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US 10,520,626 B2Granted
Continuous beamforming while moving: method to reduce spatial aliasing in leak detection
AssigneeHalliburton Energy Services, Inc.
InventorsYi Yang Ang, Nam Nguyen, Joni Lie
Life of this patent
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Abstract
Tools, systems, and methods may be configured for or include detecting one or more underground acoustic sources and localizing them in depth and radial distance from a wellbore using an array of at least three acoustic sensors disposed in the wellbore in conjunction with array-signal-processing that accounts for movement of the acoustic sensors and spatial aliasing by using adaptive time dependent modelled steering vector weights.
Claims20
A method comprising:
- moving a sensor array comprising at least three sensors with each sensor a distance from each other along a wellbore;
- substantially simultaneously measuring acoustic signals from an acoustic source with each of the at least three sensors;
- and processing the acoustic signals in combination using an array-signal-processing technique that uses adaptive time-dependent modelled steering vector weights to identify a location of the acoustic source by a depth and a radial distance from the wellbore.
A system comprising:
- a sensor array movable along a wellbore and comprising at least three acoustic sensors with each sensor a distance away from each other for substantially simultaneously measuring acoustic signals from an acoustic source and received thereat;
- and
- non-transitory computer-readable medium encoded with instructions that, when executed, perform operations:
- the substantially simultaneously measuring acoustic signals from the acoustic source with each of the at least three sensors in the sensor array moving along the wellbore;
- and
- processing the acoustic signals in combination using an array-signal-processing technique that includes an adaptive time-dependent modelled steering vector to determine a depth and a radial distance from the wellbore of the acoustic source.
3 more elements
A non-transitory computer-readable medium encoded with instructions that, when executed, perform operations comprising:
- substantially simultaneously measuring acoustic signals from an acoustic source with each of at least three sensors with each sensor a distance away from each other in a sensor array moving along a wellbore;
- and
- processing the acoustic signals in combination using an array-signal-processing technique that includes an adaptive time-dependent modelled steering vector to determine a depth and a radial distance from the wellbore of the acoustic source.
Dependencies are inferred from the claim text.