32nd Annual CREWES Sponsors Meeting

Online, December 3-5, 2020

This page contains all the videos that were presented during the meeting, as well as links to the corresponding reports. At this time these are available for members of sponsoring companies only (requires password).

  • Welcome and Introduction (Kris Innanen) video

Day 1 (December 3rd, 2020)

  • Session 1. Distributed Acoustic Sensing and Seismic Acquisition

CREWES continues to focus on fibreoptics (DAS) as a sensing technology to support monitoring. DAS, illuminated by standard but also new types of permanent and continuous sources, comprises a potentially very powerful approach to acquisition. In this session we summarize continuing efforts to use and invert DAS data, and innovative ways to deploy DAS fibre, and interpret and process the data.

  Talk 1. Field testing of multicomponent DAS sensing (Kevin Hall) video report
  Talk 2. Squid: an innovative new ground coupled source (Don Lawton) video report
  Talk 3. Least squares DAS-to-geophone transform (J. Monsegny) video report
  Talk 4. The role of fibre gauge length in FWI of DAS data (M. Eaid) video report
  Talk 5. 2D inversion of DAS surface wave data (L. Qu) video report
  Talk 6. A comparative study of different DAS vendors' data (J Monsegny) video report
  • Session 2. Time Lapse and Monitoring

This session ties the acquisition research and the method development discussed in the next sessions together to support monitoring. This is rapidly growing into one of the primary applications of our geophysics, and refinement of methods to be effectively and efficiently applied is a critical task.

  Talk 7. Time-lapse VSP results from the CaMI.FRS (B. Kolkman-Quinn) video report
  Talk 8. FWI TL monitoring of CO2 injection at CaMI (N. Amundaray) video report
  Talk 9. MCMC-based time-lapse FWI (X. Fu) video report
  Talk 10. Rock physics properties with global optimization methods (Q. Hu) video report
  • Session 3. Inversion and Processing

Amplitude inversion and imaging/processing have both been the subjects of intensive work in 2020. The increasingly detailed use of reflection strengths to determine reservoir properties, and the link between HPC and blending have been particularly emphasized.

  Talk 11. Full wavefield migration in the frequency-wavenumber domain (S. Huang) video report
  Talk 12. Inversion for indicators of interconnected / aligned cracks (H. Chen) video report
  Talk 13. Application of stereotomography to the Hussar dataset (B. Law) video report
  Talk 14. HPC methods for HR Radon transform and deblending (K. Zhuang) video report
  Talk 15. Deblending in common receiver and common angle gathers (Z. Su) video report

Day 2 (December 4th, 2020)

  • Session 4. Full Waveform Inversion

In this session we summarize our efforts in developing FWI for the reservoir, for monitoring of production, injection, storage; this requires high resolution, multiparameter subsurface models to be inferred, and for confusion between those parameters and source locations and signatures to be managed. It also requires us adapt and grow our ability to incorporate prior information and constraints.

  Talk 16. A multigrid approach for time domain FWI (D. Trad) video report
  Talk 17. Elastic FWI with rock physics constraints (Q. Hu) video report
  Talk 18. A tunneling approach to regularized full waveform inversion (S. Keating) video report
  Talk 19. FWI model space coordinate system design based on data misfit (K. Innanen) video report
  Talk 20. Acoustic full waveform inversion using blended data (H. Liu) video report
  Talk 21. Source-model simultaneous FWI (S. Keating) video report
  Talk 22. Incorporating a prior information in full waveform inversion (D. Li) video report
  • Session 5. Machine Learning and Data Science

The CREWES Data Science initiative, led by Daniel Trad and Marcelo Guarido, has made important progress in several areas, including wave simulation, modeling, and inversion. This includes advances in supervised and unsupervised method development, and the grey area between them. The team has also been involved in several machine learning challenges and competitions in 2020. We end the session with a special presentation by Brian Russell on unsupervised classification.

  Talk 23. CREWES solutions for machine learning competitions in 2020 (M.Guarido) video report
  Talk 24. Deep learning for 3D fault detection in virtual reality visualization (A. Fathalian) video report
  Talk 25. VTI/TTI full waveform inversion within theory guided neural networks (T. Zhang) video report
  Talk 26. Physics-guided DL for seismic inversion: hybrid training and uncertainty (J. Sun) video report
  Talk 27. Experiments on constructing seismic data using GANs (Z. Niu) video report
  Talk 28. Physics-guided NN for velocity calibration using microseismic data (H. Zhang) video report
  Talk 29. Deep learning for DAS-microseismic source estimation (M. Eaid) video report
  Talk 30. Unsupervised seismic facies classification using K-means and GMM (B. Russell) video report

Day 3 (December 5th, 2020)

This course is a growth and extension of courses the group has put on in recent years, both after the Sponsors' Meeting and for various sponsor companies. Some new features: it uses tools which are entirely online, and so does not require any downloading of apps on the participants' side. With many in the geophysical community becoming expert in the area, the course now assumes a basic comfort level with machine learning, and goes a little deeper.

Short Course: Developing Data Science Solutions to Geophysical Challenges course videos syllabus