity values are low, supporting evidence for a fracture-dominated producing aquifer(s). The areal confinement of the anomaly has been established on three sides (west, south, east) to a depth of 200 m. In the southern portion, temperature reversals below an aglomerate-basaltic interface suggest a vertically confined aquifer. Water samples and petrologic data indicate that in the past, fluids of temperatures between 70/sup 0/C and 150/sup 0/C flowed through the fracture system. Computer modeling indicates that a horizontal, regional flow of hot fluids is required to match the observed temprature distribution.
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Country of Publication:US
Language:English
Size/Format:Medium: ED; Size: Pages: 105
Rights:
Availability:NTIS, PC A06/MF A01.
System Entry Date:2013 Apr 15
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