With resistivity logs acknowledged as the foundation of most water, geotechnical and environmental logging, Delta Epsilon has incorporated 16” and 64” normal resistivity log measurements in a manner that does not require an isolation bridle. The GE-9409 combination gamma and electric logging tool simultaneously runs gamma, single point resistance (SPR) and spontaneous potential (SP) logs on standard lightweight single conductor logging cable.
Despite the use of single conductor cable, Delta Epsilon electric logging tools are able to obtain directly measured SP logs in a well-proven manner. This is accomplished by completely eliminating influences induced by the necessity of sending power down hole and multiplexing. Delta Epsilon uses the cable only as a conductor to surface electrodes for this measurement.