System and method to acquire ultra-long offset seismic data for full waveform inversion (FWI) using unmanned marine vehicle (UMV)

• US 10,281,602 B2
• Filed: 06/18/2015
• Issued: 05/07/2019
• Est. Priority Date: 06/19/2014
• Status: Active Grant

• Current Assignee: WesternGeco LLC (Schlumberger NV)
• Original Assignee: WesternGeco LLC (Schlumberger NV)
• Inventors: Moldoveanu, Nicolae, Vigh, Denes, Kapoor, Surrinder, Pai, Sudhir
• Primary Examiner(s): Breier, Krystine E
• Application Number:
  US15/312,677
• Publication Number:
  US 20170205520A1
• Time in Patent Office: 1,419 Days
• CPC Class Codes: G01S 19/14 specially adapted for specific applications
• CPC Class Codes: G01S 5/18 using ultrasonic, sonic, or infrasonic waves
• CPC Class Codes: G01V 1/189 Combinations of different types of receiving elements
• CPC Class Codes: G01V 1/3808 Seismic data acquisition, e.g. survey design
• CPC Class Codes: G01V 1/3843 Deployment of seismic devices, e.g. of streamers equipment for marine deployment in general B63B
• CPC Class Codes: G01V 1/3852 to the seabed
• CPC Class Codes: G01V 2210/1427 Sea bed
• CPC Class Codes: G01V 2210/165 Wide azimuth
• CPC Class Codes: G01V 2210/167 Very long offset
• CPC Class Codes: G01V 2210/56 De-ghosting; Reverberation compensation

Abstract

A system and method for acquiring seismic streamer data is provided. Embodiments may include performing a marine seismic survey using an unmanned marine vessel having a power source configured to drive and provide propulsion to the unmanned marine vessel. Embodiments may further include acquiring one or more of long and ultra-long seismic survey data using a multi-dimensional seismic sensor array coupled with the unmanned marine vessel and providing the seismic survey data as a reduced data set that includes long and ultra long offsets.

Claims

1. A system for acquiring seismic streamer data during a seismic streamer survey, comprising:

an unmanned marine vessel having a power source configured to drive and provide propulsion to the unmanned marine vessel;

a multi-dimensional seismic sensor array coupled with the unmanned marine vessel, wherein the multi-dimensional seismic sensor array is configured to acquire ultra-long seismic survey data, wherein ultra-long seismic survey data includes data having an offset greater than 20 km; and

a float associated with the unmanned marine vessel including a global positioning system (“

GPS”

) receiver and a recording system configured to store and transmit the seismic survey data for a full waveform inversion (“

FWI”

).

2. The system of claim 1, wherein the unmanned marine vessel is a wave-glider.

3. The system of claim 1, wherein the multi-dimensional seismic sensor array comprises sensors selected from a group consisting of one or more hydrophones, one or more micro-electro-mechanical sensor (MEMS) accelerometers, one or more geophones, one or more pressure gradient sensors, and one or more inclinometers.

4. The system of claim 1, wherein the multi-dimensional seismic sensor array is coupled with at least one of a sensor package or a streamer associated with the unmanned marine vessel.

5. The system of claim 1, wherein the unmanned marine vessel is configured to perform at least one of a narrow-azimuth streamer acquisition, a wide-azimuth streamer acquisition, a full-azimuth streamer acquisition, and a full-azimuth dual coil streamer acquisition.

6. The system of claim 1, wherein the unmanned marine vessel is configured to perform at least one of a stationary, dynamic, or hybrid deployment.

7. The system of claim 1, wherein the unmanned marine vessel is an ocean bottom node.

8. The system of claim 7, wherein the ocean bottom node includes at least one of a pressure sensor, vertical geophone, horizontal geophone, recording system and one or more accelerometers.

9. The system of claim 8, wherein the ocean bottom node includes one or more accelerometers configured to measure the acceleration in a plurality of directions.

10. A method for acquiring seismic streamer data during a seismic streamer survey, comprising:

performing a marine seismic survey using an unmanned marine vessel having a power source configured to drive and provide propulsion to the unmanned marine vessel;

acquiring ultra-long offsets seismic survey data using a multi-dimensional seismic sensor array coupled with the unmanned marine vessel, wherein ultra-long seismic survey data includes data having an offset greater than 20 km; and

providing the seismic survey data for a full waveform inversion (“

FWI”

) as a reduced data set that includes ultra long offsets.

11. The method of claim 10, wherein the unmanned marine vessel is at least one of a wave-glider and an ocean bottom node.

12. The method of claim 10, wherein the multi-dimensional seismic sensor array comprises sensors selected from a group consisting of one or more hydrophones, one or more micro-electro-mechanical sensor (MEMS) accelerometers, one or more geophones, one or more pressure gradient sensors, and one or more inclinometers.

13. The method of claim 10, wherein the unmanned marine vessel includes a float having a global positioning system (“

GPS”

) receiver and a recording system configured to store and transmit the seismic survey data.

14. The method of claim 10, wherein the multi-dimensional seismic sensor array is coupled with at least one of a sensor package or a streamer associated with the unmanned marine vessel.

15. The method of claim 10, wherein performing a marine seismic survey includes performing at least one of a narrow-azimuth streamer acquisition, a wide-azimuth streamer acquisition, a full-azimuth streamer acquisition, and a full-azimuth dual coil streamer acquisition.

16. The method of claim 13, wherein transmitting the seismic survey data includes storing and transmitting seismic data for at least one of diving wave tomography, Kirchhoff type tomography, wave equation tomography, and Reverse Time Migration angle gathers.

17. The method of claim 16, further comprising:

processing the seismic survey data to perform a receiver deghosting operation using a pressure first order gradients.

18. The method of claim 10, wherein performing a marine seismic survey includes performing the marine seismic survey using a plurality of unmanned marine vessels.

19. An Ocean Bottom Node for acquiring seismic streamer data comprising:

a housing; and

a multi-dimensional seismic sensor array coupled with the Ocean Bottom Node, wherein the multi-dimensional seismic sensor array is configured to acquire ultra-long seismic survey data, wherein ultra-long seismic survey data includes data having an offset greater than 20 km, wherein the multi-dimensional sensor array includes at least one of a pressure sensor, a vertical geophone, a horizontal geophone, a recording system, and one or more accelerometers configured to measure the acceleration of particle velocity in a plurality of directions.