Patent ID: 8502696
Filing Date: 2013-08-06
Classification: E21B,G01V

Abstract:
1. A wellbore telemetry system, comprising: a drill string in a wellbore having a portion of wired drill pipe that carries a data communication link and supplies fluid under pressure during drilling of the wellbore and a portion of non-wired drill pipe that supplies fluid under pressure during drilling of the wellbore, and a sub coupling the wired drill pipe and the non-wired drill pipe, the sub comprising at least a pressure sensor; a drilling assembly at a bottom end of the non-wired drill pipe, the drilling assembly carrying a plurality of tools; a downhole pulser in the drilling assembly that is configured to send data to the sub or to the surface by producing pressure pulses in the fluid; a first data transmission device that transmits data received at the pressure sensor from the downhole pulser to the surface via the data communication link in the wired drill pipe.