Borehole acoustic full-waveform inversion
WebOct 11, 2024 · Full-waveform inversion (FWI) is a technique having the potential for building high-resolution elastic velocity models. We proposed to apply this technique to wireline monopole acoustic logging data to obtain the near wellbore formation velocity structures, which can be used in wellbore damage or fluid intrusion evaluation. A 2D FWI … WebSimultaneous Inversion (SI) is a pre-stack method that uses multiple offset or angle seismic sub-stacks and their associated wavelets as input; it generates P-impedance, S-impedance and density as outputs (although the density output resolution is …
Borehole acoustic full-waveform inversion
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WebFull-waveform inversion (FWI) is a technique having the potential for building high-resolution elastic velocity models. We proposed to apply this technique to wireline monopole acoustic logging data to obtain the near wellbore formation velocity structures, which … WebMar 6, 2024 · The quasi-elastic-wave equation uses a linearized acoustic-wave equation with shear modulus μ as a virtual source to correct the acoustic PP wavefield amplitudes toward elasticmore » Our waveform inversion method inverts for elastic parameters by minimizing the L2 norm of the difference between recorded and predicted PP reflections …
WebNov 1, 2024 · As a new inversion method, the full waveform inversion (FWI) method uses kinematics (travel time) information and dynamics (amplitude, phase) information to image complex models with high resolution. It has been widely used in inversion of the acoustic equation, elastic wave equation and viscoelastic wave equation (Liao and Mcmechan, … WebJan 1, 2024 · The P-wave velocity profile comparison between the inversion result (blue line) of elastic FWI and that (red line) of acoustic FWI using the same single-component data of SNR = 2 dB. The black and green lines represent the true and initial velocities, respectively. (a) x = 2.5 km and (b) x = 3.5 km.
WebMar 3, 2024 · Full-waveform inversion (FWI) is a technique that has the potential for building high-resolution elastic velocity models. We apply this technique to wireline monopole acoustic logging data to image the near-wellbore formation velocity … WebMay 15, 2024 · SGP Annual Research Update Series 2024 - 2024Title: Borehole acoustic full waveform inversionAuthors: Huaigu Tang, Arthur Cheng, Yunyue Elita Li, and Xinding...
WebNov 15, 2024 · Computational domain for the acoustic inversion problem. Acoustic recording devices are placed on the surface (\(\nabla \)) and record incoming acoustic waves reflected from geological structures emanating from an artificial source (\(*\)).The computational domain is embedded within a dampened boundary domain to emulate …
WebNov 11, 2024 · The estimated velocity using the localized sensitivity is strikingly close to the one obtained from independent waveform inversion using downhole sources and also to acoustic well log data at RA ... sim settlements 2 scrapWebThe team from LBNL is working on the stochastic formulation of the combined borehole sonic-electromagnetic inversion. Researchers currently are developing an inversion code to estimate porosity and … sim settlements 2 vit o maticWebOct 6, 2008 · Weiguang He, Romain Brossier, Ludovic Métivier, René-Édouard Plessix, Land seismic multiparameter full waveform inversion in elastic VTI media by simultaneously interpreting body waves and surface waves with an optimal transport based objective function, Geophysical Journal International, 10.1093/gji/ggz414, 219, 3, (1970 … sim settlements egret tours marina city planWebFull-waveform inversion (FWI) is a technique having the potential for building high-resolution elastic velocity models. We proposed to apply this technique to wireline monopole acoustic logging data to obtain the near wellbore formation velocity structures, which can be used in wellbore damage or fluid intrusion evaluation. A 2D FWI using monopole … rcpch officershttp://sgpnus.org/papers/SEG_2024/Huaigu_Borehole%20acoustic%20full-waveform%20inversion.pdf rcpch obesity guidelinesWebOct 13, 2024 · Full-waveform inversion (FWI) is a technique having the potential for building high-resolution elastic velocity models. We proposed to apply this technique to wireline monopole acoustic logging data to obtain the near wellbore formation velocity … rcpch past papersWebJan 1, 2011 · Jan 2011. Full Seismic Waveform Modelling and Inversion. pp.59-81. Andreas Fichtner. The spectral-element method is a high-order numerical method that allows us to solve the seismic wave equation ... rcpch offices