Patent ID: 9512712
Filing Date: 2016-12-06
CPC Classification: E21B,G01N

Claim Text:
1. A method, comprising: conveying a pipe inspection tool into a wellbore having at least a first pipe positioned within a second pipe, the pipe inspection tool including an electromagnetic sensor; transmitting a first excitation signal from a first x-coil of the electromagnetic sensor; receiving and measuring a first response signal derived from the first excitation signal at the first x-coil or a second x-coil of the electromagnetic sensor; transmitting a second excitation signal from a first y-coil of the electromagnetic sensor; receiving and measuring a second response signal derived from the first second excitation signal at the first y-coil or a second y-coil of the electromagnetic sensor; and processing the first and second response signals to determine at least one azimuthal characteristic of the second pipe, wherein the first x-coil and the first y-coil comprise a first antenna and the second x-coil and the second y-coil comprise a second antenna, and wherein the first and second antennas are collocated.