Borehole Electromagnetics (EM) and Superconducting Quantum Interference Device (SQUID)

BRG are experienced at executing borehole EM surveys to help locate conductive zones and model location and distance to desired targets.  In this technique a surface current loop is used to induce an EM field in the subsurface, the response to which is measured in the desired drillhole.  However, in situations where targets are deep, very conductive, or under a conductive overburden, BRG rely on sensitive SQUIDs to produce more accurate models and data interpretation.  SQUIDs are small sensors that exploit the quantum-mechanical decay effects of electron systems subjected to an electromagnetic field – SQUIDs detect the decaying magnetic field produced and provide more accurate data that facilitates more definitive evaluation of the relevant conducting material.