公开(公告)号：WO2019005016A1

公开(公告)日：2019-01-03

申请号：PCT/US2017/039547

申请日：2017-06-27

Applicant: HALLIBURTON ENERGY SERVICES, INC.

Inventor： GUNER, Baris ,  DONDERICI, Burkay ,  AMINEH, Reza K. ,  FOUDA, Ahmed E.

IPC: G01N27/90 ,  G01B7/06 ,  E21B47/08 ,  G01V3/12 ,  G01N33/20

Abstract: Eddy current logging enables corrosion monitoring in nested-pipe arrangements. An illustrative method of logging total thickness of the pipe walls includes acquiring measurements from an electromagnetic logging tool conveyed through the innermost bore, each measurement associated with a TRF combination (transmit antenna, receive antenna, and frequency), and further associated with a position along the bore. Multiple scale factors are applied to the measurements to determine multiple total thickness estimates for each poisition, each of the multiple scale factors corresponding to a subset of single-pipe defect profiles. Preferably, every possible single-pipe defect profile is included in at least one of these subsets. A total thickness log value for each position is derived from the multiple total thickness estimates for that position, and the derived total thickness log values are used to update a displayed total thickness log as the measurements are being acquired.