An electrical survey of a well's borehole before it is cased, which reflects the degree of resistance of the rock strata to electric current. From the results of the survey, geologists are able to determine the nature of the rock penetrated by the drill and some indication of its permeability.
a record of certain electrical characteristics of formations traversed by the borehole, made to identify the formations, determine the nature and amount of fluids they contain, and estimate their depth. It is also called an electric log or electric survey.
