CWP 2018 Research Statement  

The Center for Wave Phenomena (CWP) collaborates with the petroleum industry, government agencies, and academic institutions in conducting leading research broadly focused on exploration seismology, including 3D seismic wave propagation, imaging, inversion, and time-lapse monitoring. Founded in 1983, CWP combines mathematical and physical rigor with computational sophistication to address a wide range of data-driven topics. Our cultural and intellectual diversity and broad research interests strengthen the program and ensure that our students and visitors have the opportunity to choose and pursue industry relevant research projects in which they thrive. This unique experience is made possible by financial support from and collaboration with sponsors.

What significant oil and gas related challenges is CWP aiming to solve?

CWP remains committed to continuing our strong applied research program in 
3D seismic modeling, imaging and inversion for complex marine and land geological environments using realistic heterogeneous elastic, anisotropic, and attenuative models.  In addition, recent economic trends in the oil and gas industry are presenting not just new challenges, but also new opportunities for researchers in the exploration seismic community. Consequently, the CWP research portfolio is evolving in directions that position us at the forefront of addressing important emerging challenges in exploration seismology and geophysics more broadly:

  • Exploration and exploitation of unconventional reservoirs including application of seismic methods to identify “sweet spots” for optimally designed drilling and to monitor hydraulic reservoir stimulation.
  • Real-time 3D seismic data acquisition, processing, and interpretation, including land geophone/seismometers and distributed acoustic sensing (DAS) acquisition.
  • Time-lapse monitoring of hydrocarbon production and injection activities, hydraulic fracturing, and reservoir compaction using borehole, surface and seabed seismic data as well as space-based observation.
  • Automated quantitative seismic interpretation with uncertainty quantification.

 

What tools will CWP develop to address these challenges?

Successfully addressing these topics over the next couple of years requires the development of a suite of analytic and computational tools that extend our traditional research strengths in new and complementary directions:

  • Elastic anisotropic waveform inversion for high-resolution reservoir characterization (with emphasis on unconventional plays) and model building.
  • Methodologies for high-quality dense seismic acquisition using single and multi-fiber DAS, interconnected sensor networks, and autonomous vehicles.
  • Geophysical applications of compressive sensing, including sparse and optimized 3D acquisition design, full-wavefield reconstruction including 5D interpolation, imaging and inversion.
  • Novel approaches to 3D and 4D multiphysics/multiparameter inversion, using geological and petrophysical constraints.
  • Novel applications of Marchenko imaging and interferometry theory in complex geological environments.
  • Physics-based machine deep learning and data mining technologies.
  • A state-of-the-art HPC CPU/GPU toolbox of CWP codes to support geophysical research and education.

CWP is committed to advancing the state of knowledge in applied seismology in a rapidly changing economic and technological environment, and to maintaining a close partnership with industry sponsors.

2017 Project Review Meeting

Agenda

Presentations:

Aaron Prunty – Connecting smooth dynamic warping and the memory effect-reduced
Alex Jia – Making Marchenko imaging work with field data and the bumpy road to 3D
Alicia (Johnson) Arias – Autonomous GPR acquisition and diffraction imaging
Antoine Guitton – Preconditioned LSTRM with matching filters
Colton Kohnke – Local wavefield tomography
Daniel Rocha – 3D acoustic least-squares reverse time migration using the energy norm -reduced
Daniel Rocha – Elastic least-squaresreverse time migration using the energy norm
Iga Pawelec – Quantitative estimation of uncertainty in seismic imaging -reduced
Ilya Tsvankin – Estimation of fracture parameters using elastic FWI
Ivan Lim Chen Ning – High resolution multicomponent distributed acoustic sensing -reduced
Ivan Lim Chen Ning – Multicomponent imaging with DAS -reduced
Jack Li – Time-dependent material properties and thermodynamics -reduced
Lucas Almeida – Reducing interpolation artifacts using reweighted analysis inversion
Nishant Kamath – Full-waveform inversion for reservoir characterization – a synthetic study
Oscar Jarillo Michel – Waveform inversion for microseismic velocity analysis and event location in VTI media
Paul Sava – Seismic orbital laser vibrometer
Qifan Liu – Stacking velocity tomography in tilted orthorhombic media
Roel Snieder – Damaging and healing of earth materials as a multi-scale phenomenon -reduced
Thomas Rapstine – Airborne seismic acquisition using stereo vision
Tong Bai – Waveform inversion and time-reversal imaging in attenuative TI media
Vladimir Li – Acoustic VTI wavefield tomography of P-wave surface and VSP data
Yogesh Arora – Analysis of diffractions in dip angle gathers for transversely isotropic media
Yuting Duan – Elastic least squares reverse time migration – a case study

Archived meeting presentations coming soon.

Research Reports

2017:

CWP-897 “Model-based redatuming of seismic data: an inverse filter approach”, Planes, et al
CWP-895 “Elastic least-squares reverse-time migration using the energy norm”, Rocha/Sava
CWP-894 “3D acoustic least-squares reverse-time migration using the energy norm”, Rocha, et al
CWP-893 “Airborne seismic monitoring using stereo vision”, Rapstine/Sava
CWP-892 “Fundamental concepts on statistical tilt correlations”, Prunty/Snieder
CWP-891 “High-resolution multicomponent distributed acoustic sensing”, Lim Chen Ning/Sava
CWP-890 “Inversion gradients for acoustic VTI wavefield tomography”, Li, et al
CWP-889 “Full-waveform inversion for reservoir characterization: A synthetic study”, Kamath, et al
CWP-888 “Subsalt Marchenko imaging: A Gulf of Mexico example”, Jia, et al
CWP-887 “Waveform inversion for microseismic velocity analysis and event location in VTI media”, Jarillo Michel/Tsvankin
CWP-886 “Sparse Q-compensation in the time domain with the hyperbolic penalty function”, Guitton/Claerbout
CWP-885 “Preconditioned 3D Least-Squares RTM with Non-Stationary Matching Filters”, Guitton
CWP-884 “Statistical identification of faults in 3D seismic volumes using a machine learning approach”, Guitton, et al
CWP-883 “Waveform inversion of synthetic reflection data for VTI attenuation parameters”, Bai, et al
CWP-882 “Analysis of diffractions in dip-angle gathers for transversely isotropic media”, Arora/Tsvankin

2016:

CWP-877 “Contactless seismic acquisition using stereo vision”, Rapstine/Sava
CWP-876 “Multicomponent Distributed Acoustic Sensing”, Lim Chen Ning/Sava
CWP-875 “Seismic shear waves as Foucault pendulum”, Snieder, et al
CWP-874 “The time dependence of rock healing as a universal relaxation process”, Snieder, et al
CWP-873 “Sparse log-domain deconvolution with offset: a Gulf of Mexico example”, Guitton
CWP-872 “Comparison of sparsity-constrained regularization methods for denoising and interpolation”, Almeida, et al
CWP-871 “Computing focusing functions for model-based redatuming: an inverse filter approach”, Planes/Snieder
CWP-870 ” Beyond Marchenko – Obtaining virtual receivers and virtual sources in the subsurface”, Singh/Snieder
CWP-869 “Imaging the model through wave equations”, Diaz Pantin, et al
CWP-868 “Extended imaging, deconvolution, and two-way wavefields: a comparison”, Diaz Pantin, et al
CWP-867 “Strategies for imaging with Marchenko-retrieved Green’s functions”, Singh/Snieder
CWP-866 “3D angle decomposition for elastic reverse time migration”, Duan/Sava
CWP-865 “Elastic least-squares reverse time migration”, Duan, et al
CWP-864 “Passive wavefield imaging using the energy norm”, Rocha, et al
CWP-863 “Anisotropic elastic wavefield imaging using the energy norm”, Rocha, et al
CWP-862 “Full-waveform inversion with reflected waves for 2D VTI media”, Pattnaik, et al
CWP-861 “Waveform inversion for attenuation estimation in anisotropic media”, Bai/Tsvankin
CWP-860 “Anisotropic waveform inversion for microseismic velocity analysis and event location”, Jarillo/Tsvankin
CWP-859 “Feasibility of waveform inversion in acoustic orthorhombic media”, Wang/Tsvankin
CWP-858 “Gradient computation for VTI acoustic wavefield tomography”, Li, et al
CWP-857 “Full-waveform inversion in a VTI elastic Earth: a parameterization and crosstalk study”, Guitton/Alkhalifah
CWP-856 “Elastic FWI for VTI media: A synthetic parameterization study”, Kamath, et al
CWP-852R “3D seismic image processing for subsurface modeling”, Wu
CWP-851R “Simultaneous multiple well-seismic ties using flattened synthetic and real seismograms”, Wu/Caumon
CWP-850R “Methods to compute salt likelihoods and extract salt boundaries from 3D seismic images”, Wu
CWP-849R “Strategies for imaging with Marchenko-retrieved Green’s functions”, Singh/Snieder
CWP-847R “Beyond Marchenko – Obtaining virtual receivers and virtual sources in the subsurface”, Singh/Snieder

More archived publications coming soon.