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Keywords: inverse
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Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4098671
... correction operator. Thirdly, to eliminate the back-scattering noise, the inverse scattering imaging condition is utilized to further improve the imaging quality. We adopt the MIDA brain model to compare the morphological imaging of the FD-RTM and PS-RTM. The results demonstrate that compared with the FD...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 26–29, 2024
Paper Number: SEG-2024-4100476
... An inverse method that uses direct linear methods may be used to solve certain classes of problems expressible as Fredholm integral equations of the second kind. In the case of electromagnetic induction in a thin sheet, the method solves directly for the thin sheet resistance by synthesizing...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3910015
... We perform a semi-quantitative analysis of the amount of rebound of a reservoir initially depleted, exploiting some rather unique 4D seismic observations of “conventional” and “inverse” timeshifts at two sister wells, each producing from (almost) isolated compartments in the same reservoir. We...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3911479
... using inverse scattering imaging condition (ISIC) due to its ability to supress low wavenumber artifacts. The results demonstrate that the use of this methodology brings more reliable angle information and generates cleaner final stacked images for RTM. structural geology geological subdiscipline...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 27–September 1, 2023
Paper Number: SEG-2023-3908592
... Full Waveform Inversion (FWI) is a technique widely used in geophysics to obtain high-resolution subsurface velocity models from waveform seismic data. Due to its large computation cost, most flavors of FWI rely only on the computation of the gradient of the loss function to estimate the update...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3738348
... international equation reservoir characterization subsection american association schuster migration psf exploration geophysicist inverse society upstream oil & gas assumption hessian inverse energy 10 geophysics applied geoscience dataset figure 1 Deblurring migration images with point...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3740290
... Recent advances in seismic inverse scattering theory and inverse problems have allowed introduction of methods in the scattering physics into seismic inversion. We introduce a time-perturbation scattering theory for the time reflection and refraction of waves and show the application...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3745159
... deltas of the Lower Wilcox prograded under high stand conditions of sea level over a shallow wide shelf. River dominated wave and tide-influenced deltas on the inner shelf provided sandstone via hyperpycnal flows to the upper slopes. Muddy sediments with normal and inverse grading and low borrowing...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3745607
... reservoir characterization equation reinicke exploration geophysicist upstream oil & gas wapenaar applied geoscience annual international conference media dukalski inverse marchenko equation american association international matrix reversal abstract extended abstract...
Proceedings Papers

Paper presented at the SEG/AAPG International Meeting for Applied Geoscience & Energy, August 28–September 1, 2022
Paper Number: SEG-2022-3749861
... Recent studies on full-waveform inversion (FWI) show that extended-source formulations can make the inversion more immune to cycle-skipping compared to the classical formulation. This method, which is also called wavefield reconstruction inversion (WRI), first computes wavefields...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594201
...Prediction and removal of internal multiples under strong re ectors by using inverse scattering series algorithm Jinlong Yang, Sinopec Geophysical Research Institute SUMMARY for marine, land, and ocean bottom data (Matson and Weglein, 1996; Matson, 1997). Ram´ rez and Weglein (2005) discussed...
Proceedings Papers

Paper presented at the SEG/AAPG/SEPM First International Meeting for Applied Geoscience & Energy, September 26–October 1, 2021
Paper Number: SEG-2021-3594472
... forward spatially but time-reversed. We formulated a coupled first-order different equation system to calculate the dual solution and give a numerical example of a layered medium. We also point out the difference between the R/T of time-boundary for dual solution in inverse scattering theory...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3418133
... We study the relationship between the elastic FWI density gradient and the inverse scattering imaging condition. Due to the chain rule an elastic density gradient in different parameterization arrives at different forms. We show that in Vp-Vs-density parameterization the density gradient reduces...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, October 11–16, 2020
Paper Number: SEG-2020-3425829
... We report two factors to enhance the application of the inverse scattering series method for internal multiple prediction to field data. The 2D inverse scattering series algorithm assumes a 2D (line-source) data set acquired from 2D medium; however, the field data are better described as 3D...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215188
... ABSTRACT The linear sampling method is an exact inverse scattering technique that has primarily garnered attention from the applied mathematics community for its effective imaging capabilities given essentially no a priori information on the nature of the scattering target. Relatively recently...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3215153
.... Presentation Date: Wednesday, September 18, 2019 Session Start Time: 1:50 PM Presentation Start Time: 2:15 PM Location: 303B Presentation Type: Oral background medium lippmann-schwinger inversion acoustic medium seg international exposition inverse lippmann-schwinger equation background...
Proceedings Papers

Paper presented at the SEG International Exposition and Annual Meeting, September 15–20, 2019
Paper Number: SEG-2019-3216421
... Date: Monday, September 16, 2019 Session Start Time: 1:50 PM Presentation Start Time: 3:30 PM Location: 214C Presentation Type: Oral angle gather upstream oil & gas migration deconvolution imaging condition amplitude enhancement inverse resolution inversion cross-correlation...
Proceedings Papers

Paper presented at the 2018 SEG International Exposition and Annual Meeting, October 14–19, 2018
Paper Number: SEG-2018-2998334
... and inversion require only primaries as input. To image recorded primaries recorded multiples must be removed. To use a recorded multiple to find an approximate image of an unrecorded primary requires that unrecorded multiples be removed. All multiples, recorded multiples and unrecorded multiples need...

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