Downhole Radar System for Fracture Detection

摘要

A borehole radar prototype was designed based on theoretical considerations. Experiments were conducted at a granite quarry where an existing flame-cut slot was used to simulate a fracture. The radar returns from this simulated fracture were detectable in boreholes located at distances of up to 12 meters from the fracture. Engineering design for a downhole radar system is almost complete. This system, including the directional antennas, is fabricated into a tool to be used in a borehole. (ERA citation 11:048325)