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US 12,092,781 B2Granted
System and method for simultaneously acquiring wide azimuth and ocean bottom node surveys
AssigneeSchlumberger Technology Corporation
InventorsNicolae Moldoveanu, Steve Fealy
Life of this patent
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Abstract
A method may include receiving, via a processor, a first set of seismic data acquired via a Wide Azimuth (WAZ) survey. The method may also include receiving a second set of seismic data acquired via an Ocean Bottom Survey (OBS) simultaneously during a time period in which the first set of seismic data is acquired. The method may then involve processing the second set of data to obtain a velocity model of seismic waves for an area that corresponds to the WAZ survey and OBS and generating one or more seismic images of the area based on the velocity model and the first set of data.
Claims20
A system, comprising:
- a plurality of streamers comprising one or more streamer sensors configured to:
- acquire a first set of seismic data representative of one or more features of a subterranean region associated with a first time period during which the plurality of streamers is performing a continuous seismic survey and traversing a first plurality of sail lines;
- and
- acquire a second set of seismic data representative of the one or more features associated with a second time period after the first time period, wherein the second set of seismic data is acquired while traversing a second plurality of sail lines of the continuous seismic survey in an opposite direction of the first plurality of sail lines;
- a portion of a plurality of ocean bottom nodes the portion of the plurality of ocean bottom nodes comprising less than all of the plurality of ocean bottom nodes, wherein the portion of the ocean bottom nodes is configured to simultaneously acquire a third set of seismic data representative of the one or more features of the subterranean region while the plurality of streamers is acquiring the first set of seismic data, wherein the portion of the plurality of ocean bottom nodes corresponds to a shot sample that is a function of a sail line interval of the first plurality of sail lines;
- and
- a processing system configured to:
- process the first set of seismic data and the third set of seismic data to obtain a velocity model of seismic waves for the subterranean region;
- generate a fourth set of seismic data representative of the one or more features of the subterranean region based on the velocity model and the second set of seismic data;
- and
- generate one or more seismic images of the subterranean region based on the fourth set of seismic data.
8 more elements
A method, comprising:
- receiving, via a processor, a first set of seismic data and a second set of seismic data acquired via a Wide Azimuth (WAZ) survey, wherein the first set of seismic data is acquired during a first time period while a plurality of streamers is traversing a first plurality of sail lines, and wherein the second set of seismic data is acquired during a second time period while the plurality of streamers is traversing a second plurality of sail lines opposite the first plurality of sail lines;
- receiving, via the processor, a third set of seismic data acquired via an Ocean Bottom Survey (OBS) simultaneously during the first time period, wherein the OBS comprises acquiring the third set of seismic data via a portion of a plurality of ocean bottom nodes corresponding to a shot sample that is a function of a sail line interval of the first plurality of sail lines the portion of the plurality of ocean bottom nodes comprising less than all of the plurality of ocean bottom nodes;
- processing, via the processor, the first set of seismic data and the third set of seismic data to obtain a velocity model of seismic waves for an area that corresponds to the WAZ survey and the OBS;
- generating, via the processor, a fourth set of seismic data based on the velocity model and the second set of seismic data;
- and
- generating, via the processor, one or more seismic images of the area based on the velocity model and the fourth set of seismic data.
3 more elements
A non-transitory computer-readable medium comprising computer-executable instructions that, when executed, are configured to cause at least one processor to perform one or more operations comprising:
- receiving a first set of seismic data during a first portion of a Wide Azimuth (WAZ) survey while a plurality of streamers is traversing a first plurality of sail lines and a second set of seismic data during a second portion of the WAZ survey different than the first portion while the plurality of streamers is traversing a second plurality of sail lines opposite the first plurality of sail lines;
- receiving a third set of seismic data acquired via an Ocean Bottom Survey (OBS) simultaneously during a time period in which the first set of seismic data is acquired, wherein the OBS comprises acquiring the third set of seismic data via a portion of a plurality of ocean bottom nodes corresponding to a shot sample that is a function of a sail line interval of the first plurality of sail lines the portion of the plurality of ocean bottom nodes comprising less than all of the plurality of ocean bottom nodes;
- processing the first set of seismic data and the third set of seismic data to obtain a velocity model of seismic waves for an area that corresponds to the WAZ survey and the OBS;
- generating a fourth set of seismic data based on the velocity model and the second set of seismic data;
- and
- generating one or more seismic images of the area based on the fourth set of seismic data.
3 more elements
Dependencies are inferred from the claim text.