T193 High-Resolution Geophysical Methods for Hydrogeologic Site Characterization
Wednesday, 31 October 2007
8:00 AM - 12:00 PM
HIGH RESOLUTION RESISTIVITY IMAGING OF FLUID INJECTIONS
Paper number: T193-4
Program: Technical Sessions
Time: 8:50 AM – 9:10 AM
Authors
Abstract
The ability of earth materials to conduct electricity will vary, often significantly, as a result of the injection of fluid. Thus, observing the volumetric variation in resistivity with respect to time results in time sequenced images of the wetting front as it advances through a rock pile or into a geologic formation. In some instances, the hydraulic conductivity can be derived directly from the time series electrical data. The High Resolution Resistivity method (HRRTM)has been successfully adapted to the monitoring of a surfactant flood experiment in an oil field as well as a high pressure injection of a lixiviant into a gold heap leach stack.