Methods and systems for communicating data through a pipe
AssigneeThe Charles Stark Draper Laboratory, Inc.
InventorRobert Tingley
Life of this patent
Estimating the term…
Abstract
An acoustic telemetry system includes a piezoelectric stack at least partially disposed within a segment of pipe, and electrical circuitry for controlling the piezoelectric stack. In response to a signal from the electrical circuitry, the piezoelectric stack generates a plurality of acoustic signals for transmission through the pipe at different frequencies spanning multiple regions of a frequency response for the pipe.
Claims39
A method for communicating data through a drill string in a drilling system, the drilling system (i) including a downhole unit and a surface unit, and (ii) extending from the downhole unit to the surface unit, the method comprising:
- receiving an electrical signal comprising data indicative of at least one system parameter;
- deriving a plurality of acoustic signals based on the electrical signal, each acoustic signal representing at least a portion of the data;
- and
- transmitting the plurality of acoustic signals through the drill string at different frequencies spanning multiple regions of a frequency response for the drill string.
A method for noise cancellation during data communication through a pipe, the method comprising:
- receiving an electrical signal;
- deriving an acoustic signal based on the electrical signal;
- sensing a noise signal in the pipe;
- generating a corrective signal to counteract the noise signal;
- and
- transmitting the acoustic signal and the corrective signal through the pipe.
An acoustic telemetry system, comprising:
- a pipe;
- a piezoelectric stack at least partially disposed within a segment of the pipe for generating a plurality of acoustic signals for transmission through the pipe at different frequencies spanning multiple regions of a frequency response for the pipe;
- and
- first electrical circuitry for controlling the piezoelectric stack.
An acoustic telemetry system, comprising:
- a piezoelectric stack for disposition within a segment of a pipe, the stack, when so disposed, generating a plurality of acoustic signals for transmission through the pipe at different frequencies spanning multiple regions of a frequency response for the pipe;
- and
- first electrical circuitry for controlling the piezoelectric stack.
A method for communicating data through a pipe, the method comprising:
- receiving an electrical signal comprising data indicative of at least one parameter;
- deriving a plurality of acoustic signals based on the electrical signal, each acoustic signal representing at least a portion of the data;
- and
- transmitting the plurality of acoustic signals through the pipe at different frequencies spanning multiple regions of a frequency response for the pipe.
Dependencies are inferred from the claim text.