static temperature profiles

Assessing the Rye Patch Geothermal Field, a Classic Basin-and-Range Resource

Basic Information
Author: 
Sanyal, S.K.
Author: 
McNitt, J.R.
Author: 
Butler, S.J.
Author: 
Klein, C.W.
Author: 
Ellis, R.E.
Description: 
The Rye Patch geothermal field is a classic Basin-and-Range resource with a "blind" anomaly, moderate temperature and "deep circulation" as the source of heat. This paper presents a conceptual model of the field based on lithologic, geophysical and temperature logs as well as production, injection and pressure interference data from 8 deep wells drilled to date. For the hottest well in the field (405°F), we have conducted well bore heat transfer modeling to resolve a major observed discrepancy between the flowing and static temperature profiles, the latter being shown to be affected by downflow of cooler water. The conceptual model has been developed to fit all available resource information, and had been used to estimate reserves: a minimum of 36 M Wand a most-likely level of 64 MW for a 20-year project life. Based on well test data, the maximum gross power production capacity from the existing wells is estimated at 21 MW. The existing wells are capable of supplying the 12.5 MW plant installed at the site if one or two additional wells are drilled for injection.
Publication Date: 
Sunday, January 1, 2006
Resource Language: 
English
Intelectual Originator Contact
Organization Name: 
GeothermEx, Inc.
Street Address: 
3260 Blume Drive,Suite 220
City: 
Richmond
State/Province: 
CA
Postal Code: 
94806
Country: 
United States
Phone: 
510-527-9876
Fax: 
510-527-8164
Resource Information
Access Statement: 
Abstract available online at http://www.geothermex.com/files/Sanyal_2006-2.pdf For a copy of this paper please e-mail us at mw@geothermex.com
Resource Distribution Contact
Organization Name: 
GeothermEx, Inc.
Street Address: 
3260 Blume Drive,Suite 220
City: 
Richmond
State/Province: 
CA
Postal Code: 
94806
Country: 
United States
Phone: 
510-527-9876
Fax: 
510-527-8164
Geographic Extent
North bounding latitude: 
41.7737
South bounding latitude: 
39.8279
West bounding longitude: 
-119.927
East bounding longitude: 
-117.026
Previous Citation
Bibliographic Citation: 
Sanyal, S.K., McNitt, J.R., Butler, S.J., Klein, C.W., and Ellis, R.E., 2006.Assessing the Rye Patch Geothermal Field, a Classic Basin-and-Range Resource. GeothermEx, Inc., Richmond, California.Presco Energy, Englewood, Colorado
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