Patent ID: 11885924
Assignee: HALLIBURTON ENERGY SERVICES, INC.
Field: Measurement (Instruments)
Classification: CPC G  E | IPC E  G

Claim 19:
20. A method comprising:
disposing an electromagnetic (EM) logging tool in a wellbore, wherein the EM logging tool comprises:
a transmitter disposed on the EM logging tool; and
a receiver disposed on the EM logging tool;

transmitting an electromagnetic field from the transmitter into one or more tubulars to energize the one or more tubulars with the electromagnetic field thereby producing an eddy current that emanates from the one or more tubulars;
measuring the eddy current in the one or more tubulars with the receiver on at least one channel to obtain a plurality of measurements;
forming an EM log from the plurality of measurements;
identifying a representative signature of one or more collars from the EM log;
locating a plurality of signatures that are similar to the representative signature;
iteratively locating a collar signature based at least in part on the representative signature, the plurality of signatures that are similar to the representative signature, and a joint length;
locating the one or more collars with a machine learning model when the collar signature is not identified at one or both ends of the joint length; and
displaying a depth for each of the one or more collars.