Noise removal for distributed acoustic sensing data
AssigneeHalliburton Energy Services, Inc.
InventorsMark Elliott Willis, Oscar Augusto Barrios, Victor K. Leung, Andreas Ellmauthaler
Life of this patent
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Abstract
An example system for noise removal in distributed acoustic sensing data may include a distributed acoustic sensing (DAS) data collection system and an information handling system coupled thereto. The information handling system may receive seismic information from the DAS data collection system. The seismic information may include seismic traces associated with a plurality of depths in the wellbore. The information handling system may also generate a noise pilot trace by stacking one or more of the seismic traces, and subtract the noise pilot trace from the seismic information received from the DAS data collection system.
Claims33
A system, comprising:
- a distributed acoustic sensing (DAS) data collection system coupled to at least one optical fiber at least partially positioned within a wellbore;
- and
- an information handling system coupled to the DAS data collection system, the information handling system comprising a processor and a memory device coupled to the processor, the memory device containing a set of instruction that, when executed by the processor, cause the processor to:
- receive seismic information from the DAS data collection system, the seismic information comprising seismic traces associated with a plurality of depths in the wellbore, wherein the seismic traces comprise infinite or near infinite velocity noise events inherent to the DAS data collection system;
- collect a selection of traces, wherein the selection of traces comprises one or more of the seismic traces that represent a trace-to-trace consistent noise;
- generate a noise pilot trace by stacking the selection of traces, wherein the noise pilot trace is an estimate of the infinite or near infinite velocity noise events;
- subtract the noise pilot trace from the seismic information received from the DAS data collection system;
- and
- provide a reduced noise seismic information based on the subtraction.
A method, comprising:
- receiving seismic information from a distributed acoustic sensing (DAS) data collection system coupled to at least one optical fiber that is at least partially positioned within a wellbore, the seismic information comprising seismic traces associated with a plurality of depths in the wellbore, wherein the seismic traces comprise infinite or near infinite velocity noise events inherent to the DAS data collection system;
- collecting a selection of traces, wherein the selection of traces comprises one or more of the seismic traces that represent a trace-to-trace consistent noise;
- generating a noise pilot trace by stacking the selection of traces, wherein the noise pilot trace is an estimate of the infinite or near infinite velocity noise events;
- subtracting the noise pilot trace from the seismic information received from the DAS data collection system;
- and
- providing a reduced noise seismic information based on the subtraction.
A non-transitory computer-readable medium comprising instructions that, when executed by a processor, cause a processor to:
- receive seismic information from a distributed acoustic sensing (DAS) data collection system coupled to at least one optical fiber that is at least partially positioned within a wellbore, the seismic information comprising seismic traces associated with a plurality of depths in the wellbore, wherein the seismic traces comprise infinite or near infinite velocity noise events inherent to the DAS data collection system;
- collect a selection of traces, wherein the selection of traces comprises one or more of the seismic traces that represent a trace-to-trace consistent noise;
- generate a noise pilot trace by stacking the selection of traces, wherein the noise pilot trace is an estimate of the infinite or near infinite velocity noise events;
- subtract the noise pilot trace from the seismic information received from the DAS data collection system;
- and
- provide a reduced noise seismic information based on the subtraction.
Dependencies are inferred from the claim text.