Patent ID: 9097813
Filing Date: 2015-08-04
Classification: E21B,G01B,G01V

Abstract:
1. A system for sensing a pipe joint within a well structure, the system comprising: a body connectable in line with said well structure, said body having a central bore therethrough along a central axis corresponding to a central bore of said well structure and an outer surface, said body including a plurality of blind bores extending radially inwards from said outer surface, said body having a barrier wall extending between said blind bores and said central bore so as to isolate said blind bores from said central bore; at least one sleeve being locatable within one of said plurality of blind bores, each of said sleeves having a magnet located at an end thereof; and at least one sensor being locatable within one of said at least one sleeves, said at least one sensor being operable to output a signal representing the width of a metallic object located within said central bore.