Description: During injection, a pressure front, fluid front, and thermal front are formed, and move away from the injection well. The performance of a geothermal field is determined by the movement of these fronts through it. The Brine Injection Technology Program is developing modeling and measurement techniques to help industry determine where these fronts are and to predict their evolution. Because these fronts change the physical properties of the reservoir medium as they pass, Lawrence Livermore National Laboratory is studying the application of geophysical methods to provide information about the location of fronts away from observation and sampling wells. The ultimate purpose is to model the behavior of the field and predict its performance. In FY86, we concentrated on collecting microseismicity and electrical self potential data before and after the start-up of a moderate sized geothermal plant. In FY 87, we will complete the analysis of these data sets, and continue collecting case history information.
Date: April 1, 1987
Creator: Kasameyer, P.W.
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