Temperature sensing using distributed acoustic sensing
AssigneeBaker Hughes, A Ge Company, LLC
InventorWilliam Johnston
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Abstract
An embodiment of a method of measuring temperatures includes: taking distributed acoustic sensing (DAS) measurement data by transmitting interrogation signals into an optical fiber disposed in an environment of interest, and receiving reflected signals over a selected time period from the optical fiber; processing the DAS measurement data to separate components of the DAS data associated with changes in temperature; and generating a temperature change profile for the selected time period based on the separated components of the DAS data.
Claims20
A method of measuring temperatures, comprising:
- taking distributed acoustic sensing (DAS) measurement data by transmitting interrogation signals into an optical fiber disposed in an environment of interest, and receiving reflected signals over a selected time period from the optical fiber;
- processing the DAS measurement data to separate components of the DAS data associated with changes in temperature;
- and
- generating a temperature change profile for the selected time period based on the separated components of the DAS data.
A system for measuring temperatures, comprising:
- a distributed acoustic sensing (DAS) measurement device including an optical fiber configured to be disposed in an environment of interest and an interrogation unit configured to transmit interrogation signals and receive reflected signals over a selected time period from the optical fiber;
- a processor configured to receive DAS measurement data generated based on the reflected signals, the processor configured to perform:
- processing the DAS measurement data to separate components of the DAS data associated with changes in temperature;
- and
- generating a temperature change profile for the selected time period based on the separated components of the DAS data.
Dependencies are inferred from the claim text.