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Title: Effect of permeability on cooling of a magmatic intrusion in a geothermal reservoir

Abstract

Numerical modeling of the transient cooling of a magmatic intrusion is described in a geothermal reservoir that results from conduction and convection, considering the effects of overlying cap rock and differing horizontal and vertical permeabilities of the reservoir. These results are compared with data from Salton Sea Geothermal Field (SSGF). Multiple layers of convection cells are observed when horizontal permeability is much larger than vertical permeability. The sharp drop-off of surface heat flow experimentally observed at SSGF is consistent with the numerical results. The age of the intrusive body at SSGF is estimated to be between 6000 and 20,000 years.

Authors:
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
7080942
Report Number(s):
UCRL-52888
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
15 GEOTHERMAL ENERGY; HYDROTHERMAL SYSTEMS; INTRUSION; MATHEMATICAL MODELS; RESERVOIR ROCK; PERMEABILITY; BOUNDARY CONDITIONS; CAP ROCK; COMPUTER CODES; COOLING; DIKES; HEAT FLOW; HEAT TRANSFER; MAGMA; MASS TRANSFER; NUMERICAL SOLUTION; PLUTONIC ROCKS; ENERGY TRANSFER; GEOLOGIC STRUCTURES; GEOTHERMAL SYSTEMS; IGNEOUS ROCKS; ROCKS; Geothermal Legacy; 150200* - Geology & Hydrology of Geothermal Systems

Citation Formats

Lau, K H. Effect of permeability on cooling of a magmatic intrusion in a geothermal reservoir. United States: N. p., 1980. Web. doi:10.2172/7080942.
Lau, K H. Effect of permeability on cooling of a magmatic intrusion in a geothermal reservoir. United States. https://doi.org/10.2172/7080942
Lau, K H. 1980. "Effect of permeability on cooling of a magmatic intrusion in a geothermal reservoir". United States. https://doi.org/10.2172/7080942. https://www.osti.gov/servlets/purl/7080942.
@article{osti_7080942,
title = {Effect of permeability on cooling of a magmatic intrusion in a geothermal reservoir},
author = {Lau, K H},
abstractNote = {Numerical modeling of the transient cooling of a magmatic intrusion is described in a geothermal reservoir that results from conduction and convection, considering the effects of overlying cap rock and differing horizontal and vertical permeabilities of the reservoir. These results are compared with data from Salton Sea Geothermal Field (SSGF). Multiple layers of convection cells are observed when horizontal permeability is much larger than vertical permeability. The sharp drop-off of surface heat flow experimentally observed at SSGF is consistent with the numerical results. The age of the intrusive body at SSGF is estimated to be between 6000 and 20,000 years.},
doi = {10.2172/7080942},
url = {https://www.osti.gov/biblio/7080942}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Jan 11 00:00:00 EST 1980},
month = {Fri Jan 11 00:00:00 EST 1980}
}