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Unlocking the near surface zone in seismic recordings: A paradigm shift in three-dimensional elastic modelling for full waveform inversion and non-linear laboratory experimentation

English title Unlocking the near surface zone in seismic recordings: A paradigm shift in three-dimensional elastic modelling for full waveform inversion and non-linear laboratory experimentation
Applicant Robertsson Johan O. A.
Number 144303
Funding scheme Project funding
Research institution Institut für Geophysik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Geophysics
Start/End 01.01.2013 - 31.12.2015
Approved amount 366'032.00
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Keywords (11)

boundary conditions; full-waveform seismic inversion; high performance computing; finite-difference methods ; wave propagation; modelling of seismic wave propagation; nuclear waste disposal; multicomponent seismic data ; physical modelling; dedicated computational platforms ; near-surface zone

Lay Summary (English)

Lead
Lay summary

We propose new complete methods for modelling seismic experiments and inverting the seismic data for sub-surface properties and mapping sub-surface structures. The novel methodology substantially reduces computational costs in scenarios where we need to repeatedly resynthesize the seismic response after model alterations (cost of recomputations are very small compared to the full upfront computations). The modelling methodology changes the nature of the required computations and will be particularly suited to run on dedicated (application-specific) computer architectures. We therefore want to exploit the new modelling engine for inversion applications and foresee significant reductions in computational cost by a factor of 10-100, depending on the application. Such a significant advance will facilitate our goal of carrying out inversion of surface seismic data while fully accounting for the physics of wave propagation in elastic media – something that is prohibitively computationally expensive today.  The new methodology will be directly applicable for resolving long-standing problems in hydrocarbon and mineral exploration, groundwater and hydrothermal reservoir characterization, CO2 sequestration and earthquake seismology.

Direct link to Lay Summary Last update: 21.02.2013

Responsible applicant and co-applicants

Employees

Publications

Publication
Broadband cloaking and holography with exact boundary conditions
van Manen Dirk-Jan, Vasmel Marlies, Greenhalgh Stewart, Robertsson Johan O. A. (2015), Broadband cloaking and holography with exact boundary conditions, in JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 137(6), 415-421.
Finite-difference modelling of wavefield constituents
Robertsson Johan, van Manen Dirk-Jan, Schmelzbach Cedric, van Renterghem Cederic, Amundsen Lasse (2015), Finite-difference modelling of wavefield constituents, in Geophysical Journal International, 203, 1334-1342.
Exact Boundary Conditions and High Performance Computing
Broggini Filippo, Vasmel Marlies, Robertsson Johan (2014), Exact Boundary Conditions and High Performance Computing.
Prediction of wavefields by injecting multicomponent seismic measurements into modeling
Amundsen Lasse, Robertsson Johan, Vasmel Marlies, Westerdahl Harald (2014), Prediction of wavefields by injecting multicomponent seismic measurements into modeling, in Annual Meeting of Society of Exploration Geophysicists, Denver.
A new solution to eliminate free surface related multiples in multicomponent streamer recordings
Vasmel M., Robertsson J. O A, Amundsen L. (2013), A new solution to eliminate free surface related multiples in multicomponent streamer recordings, in 76th European Association of Geoscientists and Engineers Conference and Exhibition 2014: Experience , 1906-1910.
Immersive experimentation in a wave propagation laboratory
Robertsson Johan, van Manen Dirk-Jan, Curtis Andrew, Vasmel Marlies (2013), Immersive experimentation in a wave propagation laboratory, in Annual Meeting of Society of Exploration Geophysists, Las Vegas.
Immersive experimentation in a wave propagation laboratory
Vasmel Marlies, Vasmel Marlies, Vasmel Marlies, Robertsson Johan O A, Robertsson Johan O A, Robertsson Johan O A, Van Manen Dirk Jan, Van Manen Dirk Jan, Curtis Andrew (2013), Immersive experimentation in a wave propagation laboratory, in Journal of the Acoustical Society of America, 134(6), EL492-EL498.

Collaboration

Group / person Country
Types of collaboration
Prof. Andrew Curtis/School of Geosciences/University of Edinburgh Great Britain and Northern Ireland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
Mr. Adrian Alexander France (Europe)
- in-depth/constructive exchanges on approaches, methods or results

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
GPU Technology Conference Talk given at a conference Developing a system for real-time numerical simulation during physical experiments in a wave propagation laboratory 03.11.2014 San Diego, United States of America Robertsson Johan O. A.; Vasmel Maria Louise;
Annual meeting of Society of Exploration Geophysicists Talk given at a conference Prediction of wavefields by injecting multicomponent seismic measurements into modeling 06.10.2014 Denver, United States of America Vasmel Maria Louise; Robertsson Johan O. A.;
76th EAGE Conference, Amsterdam Talk given at a conference A new solution to eliminate free surface related multiples in multicomponent streamer recordings 16.06.2014 Amsterdam, Netherlands Vasmel Maria Louise; Robertsson Johan O. A.;
Platform for Advanced Scientific Computing (PASC) Conference Poster Exact Boundary Conditions and High Performance Computing 02.06.2014 Zurich, Switzerland Broggini Filippo; Vasmel Maria Louise; Robertsson Johan O. A.;
Platform for Advanced Scientific Computing (PASC) Conference Talk given at a conference Immersive experimentation in a wave propagation laboratory 02.06.2014 Zurich, Switzerland Vasmel Maria Louise; Robertsson Johan O. A.; Broggini Filippo;
83rd SEG Conference Talk given at a conference Immersive experimentation in a wave propagation laboratory 04.11.2013 Houston, United States of America Robertsson Johan O. A.; Vasmel Maria Louise;
SIAM Talk given at a conference Exact boundary conditions 03.06.2013 Padua, Italy Robertsson Johan O. A.; Vasmel Maria Louise;


Associated projects

Number Title Start Funding scheme
178342 Exhibition: Waves across the scales 01.04.2018 Agora
162360 Unlocking the near surface zone in seismic recordings: A paradigm shift in three-dimensional elastic modelling for full waveform inversion and non-linear laboratory experimentation 01.01.2016 Project funding
157684 A wave propagation laboratory for immersive experimentation 01.12.2014 R'EQUIP

Abstract

The Principal Investigator (PI), Prof. Johan Robertsson, is a new Ordinary Professor in the Institute of Geophysics at ETH-Zürich. The PI took up office on February 1, 2012, and is building on the successful professorship of Prof. Alan Green, redirecting the research in the group towards both exploration and environmental applications. This proposal represents the first step (on a 3-4 year time frame) in a long-term research programme on a 10-12 year time scale. We expect significant progress to be made towards the overall goal of the research programme following securing funding and implementing the current proposal.A fundamental goal of the research in the ETH Exploration and Environmental Geophysics (EEG) Group is to better understand the Earth’s shallow near-surface structures (upper 10’s to 100’s of meters) and the effects that they have on seismic data. The near surface zone is characterized by strong variations in elastic properties, such as at the free surface, transitions from dry to fluid to gas saturated media, and the sharp discontinuities between different sediments, soils and rock types. The research in the group focuses on developing new multicomponent acquisition methods for near-surface characterization and wave-equation based elastic modelling and inversion methods that fully explain the recorded data.We propose new complete (in terms of the physics of wave propagation) methods for modelling seismic wave propagation and full waveform inversion (FWI) of seismic data. The novel methodology is based on the application of new boundary conditions and the generation of Green’s functions through surface integrals of cross-correlations (seismic interferometry). The new modelling methodology should substantially reduce computational costs in scenarios where we need to recompute the seismic response after model alterations (cost of recomputations are very small compared to the full upfront computations). The modelling methodology changes the nature of the required computations (small scale finite-difference computations in combination with pure cross-correlation operations) and will be particularly suited to run on dedicated (application-specific) computer architectures. We therefore want to exploit the new modelling engine for FWI applications and foresee significant reductions in computational cost by a factor of 10-100, depending on the application. Such a significant advance will facilitate our goal of carrying out elastic FWI of surface seismic data - something that is prohibitively computationally expensive today. The FWI methodology will be applied to a 3D three-component (3C) field data set that will be acquired over the next 24 months. In contrast to many other land data sets, pilot 2D 3C data from the area are of remarkably high quality. In combination with the shallow target of interest, these data should be ideally suited for pioneering the application of the new FWI methodology and identifying particularly important aspects of acquisition geometry and key arrivals (reflected and diffracted signals) in the data. Moreover, the new elastic FWI methodology will also be directly applicable for resolving long-standing problems in hydrocarbon and mineral exploration, groundwater and hydrothermal reservoir characterization, CO2 sequestration and earthquake seismology.Finally, not all aspects of wave propagation in the near surface can be explained by linear elastic wave propagation. We propose linking physical modelling experiments with numerical simulations in a “wave propagation laboratory” to obtain a better understanding of effects such as receiver coupling and non-linear source effects.
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