Magnetic Transducer Using Hybrid Magnetic Matrix Core for Downhole Measurement Applications

Abstract

The present disclosure relates to embodiments of a device and method for inspecting and detecting characteristics of tubing and devices attached to tubing. More particularly, embodiments of a device and method are disclosed for inspecting a number of tube walls surrounding an innermost tube wall. In embodiments, an inspection device may induce an eddy current in surrounding tube walls by producing an electromagnetic field, wherein the induced eddy current may be recorded and analyzed for aberrations. Eddy currents may be produced by a sensor array comprising a hybrid magnetic matrix core capable of inducing an electromagnetic field at a high saturation point while maintaining good linearity. The eddy current decay and diffusion in the tube walls may be recorded, specifically recording voltage in embodiments, which may produce a function of the tube thickness and electromagnetic properties (e.g. metal conductivity and magnetic permeability) and the configurations of tubes.

Dependencies are inferred from the claim text.