Patent ID: 8899347
Filing Date: 2014-12-02
Classification: E21B,Y10T

Abstract:
1. A system for use during drilling of a wellbore, comprising: a top drive unit; a drill string wherein at least a portion of the drill string comprises a plurality of wired drill pipes; and a saver sub to connect the drill string to the top drive unit, wherein the saver sub is positioned at the surface between the drill string and the top drive unit and further wherein the saver sub comprises a mandrel having a recessed region therein, electronics, a battery to power the electronics, and an antenna to relay and receive data; and a shell removably mounted in the recessed region of the mandrel, the shell comprising an attachment mechanism for quick installation and removal from the mandrel, the electronics and the battery positioned in the shell whereby the electronics and battery are removably mounted to at least a portion of the mandrel.