
%0 Journal Article
%A Singer, B. Sh. 
%A Dodds, K. 
%T Monitoring Electrical Properties of Rocks in Target Zone of CO2-Sequestration Site
%J ASEG Extended Abstracts
%D 2004/03/01
%V 2004
%N 1
%P 1-4
%K 
%R https://doi.org/10.1071/ASEG2004AB134
%U https://www.publish.csiro.au/paper/ASEG2004AB134 
%X We address evaluation of resistivity of a target zone of a CO2-sequestration site using a simple measurement made from inside metal-cased boreholes. An approximate analytic expression is derived for the admittance measured between two metal casings in a stratified formation. It is shown that in a highly conductive environment measurement electrodes should be positioned inside the target depth range. Charts and plots are produced for evaluation of the admittance as function of the inter-casing separation and gas saturation in the target layer. The results indicate the possibility of monitoring the target zone using metal-cased borehole separated by distances of several hundreds meters. 
