Simulation and inversion of ultrasonic pitch-catch through-tubing well logging with an array of receivers
Journal article, Peer reviewed
MetadataShow full item record
Original versionNDT & E international. 2016, 85 72-75. 10.1016/j.ndteint.2016.10.008
Current methods for ultrasonic pitch-catch well logging use two receivers to log the bonded material outside a single casing. For two casings separated by a fluid, we find by simulation that increasing the number of receivers provides a better picture of the effect of the bonded material outside the second casing. Inverting simulated measurements with five receivers, using a simulated annealing algorithm and a simple forward model, we find for a subset of simulations that we can estimate the impedance of the material outside the outer casing.