Patent Number: 7,132,958

Title: Downhole telemetry system using multiple uplink modes as data channels using discrete multi-tone modulation

Abstract: A method and a downhole telemetry system a downhole telemetry system using discrete multitone modulation for transmitting a data stream over a plurality of transmission modes is provided. The downhole telemetry system includes a downhole transmitter, a cable, and a surface receiver. The downhole transmitter is configured to transmit the data stream over the plurality of transmission modes. The surface receiver is coupled to the downhole transmitter via the cable and is configured to combine signals from each of the plurality of transmission modes to obtain the data stream transmitted by the downhole receiver. The method includes receiving a plurality of signals over the plurality of transmission modes from a downhole package, and may further include combining the plurality of signals to form at least one data stream.

Inventors: Dodge; Carl (Houston, TX), Gardner; Wallace R. (Houston, TX)

Assignee: Halliburton Energy Services, Inc.

International Classification: G01V 3/00 (20060101); G01V 1/18 (20060101); H04B 7/216 (20060101); H04R 17/00 (20060101)

Expiration Date: 2019-11-07 0:00:00