Removing noise from seismic data obtained from towed seismic sensors

1. A method comprising:

obtaining different sets of data provided by seismic sensors located on a streamer shared in common, each of the sets of data being associated with a different spatial sampling interval; and

processing the different sets of data on a machine to generate a signal indicative of a seismic event detected by the set of towed seismic sensors, the processing including using the different spatial sampling intervals to at least partially eliminate noise from the signal, wherein

one of the data sets contains data associated with noise in a first frequency band;

another one of the data sets contains data associated with noise in a second frequency band different from the first frequency band; and

the processing the different sets of data to generate the signal comprises:

filtering said one of the data sets to remove content associated with the first frequency band to produce a first filtered set of data:

filtering said another one of the data sets to remove content associated with the second frequency band to produce a second filtered set of data; and

combining the first and second filtered sets of data to generate a set of data indicative of the signal.

2. The method of claim 1 , wherein the seismic sensors comprise geophone sensors.

3. The method of claim 1 , further comprising:

filtering the data sets to remove the noise.

4. The method of claim 1 , wherein the noise comprises one of vibration noise, flow induced noise and bulge waves.

5. The method of claim 1 , wherein one of the spatial sampling intervals is not an integer multiple of any of the other spatial sampling intervals.

6. A system comprising:

an interface to receive different sets of data provided by seismic sensors located on a streamer shared in common, the data sets being associated with different spatial sampling intervals; and

a processor to generate a signal indicative of a seismic event that is detected by the set of seismic sensors and use the different spatial sampling intervals to at least partially eliminate noise from the signal, the processor being adapted to:

filter one of the data sets to remove content associated with a first frequency band to produce a first filtered set of data;

filter another one of the data sets to remove content associated with a second frequency band different from the first frequency band to produce a second filtered set of data; and

combine the first and second filtered sets of data to generate a set of data indicative of the signal.

7. The system of claim 6 , wherein the noise comprises one of vibration noise, flow induced noise and bulge waves.

8. The system of claim 6 , wherein the processor is adapted to filter the data sets to remove the noise.

9. The system of claim 6 , wherein

said one of the data sets contains data associated with noise in the first frequency band, and

said another one of the data sets contains data associated with noise in the second frequency band different from the first frequency band.

10. The system of claim 6 , wherein one of the spatial sampling intervals is not an integer multiple of any of the other spatial sampling intervals.

11. An article comprising a computer accessible storage medium to store instructions that when executed by a processor-based system cause the processor-based system to:

obtain different sets of data provided by seismic sensors located on a streamer shared in common, each of the sets of data being associated with a different spatial sampling interval;

process the different sets of data to generate a signal indicative of a seismic event detected by the set of towed seismic sensors;

use the different spatial sampling intervals to at least partially eliminate noise from the Signal;

filter one of the data sets to remove content associated with a first frequency band to produce a first filtered set of data;

filter another one of the data sets to remove content associated with a second frequency band different from the first frequency band to produce a second filtered set of data; and

combine the first and second filtered sets of data to generate a set of data indicative of the signal.

12. The article of claim 11 , wherein the noise comprises one of vibration noise, flow induced noise and bulge waves.

13. The article of claim 11 , the storage medium storing instructions that when executed by the processor-based system cause the processor-based system to:

filter the data sets to remove the noise.

14. The article of claim 11 , wherein

said one of the data sets contains data associated with noise in the first frequency band, and

said another one of the data sets contains data associated with noise in the second frequency band.

15. The article of claim 11 , wherein one of the spatial sampling intervals is not an integer multiple of any of the other spatial sampling intervals.

16. A method comprising:

obtaining different sets of data provided by seismic sensors located on a streamer shared in common, each of the sets of data being associated with a different spatial sampling interval; and

on a machine to generate interval; and

processing the different sets of data on a machine, the processing comprising:

filtering one of the data sets according to first filtering criteria;

filtering another one of the data sets according to second filtering criteria different from the first filtering criteria; and

combining results of the filtering of the said one of the data sets and said another one of the data sets to generate a set of data indicative of a seismic event.

17. The method of claim 16 , wherein the acts of filtering said one of the data sets and said another one of the data sets comprise removing noise from the signal.

18. The method of claim 17 , wherein the noise comprises one of vibration noise, flow induced noise and bulge waves.

19. The method of claim 16 , wherein one of the spatial sampling intervals is not an integer multiple of any of the other spatial sampling intervals.

20. A system comprising:

an interface to receive different sets of data provided by seismic sensors located on a streamer shared in common, the data sets being associated with different spatial sampling intervals; and

a processor to:

filter one of the data sets according to a first filtering criteria;

filter another one of the data sets according to a second filtering criteria different than the first filtering criteria; and

combine results of the filtering of said one of the data sets and said another one of the data sets to generate a set of data indicative of a seismic event.

21. The system of claim 20 , wherein the noise comprises one of vibration noise, flow induced noise and bulge waves.