METHOD OF EVALUATING A GROUND TRAINING AND APPARATUS CONFIGURED TO ASSESS A GROUND TRAINING.

摘要

method of assessing a ground formation and apparatus configured to evaluate a ground formation. The present invention relates to a transient electromagnetic signal that is recorded in a ground formation in the presence of a tube that has a finite conductivity. A portion of the signal dominated by the tube signal is analyzed to determine a functional representation, extrapolated back to a time interval in which the forming signal is present, and subtracted from the recorded signal to provide a corrected signal.