Multiple suppression in angle domain time and depth migration

• US 7,584,056 B2
• Filed: 02/22/2006
• Issued: 09/01/2009
• Est. Priority Date: 02/22/2005
• Status: Active Grant

• Current Assignee: Paradigm Geophysical Corporation (Emerson Electric Company)
• Original Assignee: Paradigm Geophysical Corporation (Emerson Electric Company)
• Inventors: Koren, Zvi
• Primary Examiner(s): Cosimano; Edward R
• Application Number:
  US11/358,296
• Publication Number:
  US 20060185929A1
• Time in Patent Office: 1,287 Days
• Field of Search: 702 1- 14, 702/17, 702/127, 702/187, 702/189, 702/190, 702/191, 702/193, 367/101, 367/7, 367/8, 367/9, 367/12, 367/14, 367/37, 367/38, 367/43, 367/87, 367/99, 175/40, 175/41, 175/50, 181/0.5, 181/101, 181/108, 181/113, 181/122, 181/123, 181/125
• US Class Current: 702/14
• CPC Class Codes: G01V 1/28 Processing seismic data, e.g. for interpretation or for event detection G01V1/48 takes precedence
• CPC Class Codes: G01V 1/362 Effecting static or dynamic corrections; Stacking
• CPC Class Codes: G01V 2210/51 Migration
• CPC Class Codes: G01V 2210/56 De-ghosting; Reverberation compensation

Abstract

Seismic data may be imaged using or recognizing substantially only primary reflections. Imaging seismic data may include for example integrating a plurality of seismic data points that have substantially similar arrival directions, for example, to a modeled primary ray. Seismic data points may be imaged that for example substantially meet a set of predetermined conditions, for example, conditions substantially unique to primaries, which may include for example arrival direction and angle of reflection.

Claims

1. A method of imaging seismic data, the method comprising:

accepting seismic data points; and

integrating a plurality of the seismic data points if the seismic data points have substantially similar arrival directions and travel times to that of a corresponding modeled primary ray.

2. The method of claim 1 comprising integrating substantially only primary reflections.

3. The method of claim 1 comprising integrating the plurality of the seismic data points using a beam stack mechanism.

4. The method of claim 1, comprising generating one image point using the plurality of the seismic data points.

5. The method of claim 1, wherein the plurality of the seismic data points each have substantially similar reflection angles and azimuthal rotational directions to that of the corresponding modeled primary ray.

6. The method of claim 1, wherein each of the plurality of the seismic data points reflect off of a subsurface structure at substantially similar locations.

7. The method of claim 1, wherein the plurality of the seismic data points are neighboring data points.

8. The method of claim 1, wherein the plurality of the seismic data points span a plane.

9. A method of imaging seismic data, the method comprising:

accepting seismic data; and

imaging seismic data points that substantially meet a set of predetermined conditions, wherein the set of predetermined conditions includes at least arrival direction and angle of reflection.

10. The method of claim 9 wherein substantially only primary seismic events meet the set of predetermined conditions.

11. The method of claim 9 wherein imaging comprises imaging substantially only primary reflected seismic events.

12. The method of claim 9 wherein the set of predetermined conditions includes at least travel time, arrival location, and azimuthal rotational directions.

13. The method of claim 9 wherein imaging comprises imaging a plurality of seismic data points to generate one primary data point.

14. The method of claim 9 wherein imaging seismic data comprises generating common reflection angle gathers.

15. The method of claim 9 comprising imaging seismic data using a beam stack mechanism.

16. The method of claim 9 comprising imaging seismic data using a migration mechanism in a time domain.

17. A system comprising:

a memory to store data corresponding to seismic data points; and

a processor to accept seismic data points; and

integrate a plurality of the seismic data points if the data corresponding to the seismic data points include substantially similar arrival directions and travel times to that of a corresponding modeled primary ray.

18. The system of claim 17, wherein the processor is to integrate substantially only primary reflections.

19. The system of claim 17 wherein the processor is to use a beam stack mechanism.

20. The system of claim 17, wherein the processor is to generate one image point using the plurality of the seismic data points.

21. A system comprising:

a memory to store seismic data; and

a processor to accept the seismic data; and

image seismic data points having seismic data that substantially meet a set of predetermined conditions, wherein the set of predetermined conditions includes at least arrival direction and angle of reflection.

22. The system of claim 21, wherein the processor is to image substantially only primary reflections.

23. The system of claim 21, wherein the plurality of seismic data points have arrival directions that are substantially similar to the arrival direction of a corresponding modeled primary ray.

24. The system of claim 21, wherein the processor is to use a beam stack mechanism.

25. The system of claim 21, wherein the processor is to generate one image point using the plurality of seismic data points.