Electrical resistivity (ER) testing is an effective geophysical method to identify subsurface geologic hazards, stratigraphic variability, karst features, and hydrogeologic conditions. A typical single ER test utilizes an array of electrodes placed in a straight line at a consistent spacing across a target area. This … [Read more...]
Oil Field Hazard Characterization
Pyramid Geophysical Services was contracted to perform an electrical resistivity (ER) survey on several current and proposed well drilling sites in Oklahoma. The purpose of the survey was to identify subsurface voids and depth to bedrock at the drilling sites, which are prone to karst formation. In karst conditions, … [Read more...]
