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Full-waveform Seismic Inversion at Reservoir Depths
Proceedings, 2012We apply 3D anisotropic acoustic full-waveform tomographic seismic inversion to a North Sea wide-angle OBC dataset, and demonstrate that our recovered velocity model is realistic within the chalk reservoir sequence to depths of up to 4000 m. Because we use predominantly wide-angle refracted arrivals in the inversion, we are able to undershoot and image
T. Nangoo +5 more
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Inversion of travel times and seismic waveforms
1987The use of gradient methods of optimization allows to solve large-sized least squares inverse problems iteratively. In travel time inversion, each iteration consists on a back-projection of the travel time residuals. In waveform inversion, each iteration consists on a back-propagation of the waveform residuals. This chapter reviews methods developed by
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Interpolating wavelet multiscale inversion for seismic waveform
6th International Conference on Signal Processing, 2002., 2003A method of interpolating wavelet multiscale inversion (IWMI) based on interpolating wavelet transform (IWT) is proposed for inverse seismic waveform. The problem is solved in multiresolution interpolating space rather than traditional physical space.
null Jian-Wei Ma, null Hui-Zhu Yang
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Full Waveform Inversion for Reflected Seismic Data
Proceedings, 2012Full waveform inversion has been successful in building high resolution velocity models for shallow layers. To achieve this, it requires refracted waves or low frequencies in the reflection/refraction data. To relax the dependence on low frequency reflections, we revisit full waveform inversion.
S. Xu +4 more
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Scaling full seismic waveform inversions
2017The main goal of this research study is to scale full seismic waveform inversions using the adjoint-state method to the data volumes that are nowadays available in seismology. Practical issues hinder the routine application of this, to a certain extent theoretically well understood, method.
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Evaluation of Anelastic Effects in Seismic Waveform Inversions
Proceedings, 2013The results of a synthetic study on anelastic effects in seismic full waveform inversions are presented. It is shown that the application of a pure acoustic waveform inversion algorithm does not yield satisfactory results when the data to be inverted are acquired in a viscoacoustic medium.
M.L. Vasmel +2 more
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2017
During a seismic experiment, mechanical waves are usually generated by various manmade sources. These waves propagate in the subsurface and are recorded at receivers. Modern seismic exploration methods analyze them to infer the mechanical properties of the subsurface; this is commonly referred as quantitative imaging.
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During a seismic experiment, mechanical waves are usually generated by various manmade sources. These waves propagate in the subsurface and are recorded at receivers. Modern seismic exploration methods analyze them to infer the mechanical properties of the subsurface; this is commonly referred as quantitative imaging.
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Constrained waveform inversion of seismic well data
2005In this paper, we have illustrated how to introduce in the inverse problem, constraints consistent with the least squares formalism (through covariance matrices) on both the data and the model space. The incorporation of all our a priori knowledge of the parameters and all statistical studies on data, allows not only the algorithmic stabilization of ...
Marwan Charara +2 more
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Robust inversion of seismic waveforms
SEG Technical Program Expanded Abstracts 1988, 1988Edward Crase +2 more
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