Results 91 to 100 of about 600,749 (229)

Propagator and wave-equation inversion for near-receiver material properties [PDF]

, 2004
Near-receiver material properties are required for the separation of the recorded wavefield into upgoing and downgoing P and S waves, and are also important for static time-shift corrections.
Trampert, J., Curtis, A.; id_orcid, van Vossen, R.   +2 more
core   +1 more source

Pre-stack seismic inversion based on model-constrained generative adversarial network

Frontiers in Earth Science
Pre-stack seismic inversion usually uses various traditional algorithms to estimate elastic parameters such as P-wave velocity, S-wave velocity, and density.
Guangzhi Zhang, Guangzhi Zhang, Guangzhi Zhang, Sirui Song, Sirui Song, Sirui Song, Haihang Zhang, Dekuan Chang, Dekuan Chang   +8 more
doaj   +1 more source

Subsonic near-surface P-velocity and low S-velocity observations using propagator inversion [PDF]

, 2005
Detailed knowledge of near-surface P- and S-wave velocities is important for processing and interpreting multicomponent land seismic data because (1) the entire wavefield passes through and is influenced by the near-surface soil conditions, (2) both ...
Andrew Curtis, Curtis, A.; id_orcid, Trampert, J., van Vossen, R., Robbert van Vossen, Jeannot Trampert   +5 more
core   +1 more source

Global crustal thickness from neural network inversion of surface wave data [PDF]

, 2007
We present a neural network approach to invert surface wave data for a global model of crustal thickness with corresponding uncertainties. We model the a posteriori probability distribution of Moho depth as a mixture of Gaussians and let the various ...
Andrew Curtis, Meier, U., Curtis, A.; id_orcid, Trampert, J., Ueli Meier, Jeannot Trampert   +5 more
core   +1 more source

Improved Seismic Imaging through Prestack Depth Migration using Synthetic Seismic Data [PDF]

, 2015
A necessary requirement for a reliable seismic depth imaging is to have an accurate estimation of the earth velocity model. Seismic depth imaging fundamentally consists of computation of two way travel time and downward extrapolation of the observed wave
Singh, Kumar Hemant, Mahadasu, Pradeep
core   +1 more source

Inversion for Geofluid Discrimination Based on Poroelasticity and AVO Inversion

Geofluids, 2019
Geofluid discrimination plays an important role in reservoir characterization and prospect identification. Compared with other fluid indicators, the effective pore-fluid bulk modulus is more sensitive to the property of fluid contained in reservoirs.
Lingqian Wang, Hui Zhou, Bo Yu, Yanxin Zhou, Wenling Liu, Yukun Tian   +5 more
doaj   +1 more source

Ray-based stochastic inversion of prestack seismic data for improved reservoir characterization [PDF]

, 2009
Trace inversion for reservoir parameters is affected by angle averaging of seismic data and wavelet distortion on the migration image. In an alternative approach to stochastic trace inversion, the data are inverted prestack before migration using 3D ...
Van der Burg, D. (author), Verdel, A. (author), Van der Burg, D., Verdel, A., Wapenaar, C.P.A. (author), Wapenaar, C.P.A.   +5 more
core   +2 more sources

Direct Prestack Inversion of the Formation Pressure Coefficient for Deepwater Overpressured Reservoirs

Journal of Marine Science and Engineering
Accurate prediction of overpressured formations in deepwater is important for drilling safety and reservoir evaluation. However, conventional two-step inversion workflows are affected by cumulative errors and parameter crosstalk, which limits their ...
Hao Chen, Handong Huang, Gang Cui, Jun Liao, Jiahui Peng, Yaning Wu   +5 more
doaj   +1 more source

Progress and direction of 3D seismic exploration in Qintong Sag of Subei Basin

Youqicang pingjia yu kaifa, 2023
Qintong Sag of Subei Basin has high abundance of oil and gas resources and great exploration potential, but the geological target has the complex characteristics of “thin, broken, small, scattered and hidden”.
LIU Ming, XUE Ye, LIU Tiantian, ZHAO Sucheng, LAN Jiada, SHI Mengjun, YANG Fan   +6 more
doaj  

Research on geophysical response analysis and prediction technology of geostress in the shale gas area of the southern Sichuan Basin

Frontiers in Energy Research
The exploration and development potential of shale gas reservoirs in the Sichuan Basin is enormous; however, it also faces difficulties such as complex structures, strong heterogeneity, and unclear geophysical response characteristics. Fine prediction of
Chang Wang, Chang Wang, Chang Wang, Cheng Yin, Xuewen Shi, Xuewen Shi, Dongjun Zhang, Dongjun Zhang, Maojie Liao, Maojie Liao, Ruhua Zhang, Ruhua Zhang, Ruhua Zhang   +12 more
doaj   +1 more source