Aquifer thermal energy storage reference manual: seasonal thermal energy storage program Page: 64 of 99
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Investigations of temperature-induced permeability alterations and creep
compaction will provide information for ATES design, operation, and main-
tenance guidelines. Work in FY-1980 involved compiling and reviewing of
literature on temperature- and stress-induced changes in physical and chemical
properties of porous materials, developing of a comprehensive laboratory
experimental strategy, and beginning laboratory experiments on Ottawa sand and
Massillon sandstone (measurement of permeability, compressibility and water
quality under elevated temperature and stress conditions).
The injectivity test apparatus is a mobile field unit designed to permit
pre-operational studies on well injectivity impairment. Membrane filtration
tests, reservoir core flood tests, and laser particle counting comprise the
major components of the test stand. Fluid samples upstream and downstream of
the main heat exchangers are analyzed and a quantitative estimate of injection
well longevity is made. Subsequently, recommendations are given concerning
well backflush programs, filtration and/or chemical additive measures.
Activities for FY-1981 will be to:
. Complete the STES Laboratory Flow Facility construction and installation
. Continue generic investigations of aquifer stability at temperature and
. Begin laboratory studies for Field Test Facilities (FTF) and demonstra-
. Complete the mobile well injectivity test apparatus and test at FTF
Laboratory experiments in support of Field Test Facilities and demonstra-
tion programs will be carried out at PNL and under subcontract. (The labora-
tory-based flow facility and the mobile injectivity test apparatus are being
designed and constructed by Terra Tek, Inc.) Testing of the injectivity
apparatus will be done at the high temperature Field Test Facility.
DATE ISSUED: SUPERSEDES PNL-3471 SECTION 3.6
August 1980 ISSUE DATED: New PAGE 2
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Prater, L.S. Aquifer thermal energy storage reference manual: seasonal thermal energy storage program, report, January 1, 1980; Richland, Washington. (https://digital.library.unt.edu/ark:/67531/metadc1053829/m1/64/: accessed May 21, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.