Patent ID: 9435196
Filing Date: 2016-09-06
CPC Classification: E21B

Claim Text:
1. A method of transmitting downhole measurement data to surface comprising: (a) reading downhole measurement data; (b) selecting an available telemetry transmission mode from a group consisting of: mud pulse (MP)-only telemetry mode, electromagnetic (EM)-only telemetry mode, MP and EM concurrent shared telemetry mode, and MP and EM concurrent confirmation telemetry mode; (c) when the MP-only telemetry mode is selected, encoding the measurement data into a first MP telemetry signal and transmitting the first MP telemetry signal to surface, (d) when the EM-only mode is selected, encoding the measurement data into a first EM telemetry signal and transmitting the first EM telemetry signal to surface; (e) when the concurrent shared telemetry mode is selected, encoding a first selection of the measurement data into a second MP telemetry signal and a second selection of the measurement data into a second EM telemetry signal, transmitting the second MP and EM telemetry signals to surface and, at the surface, receiving the second MP and EM telemetry signals and combining the first and second selections of measurement data from the second MP and second EM telemetry signals into a single data stream; and (f) when the concurrent confirmation telemetry mode is selected, encoding the same measurement data into a third MP telemetry signal and into a third EM telemetry signal; and transmitting the third MP and EM telemetry signals to surface.