Systems and methods for wireless data acquisition in seismic monitoring systems

Patent metadata

Field	Value
Publication number	US-10209381-B2
Application number	US-201515119224-A
Country	US
Kind code	B2
Filing date	Feb 17, 2015
Priority date	Feb 19, 2014
Publication date	Feb 19, 2019
Grant date	Feb 19, 2019

Abstract

Systems and methods for wireless data acquisition in seismic monitoring systems are disclosed. The method includes obtaining a signal table for an emitted seismic signal, receiving seismic signal data from a receiver configured to transform seismic signals into seismic signal data, and storing the seismic signal data on a storage system. The method also includes determining a time span for the seismic signal data and generating a reduced data set based on the seismic signal data, the signal table, and the time span.

First claim

What is claimed is:

1. A method for seismic data acquisition performed by a collection node during a seismic survey of a subsurface geological formation, the method comprising:
obtaining a signal table for an emitted seismic signal;
receiving seismic signal data from a receiver configured to transform seismic signals emerging from the subsurface geological structure into seismic signal data;
storing the seismic signal data on a storage system;
determining a time span for the seismic signal data; and
generating a reduced data set based on the seismic signal data, the signal table, and the time span, wherein the generating includes:
generating frequency-domain data by applying a Fourier transformation to the seismic signal data;
determining an emitted frequency based on the signal table and the time span; and
selecting an amplitude and phase from the frequency-domain data, the amplitude and phase corresponding to the emitted frequency.

2. The method of claim 1 , further comprising:
storing the reduced data set on the storage system;
determining a data transmission time;
determining whether the data transmission time has occurred; and
in response to determining that the data transmission time has occurred, transmitting the reduced data set.

3. The method of claim 2 , wherein storing the reduced data set comprises merging the reduced data set with other data on the storage system.

4. The method of claim 2 , wherein transmitting the reduced data set occurs in real time or near-real time.

5. The method of claim 2 , wherein the reduced data set is transmitted via a wireless link.

6. The method of claim 5 , wherein the wireless link comprises a link in a mesh network.

7. The method of claim 1 , further comprising using the reduced data set to generate an image of the subsurface geological structure, the image being useable to determine presence of oil and/or gas in the subsurface geological structure.

8. A seismic data acquisition system for performing a seismic survey of a subsurface geological formation, the seismic data acquisition system comprising:
a receiver configured to detect seismic signals emerging from the subsurface geological structure and to transform the seismic signals into seismic signal data;
a storage system, and
a collection node connected to the receiver and the storage system and having a processor and a memory communicatively coupled to the processor, wherein instructions stored in the memory, when executed by the processor, cause the processor to:
obtain a signal table for an emitted seismic signal;
receive the seismic signal data from the receiver;
store the seismic signal data on the storage system;
determine a time span for the seismic signal data; and
generate a reduced data set based on the seismic signal data, the signal table, and the time span,

wherein for generating the reduced data set, the processor performs:
generating frequency-domain data by applying a Fourier transformation to the seismic signal data;
determining an emitted frequency based on the signal table and the time span; and
selecting an amplitude and phase from the frequency-domain data, the amplitude and phase corresponding to the emitted frequency.

9. The system of claim 8 , the instructions, when executed by the processor, further causing the processor to:
store the reduced data set on the storage system;
determine a data transmission time;
determine whether the data transmission time has occurred; and
in response to determining that the data transmission time has occurred, transmit the reduced data set.

10. The system of claim 9 , wherein storing the reduced data set comprises merging the reduced data set with other data on the storage system.

11. The system of claim 9 , wherein the reduced data set is transmitted via a wireless link.

12. The system of claim 9 , wherein transmitting the reduced data set occurs in real time or near-real time.

13. A non-transitory computer-readable medium, comprising instructions that, when executed by a processor, cause the processor to
obtain a signal table for an emitted seismic signal;
receive seismic signal data from a receiver configured to transform seismic signals emerging from the subsurface geological structure into seismic signal data;
store the seismic signal data on a storage system;
determine a time span for the seismic signal data; and generate a reduced data set based on the seismic signal data, the signal table, and the time span,
wherein for generating the reduced data set, the processor performs:
generating frequency-domain data by applying a Fourier transformation to the seismic signal data;
determining an emitted frequency based on the signal table and the time span; and
selecting an amplitude and phase from the frequency-domain data, the amplitude and phase corresponding to the emitted frequency.

14. The non-transitory computer-readable medium of claim 13 , the instructions, when executed by the processor, further causing the processor to:
store the reduced data set on the storage system;
determine a data transmission time;
determine whether the data transmission time has occurred; and
in response to determining that the data transmission time has occurred, transmit the reduced data set.

15. The non-transitory computer-readable medium of claim 14 , wherein storing the reduced data set comprises merging the reduced data set with other data on the storage system.

16. The non-transitory computer-readable medium of claim 14 , wherein the reduced data set is transmitted via a wireless link.

17. The non-transitory computer-readable medium of claim 14 , wherein transmitting the reduced data set occurs in real time or near-real time.

Assignees

• Cgg Services Sa
• Cgg Services Sas

Inventors

• Forgues Eric
• Maxwell Peter
• Jurok Jason
• Cotton Julien

Classifications

• H04W4/38

  for collecting sensor information · CPC title

• H04W4/60

  Subscription-based services using application servers or record carriers, e.g. SIM application toolkits · CPC title

• G01V1/223

  Radioseismic systems · CPC title

• H04W84/18

  Self-organising networks, e.g. ad-hoc networks or sensor networks · CPC title

• G01V1/247

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