Ajinkya Kadu bio photo

Ajinkya Kadu

Graduate Student
Utrecht University
Utrecht, The Netherlands.

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Reconstruction of Salt-Bodies in Seismic Full-Waveform Inversion

The interior of the earth can be imaged using seismic waves by solving a non-linear inverse problem. Such images are the main tool for locating oil and gas reservoirs in geologically complex areas. Of special interest are subsurface salt bodies, as reservoirs are often found next to or underneath them. Resolving such salt bodies is challenging and new techniques are needed to obtain better images of the structures beneath the salt. We aim to develop such techniques by including prior information in the reconstruction; salt bodies are continuous objects with (known) constant properties. The reconstruction of such objects is the subject of discrete tomography, and effective algorithms have been developed for linear inverse problems in tomography. Generalizing these techniques to non-linear problems, we can obtain more accurate estimates of the shape of the salt bodies and the properties of the earth layers beneath them.

The Project is funded by Industrial Collaboration of the Foundation for Fundamental Research on Matter (NWO-FOM) and Shell. It is a part of Industrial Partnership Program (IPP) ‘Computational Sciences for Energy Research.’

Research Interests:

  1. Non-linear inverse problems
  2. Regularization
  3. Level-set methods
  4. Seismic Full-Waveform inversion
  5. Dimensionality Reduction
  6. Meta-Heuristic Optimization

Journal Publications

  1. Ajinkya Kadu, Tristan van Leeuwen, Wim Mulder
    Salt Reconstruction in Full Waveform Inversion with a Parametric Level-Set Method
    IEEE Transactions on Computational Imaging (TCI), 2017.

Conference Proceedings

  1. Ajinkya Kadu, Tristan van Leeuwen, K. Joost Batenburg
    A parametric level-set method for partially discrete tomography
    International Conference on Discrete Geometry for Computer Imagery (DGCI), 2017.

  2. Ajinkya Kadu*, Wim Mulder, Tristan van Leeuwen
    Parametric Level-Set Full-Waveform Inversion in the Presence of Salt-Bodies
    Society of Exploration Geophysics (SEG) Annual Meeting, 2017.

  3. Ajinkya Kadu, Tristan van Leeuwen, Wim Mulder
    A parametric level-set approach for seismic full-waveform inversion
    Society of Exploration Geophysics (SEG) Technical Program Expanded Abstracts, 2016.

News Articles

  1. Tristan van Leeuwen, Ajinkya Kadu, Wim Mulder
    Geometric Imaging for Subsurface Salt Bodies
    European Research Consortium Informatics & Mathematics (ERCIM) News
    For many decades, seismic studies have been providing useful images of subsurface layers and formations. The need for more accurate characterization of complex geological structures from increasingly large data volumes requires advanced mathematical techniques and high performance algorithms.

Activities - Conferences, Workshop, etc

  1. Houston Imaging Sciences Symposium, Houston, TX, USA - October 2 & 3, 2017
  2. SEG Annual Meeting, Houston, TX, USA - Sep 24 to 29, 2017
  3. 20th International Conference on Discrete Geometry for Computer Imagery, Vienna, Austria - Sep 19 to 21, 2017
  4. SIAM Conference on Mathematical and Computational Issues in Geosciences, Erlangen, Germany - Sep 11 to 14, 2017
  5. Bayesian and Nonlinear Inverse Problems Workshop, Lorentz Center, Leiden, Netherlands - Aug 28 to Sep 1, 2017
  6. SIAM Workshop on Parameter Space Dimension Reduction, Pittsburgh, PA, USA - July 9 & 10, 2017
  7. SIAM Annual Meeting, Pittsburgh, PA, USA - July 10 to 14, 2017
  8. NDNS+ Workshop, Twente, Netherlands - June 12 & 13, 2017
  9. NDNS+ PhD Days 2017, Lunteren, Netherlands
  10. Utrecht SIAM Student Chapter talk, Utrecht, Netherlands
  11. INdAM MATHTECH Workshop on Biomedical Imaging 2017, Rome, Italy
  12. Biweekly Tomomeeting, Computational Imaging Group, Centrum Wiskunde Informatica, Amsterdam, Netherlands
  13. SIGMA Conference, CIRM Marseille, France
  14. SEG Annual Meeting 2016, Dallas, Texas
  15. Computational Sciences for Future Energy Conference 2016, Utrecht, Netherlands
  16. Forty-First Woudschoten Conference 2016, Zeist, Netherlands
  17. Conference on Multiscale Inverse Problem 2016, Loka Brunn, Sweden
  18. NDNS Workshop 2016, Enschede, Netherlands
  19. Mini-Symposium on Seismic Imaging 2016, Delft, Netherlands
  20. SLIM Seismic Seminar 2016, Vancouver, Canada
  21. Fortieth Woudschoten Conference 2015, Zeist, Netherlands
  22. Summer School on Inverse Problems 2015, Munster, Germany

Upcoming Events and Conferences

Here is a list of all the courses I have taken, both during graduate and undergraduate studies.