METHOD AND SYSTEM FOR AVOIDING DAMAGE TO BEHIND-CASING STRUCTURES

摘要

A structure is positioned on the outer surface of a casing or liner to enabl e cutting the casing in substantially any azimuth over a given length of casing withou t damaging the structure. After placing the casing in a wellbore, the position of the structure on the casing may be determined with reference to an orienting slot in an indexing coupling. Thereafter, a non-colliding region on the casing may be identified for cutti ng the casing.