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1. (WO2018140039) ECCENTRIC FERRITE COILS FOR RANGING APPLICATIONS

Pub. No.:    WO/2018/140039    International Application No.:    PCT/US2017/015412
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 28 00:59:59 CET 2017
IPC: E21B 47/022
E21B 47/09
G01V 3/18
Applicants: HALLIBURTON ENERGY SERVICES, INC.
Inventors: KALATEH AHMAD, Akram Ahmadi
DONDERICI, Burkay
CAPOGLU, Ilker R.
Title: ECCENTRIC FERRITE COILS FOR RANGING APPLICATIONS
Abstract:
A method and system for wellbore ranging. A method for wellbore ranging may comprise placing a coil antenna in a wellbore, wherein the coil antenna may comprise one or more coil windings, and the coil windings comprise a magnetic material. The method may further comprise measuring a characteristic of an induced electromagnetic field with the coil antenna. A system for wellbore ranging may comprise an electromagnetic ranging tool which may further comprise a coil antenna, wherein the coil antenna comprises one or more coil windings, and wherein the coil windings comprise a magnetic material. The method may further comprise an information handling system, wherein the information handling system may be operable to measure a characteristic of an induced electromagnetic field with the coil antenna.