Patent attributes
A method comprising: disposing an induction tool in a cased hole, wherein the induction tool comprises a transmitter and a receiver; broadcasting electromagnetic fields from the transmitter into a subterranean formation to form an eddy current; recording the eddy current with the receiver to produce induction measurements; obtaining a log comprising at least one channel from the induction measurements; constructing an inversion cost functional comprising a misfit term and a regularization term; performing a first inversion using the inversion cost functional to estimate pipe properties at a first plurality of depth points; optimizing the inversion cost functional such that the estimated pipe properties at the first plurality of depth points minimize an objective functional; performing a second inversion using the optimized inversion cost functional to estimate pipe properties at a second plurality of depth points; and displaying the pipe properties at the second plurality of depth points to a user.
