Patent ID: 9207352
Filing Date: 2015-12-08
Classification: E21B,F16M,G01C,G01V

Abstract:
1. An apparatus for initializing a tool, the tool configured to be moved along a wellbore and to generate information usable to determine an orientation of the tool, the apparatus comprising: at least one directional reference system configured to provide data indicative of an orientation of the at least one directional reference system with respect to a reference direction; and a mounting portion mechanically coupled to the at least one directional reference system, the mounting portion configured to be mechanically coupled to the tool while the tool is outside the wellbore such that the tool has a predetermined orientation with respect to the at least one directional reference system while the tool is outside the wellbore, the mounting portion further configured to be mechanically decoupled from the tool while the tool is within the wellbore.