Imaging subterranean anomalies using acoustic doppler arrays and distributed acoustic sensing fibers
AssigneeHalliburton Energy Services, Inc.
InventorsBurkay Donderici, Paul Rodney, Joseph Young
Life of this patent
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Abstract
A system to obtain information about a subsurface formation, in some embodiments, comprises an array of acoustic transmitters in a first well; a distributed acoustic sensing (DAS) fiber in a second well; and processing logic, in communication with the array of acoustic transmitters and the DAS fiber, that activates the array of acoustic transmitters and the DAS fiber so as to use the Doppler effect to obtain information about the subsurface formation.
Claims21
A system to obtain information about a subsurface formation, comprising:
- an array of acoustic transmitters in a first well;
- a distributed acoustic sensing (DAS) fiber in a second well;
- and
- processing logic, in communication with the array of acoustic transmitters and the DAS fiber, that activates the array of acoustic transmitters and the DAS fiber so as to use the Doppler effect to obtain information about the subsurface formation.
A system for imaging a subsurface formation, comprising:
- an acoustic transmitter, positioned in a well, to transmit signals toward the subsurface formation;
- a distributed acoustic sensing (DAS) fiber located outside of said well to receive signals incident upon said subsurface formation;
- and
- processing logic in communication with the acoustic transmitter and the DAS fiber,
- wherein the processing logic causes the acoustic transmitter to effectively move during transmission of said signals, and
- wherein the processing logic uses the received signals to generate an image of said subsurface formation.
A method to obtain information about a subsurface formation, comprising:
- providing a measurement unit;
- providing a distributed acoustic sensing (DAS) fiber;
- providing signals between the measurement unit and the DAS fiber, at least some of said signals incident upon the subsurface formation;
- during said provision of signals, effectively moving the measurement unit;
- and
- using said signals incident upon the subsurface formation to obtain information pertaining to the subsurface formation.
Dependencies are inferred from the claim text.