Monitoring artificially stimulated fluid movement in the Cretaceous Dakota aquifer,western Kansas |
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| Authors: | Allen P Macfarlane Andrea Förster Daniel F Merriam Jörg Schrötter John M Healey |
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| Institution: | (1) Kansas Geological Survey, University of Kansas, 1930 Constant Avenue, Campus West, Lawrence, KS 66047, USA,;(2) GeoForschungsZentrum Potsdam, Telegrafenberg, 14473 Potsdam, Germany, |
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| Abstract: | Aquifer properties can be evaluated by monitoring artificially stimulated fluid movements between wells, if the fluid is
heated. Changes in the temperature profile recorded in observation wells indicate the flow path of the heated fluid, which
in effect acts as a tracer. A fluid-flow experiment in the Cretaceous Dakota Formation at the Hodgeman County site, west-central
Kansas, demonstrated the advantage of using the distributed optical-fiber temperature sensing method for monitoring transient
temperature conditions in this hydrological application. The fluid flow in the aquifer was increased by producing water from
a pumping well and injecting heated water in an injection well 13 m (43 ft) distant from the pumping well. The time-temperature
series data obtained and compared with results from previous pumping tests point to interwell heterogeneity of the aquifer
and to a zone in the sandstone aquifer of high hydraulic conductivity. However, the experiment would have allowed further
clarification of aquifer heterogeneity and thermal properties if at least one observation well had been present between the
injection and production wells.
Electronic Publication |
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| Keywords: | North American Midcontinent Groundwater flow Hydraulic testing Tracer tests Thermal conditions Equipment/field techniques |
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