Systems and methods for determining the far field signature of a source in wide azimuth surveys
AssigneeCgg Services SAS
InventorsAnne Vesin, Karine Desrues
Life of this patent
Estimating the term…
Abstract
Systems and methods for determining the far field signature of a source in wide azimuth surveys are disclosed. The method includes determining a position of a first sensor and a source. The first sensor is attached to a first vessel and the source is attached to a second vessel. The method further includes calculating a reflected incidence angle between the first sensor and the source, determining a position for a second sensor based on a direct incidence angle between the second sensor and the source approximating the direct incidence angle. The method also includes determining a far field signature for the source based on the direct incidence angle.
Claims20
A method for seismic data processing, comprising:
- determining a position of a first sensor and a source, wherein the first sensor is attached to a first vessel and the source is attached to a second vessel;
- calculating a reflected incidence angle between the first sensor and the source;
- determining a position for a second sensor based on a direct incidence angle between the second sensor and the source approximating the reflected incidence angle between the first sensor and the source;
- and
- determining a far field signature for the source based on the direct incidence angle between the second sensor and the source.
The method of claim 0, further comprising utilizing the far field signature to generate an image of subsurface geological formations.
A seismic survey system, comprising:
- a source configured to emit seismic waves;
- a first sensor and a second sensor configured to transform seismic waves into a recorded signal;
- and
- a computing system comprising:
- a processor;
- a memory communicatively coupled to the processor;
- instructions stored in the memory that, when executed by the processor, cause the processor to:
- determine a position of the first sensor and the source, wherein the first sensor is attached to a first vessel and the source is attached to a second vessel;
- calculate a reflected incidence angle between the first sensor and the source;
- determine a position for a second sensor based on a direct incidence angle between the second sensor and the source approximating the reflected incidence angle between the first sensor and the source;
- and
- determine a far field signature for the source based on the direct incidence angle between the second sensor and the source.
A non-transitory computer-readable medium, comprising instructions that, when executed by a processor, cause the processor to:
- determine a position of a first sensor and a source, wherein the first sensor is attached to a first vessel and the source is attached to a second vessel;
- calculate a reflected incidence angle between the first sensor and the source;
- determine a position for a second sensor based on a direct incidence angle between the second sensor and the source approximating the reflected incidence angle between the first sensor and the source;
- and
- determine a far field signature for the source based on the direct incidence angle between the second sensor and the source.
Dependencies are inferred from the claim text.