System and method for performing seismic exploration with multiple acquisition systems

Patent metadata

Field	Value
Publication number	US-10101477-B2
Application number	US-201415105035-A
Country	US
Kind code	B2
Filing date	Dec 5, 2014
Priority date	Dec 17, 2013
Publication date	Oct 16, 2018
Grant date	Oct 16, 2018

Abstract

A system and method for performing seismic exploration with multiple acquisition systems is disclosed. The method includes configuring a first seismic source located outside of an exclusion zone and configuring a second seismic source located inside of the exclusion zone. The method further includes obtaining a first seismic dataset corresponding to a first seismic signal emitted by the first seismic source and obtaining a second seismic dataset corresponding to a second seismic signal emitted by the second seismic source. The method further includes combining the first and second datasets to create a complete dataset covering a survey area and creating a seismic image of a subsurface of the survey area.

First claim

What is claimed is:

1. A method of seismic exploration, comprising:
configuring a first seismic source located outside of an exclusion zone inside which using the first seismic source is restricted or limited;
configuring a second seismic source located inside of the exclusion zone, wherein using the second seismic source inside the exclusion zone is permitted;
obtaining a first seismic dataset recorded by first receivers and corresponding to a first seismic signal emitted by the first seismic source;
obtaining a second seismic dataset recorded by second receivers and corresponding to a second seismic signal emitted by the second seismic source;
combining the first and second datasets to create a complete dataset covering a survey area including the exclusion zone; and
creating a seismic image of a subsurface of the survey area based on the complete dataset.

2. The method of claim 1 , wherein the second seismic signal is a monofrequency.

3. The method of claim 1 , wherein the second seismic signal is a low energy frequency sweep.

4. The method of claim 1 , wherein the first seismic signal and the second seismic signal are emitted simultaneously.

5. The method of claim 1 , wherein the second seismic source is an electrically driven source.

6. The method of claim 5 , wherein the second seismic source is at least one of piezoelectric actuator, a magnetostrictive actuator, or an electrodynamic linear motor actuator.

7. The method of claim 1 , wherein both the first dataset and the second dataset are recorded by first receivers.

8. The method of claim 1 , wherein the second receivers have a different receiver spacing from the first receivers.

9. A seismic exploration system, comprising:
a first seismic source configured to emit a first seismic signal, the first seismic source located outside of an exclusion zone inside which using the first seismic source is restricted or limited;
a second seismic source configured to emit a second seismic signal, the second seismic source located inside the exclusion zone, wherein using the second seismic source inside the exclusion zone is permitted;
first receivers and second receivers configured to detect seismic signals emitted by the first and the second seismic source, respectively; and
a data processing system configured to:
obtain a first seismic dataset recorded by the first receivers and corresponding to the first seismic signal emitted by the first seismic source;
obtain a second seismic dataset recorded by the second receivers and corresponding to the second seismic signal emitted by the second seismic source;
combine the first and second datasets to create a complete dataset covering a survey area including the exclusion zone; and
create a seismic image of a subsurface of the survey area based on the complete dataset.

10. The seismic exploration system of claim 9 , wherein the second seismic signal is at least one monofrequency.

11. The seismic exploration system of claim 9 , wherein the second seismic signal is a low energy frequency sweep.

12. The seismic exploration system of claim 9 , wherein the first seismic signal and the second seismic signal are emitted simultaneously.

13. The seismic exploration system of claim 9 , wherein the second seismic source is an electrically driven source.

14. The seismic exploration system of claim 9 , wherein both the first dataset and the second dataset are recoded by first receivers.

15. The seismic exploration system of claim 9 , wherein the second receivers have a different receiver spacing from the first receivers.

16. A non-transitory computer-readable medium, comprising: computer-executable instructions carried on the computer-readable medium, the instructions, when executed, causing a processor to:
configure a first seismic source located outside of an exclusion zone inside which using the first seismic source is restricted or limited;
configure a second seismic source located inside of the exclusion zone, wherein using the second seismic source inside the exclusion zone is permitted;
obtain a first seismic dataset recorded by first receivers and corresponding to a first seismic signal emitted by the first seismic source;
obtain a second seismic dataset recorded by second receivers and corresponding to a second seismic signal emitted by the second seismic source;
combine the first and second datasets to create a complete dataset covering a survey area including the exclusion zone; and
create a seismic image of a subsurface of the survey area based on the complete dataset.

17. The non-transitory computer-readable medium of claim 16 , wherein the second seismic signal is a monofrequency.

18. The non-transitory computer-readable medium of claim 16 , wherein the second seismic signal is a low energy frequency sweep.

19. The non-transitory computer-readable medium of claim 16 , wherein the first seismic signal and the second seismic signal are emitted simultaneously.

20. The non-transitory computer-readable medium of claim 16 , wherein the second seismic source is an electrically driven source.

Assignees

• Cgg Services Sa
• Cgg Services Sas

Inventors

• Berron Cécile
• Herrmann Philippe
• Cotton Julien
• Forgues Eric
• Sallas John J

Classifications

• G01V2210/14

  Signal detection · CPC title

• G01V1/301

  for determining seismic cross-sections or geostructures · CPC title

• G01V1/005

  with exploration systems emitting special signals, e.g. frequency swept signals, pulse sequences or slip sweep arrangements · CPC title

• G01V2210/612

  Previously recorded data, e.g. time-lapse or 4D · CPC title

• G01V2210/12

  Signal generation · CPC title