Sending a seismic trace to surface after a vertical seismic profiling while drilling measurement
AssigneeBaker Hughes Incorporated
InventorsRadu Coman, Michael Neubert
Life of this patent
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Abstract
A system, method and computer-readable medium for acquiring seismic data, which includes activating a seismic source at a surface location; defining a seismic trace of a seismic wave received at a downhole location on a bottomhole assembly in a borehole in response to the activation of the seismic source; compressing the seismic trace; and recording the compressed seismic trace to a storage medium.
Claims16
A method of acquiring seismic data, comprising:
- activating a seismic source at a surface location according to a predefined shooting sequence during a seismic measurement, wherein the predefined shooting sequence comprises a plurality of shots at predetermined intervals between successive ones of the plurality of shots;
- and
- using a processor for:
- defining a seismic trace of a seismic wave received at a downhole location on a carrier in a borehole in response to the activation of the seismic source;
- and
- creating a compressed seismic trace from the seismic trace by:
- detecting a seismic event within the seismic trace, and
- performing, in response to the detection, at least one of:
- (i) reducing a sampling rate for the compressed seismic trace in comparison with the seismic trace, and (ii) reducing the number of bits per sample in the compressed seismic trace in comparison with the seismic trace.
A system for acquiring seismic data, comprising:
- a seismic source configured to provide seismic energy at a surface location according to a predefined shooting sequence;
- a receiver configured to receive a seismic wave at a downhole location on a carrier in a borehole in response to an activation of the seismic source according to the predefined shooting sequence during a seismic measurement, wherein the predefined shooting sequence comprises a plurality of shots at predetermined intervals between successive ones of the plurality of shots;
- and
- a downhole processor configured to:
- define a seismic trace of the received seismic wave, and
- create a compressed seismic trace from the seismic trace by:
- detecting a seismic event within the seismic trace, and
- performing, in response to the detection, at least one of:
- (i) reducing a sampling rate for the compressed seismic trace in comparison with the seismic trace, and (ii) reducing the number of bits per sample in the compressed seismic trace in comparison with the seismic trace.
A non-transitory computer-readable medium product having stored thereon instructions that when read by at least one processor cause the at least one processor to execute a method, the method comprising:
- defining a seismic trace from a seismic wave received at a downhole location on a carrier in a borehole in response to the activation of a seismic source using a predefined shooting sequence at a surface location during a seismic measurement, wherein the predefined shooting sequence comprises a plurality of shots at predetermined intervals between successive ones of the plurality of shots;
- and
- creating a compressed seismic trace from the seismic trace by:
- detecting a seismic event within the seismic trace, and
- performing, in response to the detection, at least one of:
- (i) reducing a sampling rate for the compressed seismic trace in comparison with the seismic trace, and (ii) reducing the number of bits per sample in the compressed seismic trace in comparison with the seismic trace.
Dependencies are inferred from the claim text.