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Case History of Assessment, Development and Utilization

Abstract

Klamath Falls, Oregon, is located in a Known Geothermal Resource Area (KGRA) which has been used by residents, principally to obtain geothermal fluids for space heating, at least since the turn of the century. Over 500 shallow-depth wells ranging from 90 to 2,000 ft (27 to 610 m) in depth are used to heat (35 MWt) over 600 structures. This utilization includes the heating of homes, apartments, schools, commercial buildings, hospital, county jail, YMCA, and swimming pools by individual wells and three district heating systems. Geothermal well temperatures range from 100 to 230oF (38 to 110oC) and the most common practice is to use downhole heat exchangers with city water as the circulating fluid. Larger facilities and district heating systems use lineshaft vertical turbine pumps and plate heat exchangers. Well water chemistry indicates approximately 800 ppm dissolved solids, with sodium sulfate having the highest concentration. Some scaling and corrosion does occur on the downhole heat exchangers (black iron pipe) and on heating systems where the geo-fluid is used directly. The development of the city district heating system in 1981, resulted in perhaps the most extensive and, in some ways, the most complete aquifer tests ever conducted in the United States. Hundreds of private well owners using downhole heat exchangers were concerned that pumping the  More>>
Publication Date:
Sep 01, 1989
Product Type:
Conference
Resource Relation:
Conference: Geothermal Resources Council, 1989 Annual Meeting, Santa Rosa, CA
Subject:
15 GEOTHERMAL ENERGY; Geothermal Legacy
Sponsoring Organizations:
USDOE
OSTI ID:
894594
Research Organizations:
OIT Geo-Heat Center
Country of Origin:
United States
Language:
English
Announcement Date:
Nov 07, 2006

Citation Formats

Lienau, Paul J, Culver, Gene, and Lund, John W. Case History of Assessment, Development and Utilization. United States: N. p., 1989. Web.
Lienau, Paul J, Culver, Gene, & Lund, John W. Case History of Assessment, Development and Utilization. United States.
Lienau, Paul J, Culver, Gene, and Lund, John W. 1989. "Case History of Assessment, Development and Utilization." United States.
@misc{etde_894594,
title = {Case History of Assessment, Development and Utilization}
author = {Lienau, Paul J, Culver, Gene, and Lund, John W}
abstractNote = {Klamath Falls, Oregon, is located in a Known Geothermal Resource Area (KGRA) which has been used by residents, principally to obtain geothermal fluids for space heating, at least since the turn of the century. Over 500 shallow-depth wells ranging from 90 to 2,000 ft (27 to 610 m) in depth are used to heat (35 MWt) over 600 structures. This utilization includes the heating of homes, apartments, schools, commercial buildings, hospital, county jail, YMCA, and swimming pools by individual wells and three district heating systems. Geothermal well temperatures range from 100 to 230oF (38 to 110oC) and the most common practice is to use downhole heat exchangers with city water as the circulating fluid. Larger facilities and district heating systems use lineshaft vertical turbine pumps and plate heat exchangers. Well water chemistry indicates approximately 800 ppm dissolved solids, with sodium sulfate having the highest concentration. Some scaling and corrosion does occur on the downhole heat exchangers (black iron pipe) and on heating systems where the geo-fluid is used directly. The development of the city district heating system in 1981, resulted in perhaps the most extensive and, in some ways, the most complete aquifer tests ever conducted in the United States. Hundreds of private well owners using downhole heat exchangers were concerned that pumping the reservoir would impact the performance of their wells. The geological setting, historical development, and reservoir testing that led up to this major aquifer stress test in 1983 are presented. The institutional and legal problems that resulted in the establishment of a city ordinance controlling the use of the resource and a Geothermal Advisory Committee to oversee future utilization and development are also discussed.}
journal type = {FT}
place = {United States}
year = {1989}
month = {Sep}
}