Imperial College London

ProfessorYanghuaWang

Faculty of EngineeringDepartment of Earth Science & Engineering

Principal of Resource Geophysics Academy and Director of CRG
 
 
 
//

Contact

 

+44 (0)20 7594 1171yanghua.wang Website

 
 
//

Location

 

2.40Royal School of MinesSouth Kensington Campus

//

Summary

 

Publications

Publication Type
Year
to

121 results found

Jamali J, Javaherian A, Wang Y, Ameri MJet al., 2021, The behavior of elastic moduli with fluid content in the VTI media, Journal of Petroleum Science and Engineering, ISSN: 0920-4105

For addressing the behavior of a reservoir with different fluid types, the Biot-Gassmann equation often is the base of the practical simulation. Despite the prevalence application of this equation with the isotropy conditions, the unforeseen errors always expose in simulation results because of the anisotropy state in reality. We investigated the anisotropy model with the integration of two analytical strategies using a three-component VSP data set. We obtained an initial anisotropy model in the region of acquired walkaway VSP using slowness polarization inversion, and updated the anisotropy model with the application of anisotropy ray-tracing and tomography. We applied a layer-stripping approach to the anisotropy model during raytracing to optimize the inversion. Given a computed geomechanical model and extracted rock properties of a carbonate reservoir, we developed the anisotropy Biot-Gassmann model, for finding the elastic moduli. We used the substitution strategy to generate the dynamic model of elastic moduli. We showed how the compressional modulus and rigidity change with the anisotropy model in different fluid content. We found that integration of slowness polarization and raytracing tomography increases the maneuverability to control the predicted anisotropy model and intensifies the convergence rate of the inverse problem. We observed that the isotropy assumption in modeling the elastic parameters makes around 8–10 % drift value in compressional modulus relevant to the reality, whereas rigidity showed reluctant behavior to fluid.

Journal article

Alsalmi H, Wang Y, 2021, Mask filtering to the Wigner-Ville distribution, GEOPHYSICS, Pages: 1-30, ISSN: 0016-8033

<jats:p> The Wigner-Ville distribution (WVD) is a high-resolution time-frequency spectral analysis method for non-stationary signals, and yet it suffers from cross-term interference among signal components. We proposed applying a masking filter directly to the WVD time-frequency spectrum to suppress the cross-term interference. Conventional methods for suppressing the interference include the smoothed-pseudo WVD (SP-WVD) method, which incorporates smooth filtering in both time and frequency directions. We exploited the SP-WVD spectrum as a reference to design the masking filter, and thus the mask filtered WVD (MF-WVD) procedure is data adaptive. The MF-WVD method preserves the high-resolution energy concentration in the spectrum portrayed by the standard WVD, while suppressing the cross-term interference cleanly like in the SP-WVD method. Applying the MF-WVD method to field 3D seismic data generates high-resolution spectral cubes for various frequencies, and these spectral cubes may be used intuitively for detecting reservoir-related characteristics. </jats:p>

Journal article

Wu D, Wang Y, Cao J, da Silva N, Yao Get al., 2021, Least-squares reverse-time migration with sparsity constraints, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 18, Pages: 304-316, ISSN: 1742-2132

Journal article

Izadian S, Aghazade K, Amini N, Wang Yet al., 2021, Semi-exact local absorbing boundary condition for seismic wave simulation, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 18, Pages: 62-73, ISSN: 1742-2132

Journal article

Wang Y, 2021, The W transform, GEOPHYSICS, Vol: 86, Pages: V31-V39, ISSN: 0016-8033

Journal article

Rosa DR, Santos JMC, Souza RM, Grana D, Schiozer DJ, Davolio A, Wang Yet al., 2020, Comparing different approaches of time-lapse seismic inversion, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 17, Pages: 929-939, ISSN: 1742-2132

Journal article

Duarte EF, da Costa CAN, de Araujo JM, Wang Y, Rao Yet al., 2020, Seismic shot-encoding schemes for waveform inversion, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 17, Pages: 906-913, ISSN: 1742-2132

Journal article

Wang Y, Liu X, Gao F, Rao Yet al., 2020, Robust vector median filtering with a structure-adaptive implementation, GEOPHYSICS, Vol: 85, Pages: V407-V414, ISSN: 0016-8033

Journal article

Wang R, Wang Y, Rao Y, 2020, Seismic reflectivity inversion using an L1-norm basis-pursuit method and GPU parallelisation, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 17, Pages: 776-782, ISSN: 1742-2132

Journal article

Li H, Gao R, Wang Y, 2020, Predicting the thickness of sand strata in a sand-shale interbed reservoir based on seismic facies analysis, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 17, Pages: 592-601, ISSN: 1742-2132

Journal article

Wang Y, Rao Y, 2020, Seismic, Waveform Modeling and Tomography, Encyclopedia of Solid Earth Geophysics, 2nd edition, Editors: Gupta, Publisher: Springer, Cham, ISBN: 978-3-030-10475-7

Tomography. A seismic inversion method to produce slicing image of the internal structures of an object, by recording seismic wavefield propagating through and scattered-refracted-reflected back from the object and observing the difference in the effects on the wave energy impinging on those structures.

Book chapter

He F, Rao Y, Wang W, Wang Yet al., 2020, Prediction of hydrocarbon reservoirs within coal-bearing formations, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 17, Pages: 484-492, ISSN: 1742-2132

Journal article

Gao F, Wang Y, 2020, Radiation pattern analyses for seismic multi-parameter inversion of HTI anisotropic media, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 17, Pages: 65-75, ISSN: 1742-2132

Journal article

Liu J, Wang Y, 2020, Seismic simultaneous inversion using a multidamped subspace method, GEOPHYSICS, Vol: 85, Pages: R1-R10, ISSN: 0016-8033

Journal article

Rao Y, Wang Y, 2020, Pore-pressure diffusion during water injection in fractured media, GEOPHYSICS, Vol: 85, Pages: MR51-MR56, ISSN: 0016-8033

Journal article

Wang Y, Rao Y, Xu D, 2020, Multichannel maximum-entropy method for the Wigner-Ville distribution, GEOPHYSICS, Vol: 85, Pages: V25-V31, ISSN: 0016-8033

Journal article

Wang Y, 2019, A constant-Q model for general viscoelastic media, GEOPHYSICAL JOURNAL INTERNATIONAL, Vol: 219, Pages: 1562-1567, ISSN: 0956-540X

Journal article

Liu Y, Xu T, Wang Y, Teng J, Badal J, Lan Het al., 2019, An efficient source wavefield reconstruction scheme using single boundary layer values for the spectral element method, EARTH AND PLANETARY PHYSICS, Vol: 3, Pages: 342-357, ISSN: 2096-3955

Journal article

Shi Y, Zhang W, Wang Y, 2019, Seismic elastic RTM with vector-wavefield decomposition, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 16, Pages: 509-524, ISSN: 1742-2132

Journal article

He C, Dong S, Wang Y, 2019, Lithospheric delamination and upwelling asthenosphere in the Longmenshan area: insight from teleseismic P-wave tomography, SCIENTIFIC REPORTS, Vol: 9, ISSN: 2045-2322

Journal article

Fang C, Pan B, Wang Y, Rao Y, Guo Y, Li Jet al., 2019, Pore-scale fluid distributions determined by nuclear magnetic resonance spectra of partially saturated sandstones, GEOPHYSICS, Vol: 84, Pages: MR107-MR114, ISSN: 0016-8033

Journal article

Rao Y, Wang Y, 2019, Dispersion and Stability Condition of Seismic Wave Simulation in TTI Media, PURE AND APPLIED GEOPHYSICS, Vol: 176, Pages: 1549-1559, ISSN: 0033-4553

Journal article

Rao Y, Wang Y, 2019, Stabilised inverse-Q filtering for seismic characterisation of carbonate reservoirs, JOURNAL OF GEOPHYSICS AND ENGINEERING, Vol: 16, Pages: 190-197, ISSN: 1742-2132

Journal article

Rao Y, Wang Y, Han D, 2019, Seismic Waveform Tomography With Simplified Restarting Scheme, IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, Vol: 16, Pages: 135-139, ISSN: 1545-598X

Journal article

Gao F, Wang Y, Wang Y, 2018, Waveform Tomography of Two-Dimensional Three-Component Seismic Data for HTI Anisotropic Media, PURE AND APPLIED GEOPHYSICS, Vol: 175, Pages: 4321-4342, ISSN: 0033-4553

Journal article

Liu X, Gao F, Zhang Y, Rao Y, Wang Yet al., 2018, Seismic resolution enhancement in shale-oil reservoirs, GEOPHYSICS, Vol: 83, Pages: B281-B287, ISSN: 0016-8033

Journal article

Chen S, Wang Y, 2018, Seismic Resolution Enhancement by Frequency-Dependent Wavelet Scaling, IEEE GEOSCIENCE AND REMOTE SENSING LETTERS, Vol: 15, Pages: 654-658, ISSN: 1545-598X

Journal article

Rao Y, Wang Y, 2018, Seismic waveform simulation for models with fluctuating interfaces, SCIENTIFIC REPORTS, Vol: 8, ISSN: 2045-2322

Journal article

Liu Y, Wang Y, 2017, Seismic characterization of a carbonate reservoir in Tarim Basin, GEOPHYSICS, Vol: 82, Pages: B177-B188, ISSN: 0016-8033

Journal article

Rao Y, Wang Y, 2017, Seismic waveform tomography with shot-encoding using a restarted L-BFGS algorithm, SCIENTIFIC REPORTS, Vol: 7, ISSN: 2045-2322

Journal article

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wlsprd.imperial.ac.uk:80/respub/WEB-INF/jsp/search-html.jsp Request URI: /respub/WEB-INF/jsp/search-html.jsp Query String: respub-action=search.html&id=00402159&limit=30&person=true