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W-13: Seismic Data Acquisition with Simultaneous Sources

Friday, 27 September
8:30 - 5:00 p.m.

Organizers: Christine Krohn, Adriana Citalali Ramirez, Raymond Abma, Josef Paffenholz
E-mail Contact: chris.e.krohn@exxonmobil.com
Through the support of the SEG Research Committee

We propose questions on seismic acquisition design for fuller wavefield sampling enabled by the advent of many continuous-recording channels and simultaneous-sourcing concepts. We invite workshop participants to bring 3 slides for discussion on the following questions. Please contact one of the organizers if you can make a 3-slide presentation.

  • How do we optimize the design to best meet survey objectives, including cost?
  • How do we evaluate the benefits of quality versus quantity of seismic data?  
  • How can computer modeling/design and uncertainty analysis be used to vet designs?
  • What is the optimal sourcing pattern –relative encoding and positioning in time and space?
  • How true are coherency and other assumptions in active source separation (deblending)?
  • How well can we separate sources?
  • How good is good enough separation for applications of time-lapse, AVO, FWI?
  • How many interfering sources can we practically separate and use?
  • How can we better utilize crew interference noise and prior shot noise?
  • Can we develop a better common vocabulary and nomenclature for this area?
Schedule

Session I: Simultaneous Sourcing for Today

8:30 a.m.

INTRODUCTION

 

8:35 a.m.

Simultaneous Source Shooting: Independent Simultaneous Sourcing

Ray Abma*, David Ellis, Nick Rose-Innes, Alan Ford, Herlinde Mannaerts-Drew, Jan Kommendal, and Peter Napier (BP)

9:05 a.m.

Blended Acquisition and De-blending Processing of 3D Seismic Data with Ocean Bottom Nodes

David Hays*, Ken Craft, Araz Mahdad (Fairfield Nodal) David Monk (Apache)

9:35 a.m.

Deblending of variable depth streamer simultaneous source data; field trial results

Margherita Maraschini*, Thomas Mensch, Gordon Poole, Damien Grenie, Kent Stevens (CGG)

10:05 a.m.

BREAK

 

10:20 a.m.

Simultaneous shooting for marine acquisition: is deblending always needed?

Nick Moldoveanu*, Carlos Espinoza, Craig Beasley (Schlumberger)


Discussion I: Practicalities
Format: a series of 3-slide presentations followed by discussion on following questions.

  • Question 1 – How do we optimize the design to best meet survey objectives, including cost?
  • Question 2 – How do we evaluate the benefits of quality versus quantity of seismic data?  
  • Question 3 – How can computer modeling/design and uncertainty analysis be used to vet designs?
  • Question 4 – What is the optimal sourcing pattern–relative encoding and positioning in time and space?

10:50 a.m.

INTRODUCTION TO DISCUSSION SESSION I

 
 

What can be learned from that simultaneous sources was tried to speed up wave equation migration but largely failed.

Christof Stork (Landmark Software)

 

Question 2

Craig Beasley (Schlumberger)
 

What is optimal sourcing pattern?

Rolf Baardman (PGS)
 

Question 3

Hugues Djikpesse (Schlumberger)
 

OPEN

  

12:00 p.m.

LUNCH

 


Session II: Simultaneous Sourcing for Tomorrow

1:30 p.m.

Dense shot-sampling via time-jittered marine sources

Felix J. Herrmann, Tim Lin*, and Haneet Wason (SLIM)

2:00 p.m.

A general framework for Separation and Reconstruction of Simultaneous Source Data via Rank Reduction Methods

M. D. Sacchi and Jinkun Chen (University of Alberta)

2:30 p.m.

BREAK

 


Discussion II: Separation and Semantics
Format: a series of 3-slide presentations followed by discussion on following questions.

  • Question 5 – How true are coherency and other assumptions in active source separation (deblending)?
  • Question 6 – How well can we separate sources?
  • Question 7 – How good is good enough separation for applications of time-lapse, AVO, FWI?
  • Question 8 – How many interfering sources can we practically separate and use?
  • Question 9 – How can we better utilize crew interference noise and prior shot noise?
  • Question 10 – Can we develop a better common vocabulary and nomenclature for this area?

2:45 p.m.

INTRODUCTION TO DISCUSSION SESSION II

  

 

 Deblending: Challenges and the road ahead

Araz Mahdad (Fairfield Nodal)

 

Question 6 & 7

Kent Stevens*, Gordon Poole, Margherita Maraschini, Thomas Mensch, Damien Grenie, and Risto Siliqi (CGG)

 

Question 6

Ray Abma (BP)

 

Multiples in deblending

Eric Vershuur (Delft)
 

OPEN

  


Summary and Future Outlook

4:00 p.m.

The End of Unblended Acquisition

Guus Berkhout (Delft)

4:30 p.m.

ADJOURN

 

 

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