Removal of acquisition effects from marine seismic data

Patent metadata

Field	Value
Publication number	US-10996359-B2
Application number	US-201615572016-A
Country	US
Kind code	B2
Filing date	May 4, 2016
Priority date	May 5, 2015
Publication date	May 4, 2021
Grant date	May 4, 2021

Abstract

Marine seismic data can be processed to remove or reduce two or more source side acquisition effects jointly when 1) the effects are placed in the same data domain as the received data and 2) the effects are described using the same basis functions which may signify representing the received data and the effects in the same chosen transform domain. The data effects may include source signature removal, source radiation pattern removal, residual shot noise suppression and data regularization, multi-channel reconstruction or regularization, prediction of sea surface multiples, separation of simultaneous sources etc. The joint processing can use iterative or non-iterative inversion technique, where the iterative inversion technique may be a matching pursuit technique.

First claim

What is claimed is:

1. A method for processing marine seismic measurements from a marine seismic survey to identify subsurface structures of the Earth, comprising:
using a computer processor:
representing the seismic measurements and a plurality of acquisition effects in a same data domain and by a same set of basis functions;
concurrently processing the seismic measurements with the plurality of acquisition effects, wherein the concurrent processing removes at least two different types of acquisition effects of the plurality of acquisition effects from the seismic measurements as a result of the same set of basis functions representing each of the at least two different types of acquisition effects and the seismic measurements;
outputting the processed seismic measurements, which includes building an image of a survey area to enable identification of subsurface structures of the Earth.

2. The method of claim 1 , wherein the data domain is a common-node gather, common-receiver gather, or common-offset gather.

3. The method of claim 1 , wherein the basis functions represent the seismic measurements and the acquisition effects in a single transform domain.

4. The method of claim 3 , wherein the transform domain is a frequency-slowness domain, a tau-p domain, a frequency-wavenumber domain, a curvelet domain, or a wavelet domain.

5. The method of claim 1 , wherein the processing to remove at least some of the plurality of acquisition effects comprises two or more of source signature removal, source radiation pattern removal, residual shot noise suppression, or data regularization.

6. The method of claim 5 , wherein the processing to remove at least some of the plurality of acquisition effects further comprises one or more of:
prediction of sea surface multiples;
beyond Nyquist multi-channel reconstruction/regularization; or
separation of additional simultaneous sources.

7. The method of claim 1 , wherein the processing uses an iterative inversion technique.

8. The method of claim 7 , wherein the processing uses a matching pursuit technique.

9. The method of claim 1 , wherein the marine seismic survey comprises a survey generated using at least one marine vibrator as seismic source.

10. The method of claim 1 , wherein the marine seismic survey comprises a survey generated using seismic sensors deployed on a seabed.

11. The method of claim 1 , wherein the marine seismic survey comprises a survey generated using at least one towed streamer containing seismic sensors.

12. The method of claim 1 , wherein the method includes receiving recorded seismic measurements through an interface of the computer processor.

13. A method of carrying out a marine seismic survey to identify undersea structures of the Earth, wherein the method comprises processing data by a method as in claim 1 .

14. The method of claim 1 , wherein the at least two different types of acquisition effects are source-side acquisition effects that do not result from features of the Earth.

15. The method of claim 14 , wherein the same basis functions represent the seismic measurements and the at least two different types of source-side acquisition effects include at least two of: (i) source motion; (ii) input data geometry; (iii) source signature; (iv) radiation pattern; or (v) residual shot noise.

16. The method of claim 15 , wherein the basis functions represent the seismic measurements and the at least two different types of source-side acquisition effects in a common-node domain by using a frequency-slowness domain as a transform domain.

17. A system comprising:
an interface to receive seismic measurements from a marine seismic survey to identify subsurface structures of the Earth; and
a computer processor to
represent the received seismic measurements and at least two different types of acquisition effects in a same data domain and by a same set of basis functions;
concurrently process the seismic measurements with the at least two different types of acquisition effects, which thereby removes the at least two different types of acquisition effects from the seismic measurements as a result of the same set of basis functions representing each of the at least two different types of acquisition effects and the seismic measurements;
output the processed seismic measurements; and
use the output processed seismic measurements by at least one of:
building up an image of a survey area corresponding to the marine seismic survey;
identifying a geological formation in the subsurface structures of the Earth; or
identifying a probably location of a hydrocarbon deposit in the subterranean structures of the Earth.

18. The system according to claim 17 , wherein processing the measurements and acquisition effects to remove acquisition effects is performed by iterative processing of the received measurements.

Assignees

• Schlumberger Technology Corp

Inventors

• Halliday David Fraser

Classifications

• G01V1/36 Primary

  Effecting static or dynamic corrections on records, e.g. correcting spread; Correlating seismic signals; Eliminating effects of unwanted energy · CPC title

• G01V1/38

  specially adapted for water-covered areas (G01V1/28 takes precedence) · CPC title

• G01V2210/56

  De-ghosting; Reverberation compensation · CPC title

• G01V2210/32

  Noise reduction · CPC title

• G01V1/247

  Digital recording of seismic data, e.g. in acquisition units or nodes · CPC title