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1. (WO2018125073) DOWNHOLE ELECTROMAGNETIC CORROSION DETECTION USING KNOWN PIPE FEATURES AND NATURAL PIPE VARIATION REJECTION

Pub. No.:    WO/2018/125073    International Application No.:    PCT/US2016/068812
Publication Date: Fri Jul 06 01:59:59 CEST 2018 International Filing Date: Thu Dec 29 00:59:59 CET 2016
IPC: G01N 24/08
G01N 17/04
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: KHALAJ AMINEH, Reza
DONDERICI, Burkay
Title: DOWNHOLE ELECTROMAGNETIC CORROSION DETECTION USING KNOWN PIPE FEATURES AND NATURAL PIPE VARIATION REJECTION
Abstract:
A method of filtering measured responses of downhole pipes, obtained by electromagnetic (EM) logging tools, to correct for natural variations in downhole pipes during downhole pipe defect characterization. A further method of directly characterizing downhole pipe defects by obtaining measured responses at known pipe features, such as casing collars. An apparatus and system for characterizing downhole pipe corrosion is also disclosed.