Patent ID: 9116016
Filing Date: 2015-08-25
Classification: E21B,G01D,G01V

Abstract:
1. A system for locating a downhole apparatus, the system comprising: a wellbore having an interior pressure cavity, wherein the downhole apparatus is disposed in the pressure cavity; a pressure barrier disposed in the wellbore and defining the interior pressure cavity; a magnetic device physically coupled to the downhole apparatus for generating a magnetic field in an interior pressure cavity of a wellbore by passing the downhole apparatus and the magnetic device coupled thereto through the interior pressure cavity; and a magnetic field indicator disposed external to the pressure cavity, the magnetic field indicator responsive to the magnetic field in the pressure cavity, wherein the magnetic field is indicative of a position of the apparatus in the pressure cavity, and wherein the apparatus is configured to pass through the interior pressure cavity to perform a downhole or in-bore operation.