Real time identification of extraneous noise in seismic surveys

Patent metadata

Field	Value
Publication number	US-11892582-B2
Application number	US-202017005784-A
Country	US
Kind code	B2
Filing date	Aug 28, 2020
Priority date	Aug 28, 2020
Publication date	Feb 6, 2024
Grant date	Feb 6, 2024

Abstract

A system to detect and control noise in seismic surveys is provided. The system receives, responsive to a seismic wave generated by a source, seismic data detected by a sensor component of a seismic data acquisition unit. The system generates, for windows of the seismic data, Hough tensors for seismic data transforms in multiple dimensions. The system detects, based on a comparison of an eigenvector and eigenvalue of a canonical matrix of the Hough tensors with a historical eigenvector and eigenvalue of a historical canonical matrix of historical Hough tensors of historical seismic data, a first presence of noise in the seismic data. The first presence of noise can correspond to a noisy spectra pattern in a seismic data transform of the seismic data. The system provides, responsive to detection of the first presence of noise in the seismic data, a notification to adjust a characteristic of the seismic survey.

First claim

What is claimed is:

1. A system to detect and control noise in seismic surveys, comprising:
a data processing system comprising memory and one or more processors is configured to:
receive, responsive to a seismic wave generated by a source, a first seismic data detected by a sensor component of a seismic data acquisition unit;
generate, for a first plurality of windows of the first seismic data, a first Hough tensors, wherein the first Hough tensors are generated, for a first plurality of seismic data transforms, in a plurality of dimensions;
detect, based on a comparison of an eigenvector and eigenvalue of a canonical matrix of the first Hough tensors with a historical eigenvector and eigenvalue of a historical canonical matrix of historical Hough tensors of historical seismic data, a first presence of noise in the seismic data corresponding to a noisy spectra pattern in the first plurality of seismic data transforms of the first plurality of windows of the seismic data;
obtain a machine learning model trained with historical seismic data comprising noiseless data and abnormal data;
input one or more eigenvalues of the first Hough tensors for new seismic data into the machine learning model to detect the first presence of noise in the seismic data; and
provide, responsive to detection of the first presence of noise in the seismic data, a notification to adjust a characteristic of the seismic survey to cause the new seismic data subsequent to the first seismic data to have a second presence of noise that is less than the first presence of noise, wherein the notification is generated to delay or pause performance of the seismic survey, thereby improving the quality of subsequently collected seismic data and providing higher quality images.

2. The system of claim 1 ,
wherein the data processing system is further configured to detect the first presence of noise in a shot interval corresponding to generation of the seismic wave by the source.

3. The system of claim 1 , wherein the data processing system is further configured to detect the first presence of noise in the seismic data within 30 seconds of generation of the seismic wave by the source.

4. The system of claim 1 , further comprising:
a seismic streamer located in an aqueous medium, wherein the seismic streamer comprises a plurality of seismic data acquisition units.

5. The system of claim 1 , wherein the sensor component comprises a hydrophone or a geophone.

6. The system of claim 1 , wherein the first plurality of seismic data transforms in the plurality of dimensions correspond to a 2-dimensional Fourier transform.

7. The system of claim 1 , wherein the first plurality of seismic data transforms in the plurality of dimensions correspond to a Tau-P transform.

8. The system of claim 1 , wherein the data processing system is further configured to:
receive, subsequent to provision of the notification to adjust the characteristic of the seismic survey to reduce noise in the subsequently detected seismic data, a second seismic data detected by the sensor component of the seismic data acquisition unit;
generate a second Hough tensors for a second plurality of seismic data transforms of a second plurality of windows of the second seismic data;
detect, based on a comparison of eigenvalue-eigenvector representation of the second Hough tensors with the historical data, an absence of the noise in the second seismic data; and
provide, responsive to detection of the absence of the noise in the second seismic data, an indication that an adjustment of the characteristic of the seismic survey to reduce noise was successful.

9. The system of claim 8 , wherein the data processing system is further configured to:
generate one or more images using seismic data collected subsequent to the detection of the absence of the noise in the second seismic data; and
provide, for display on a display device, the one or more images indicating a presence of subsurface lithological formations or hydrocarbon formations.

10. The system of claim 1 , wherein the data processing system is further configured to: detect, in real-time, the first presence of noise in the seismic data detected by the sensor component.

11. The system of claim 1 , wherein the data processing system is further configured to: apply a filter to remove predetermined frequencies from the seismic data; and generate the first Hough tensors for a plurality of 2-dimensional Fourier transforms of the first plurality of windows of the seismic data without the predetermined frequencies.

12. The system of claim 1 ,
wherein the data processing system is further configured to generate the first Hough tensors via a machine learning line detection technique.

13. The system of claim 1 , wherein the data processing system is further configured to:
generate a 1-dimensional Fourier transform of the seismic data; detect a spike in the 1-dimensional Fourier transform of the seismic data;
apply a weight to the one or more eigenvalues based on the spike to generate one or more weighted eigenvalues; and
display, on a display device, the one or more eigenvalues and the one or more weighted eigenvalues.

14. The system of claim 1 , wherein one or more eigenvalues of the canonical matrix comprise a first eigenvalues mapping the first Hough tensors to noiseless historical data and a second eigenvalues mapping the first Hough tensors to abnormal historical data.

15. A method of detecting and controlling noise in seismic surveys, comprising:
receiving, by a data processing system comprising memory and one or more processors, responsive to a seismic wave generated by a source, seismic data detected by a sensor component of a seismic data acquisition unit;
generating, by the data processing system, for a first plurality of windows of the seismic data, Hough tensors, wherein the Hough tensors are generated, for a first plurality of seismic data transforms in a plurality of dimensions;
detecting, based on a comparison of an eigenvector and eigenvalue of a canonical matrix of the Hough tensors with a historical eigenvector and eigenvalue of a historical canonical matrix of historical Hough tensors of historical seismic data, a first presence of noise in the seismic data, wherein one or more eigenvalues of the canonical matrix comprise at least a first eigenvalues mapping the Hough tensors to noiseless historical data, and at least a second eigenvalues mapping the Hough tensors to abnormal historical data;
obtain a machine learning model trained with historical seismic data comprising noiseless data and abnormal data;
input one or more eigenvalues of the Hough tensors for new seismic data into the machine learning model to detect the first presence of noise in the seismic data; and
providing, by the data processing system, responsive to detection of the first presence of noise in the seismic data, a notification to adjust a characteristic of the seismic survey to cause the new seismic data subsequent to the seismic data to have a second presence of noise that is less than the first presence of noise, wherein the notification is generated to delay or pause performance of the seismic survey, thereby improving the quality of subsequently collected seismic data and providing higher quality images.

16. The method of claim 15 , further comprising:
detecting, by the data processing system, the first presence of noise in real-time during operation of a seismic survey and within 6 seconds of receiving the first seismic data for the shot interval.

17. The method of claim 15 , wherein the sensor comp

Assignees

• Magseis Ff Llc

Inventors

• Gillott Graham

Classifications

• G01V1/345 Primary

  Visualisation of seismic data or attributes, e.g. in 3D cubes · CPC title

• G01V1/181

  Geophones · CPC title

• G01V1/186

  Hydrophones · CPC title

• G01V1/301

  for determining seismic cross-sections or geostructures · CPC title

• G01V1/375

  Correlating received seismic signals with the emitted source signal · CPC title