HIGH-RESOLUTION REMOTE-FIELD EDDY CURRENT CHARACTERIZATION OF PIPES

摘要

In pipe characterization based on the remote-field eddy current effect, the resolution with which the total pipe thickness can be determined from measurements of the phase of the mutual impedance between the transmitter and the receiver of an eddy-current logging tool can be improved with a deconvolution approach utilizing the simulated or measured impulse response of a small pipe defect.