... Starting from the complex phase velocity, in this paper, we derive a system of 2nd order wave equations in 3D visco-acoustic TTI media that can be employed in Reverse Time Migration (RTM) to simultaneously compensate for phase and amplitude distortions. Unlike most available wave equations...

... The anisotropy widely exists in the subsurface media, and thus cannot be ignored during the seismic migration. The Gaussian beam migration is a promising technique for imaging the complex anisotropic structures. The anisotropic ray tracing equations based on phase velocity is employed...

... the accuracy claim of the method, even in the presence of reflection and transmission coefficients. reservoir characterization objective function acoustic wave modeling dispersion error optimization problem wavelength accuracy artificial intelligence eclectic matrix phase velocity velocity...

... joint estimation of VS and transversely isotropic parameters, which can provide near surface anisotropy for different applications. applied geoscience love-wave phase velocity receiver component dispersion curve anisotropic multimode upstream oil & gas subsurface sensitivity joint...

... The elastic wave propagation is coupled in VTI media. Different approximations are used to obtain single wave equation, such as acoustic approximation and weak anisotropic approximation. In this paper, we start from the exact elastic wave phase velocities in VTI media, and propose an approximate...

... velocities of Rayleigh and Love waves’ fundamental modes can be directly calculated from the 6C CCFs of a single pair of stations. Unlike traditional array-based surface wave methods that deliver some sort of average phase velocity among stations, the proposed approach gives the localized dispersion...

... to recover groundwater level variations. log analysis frequency phase velocity reservoir characterization upstream oil & gas applied geoscience us government groundwater level rayleigh wave phase velocity partial saturation effect aquifer state well logging tracking surficial aquifer...

... that in hydrocarbon reservoirs, where the pore space is saturated by two-phase fluids, capillary pressure and interference betweeen the fluid of the two phases induce additional velocity attenuation and dispersion of seismic waves. We present a Finite Element (FE) procedure to determine the phase velocities...

... wave reservoir characterization s-wave dispersion curve dissipation factor equation phase velocity petroleum engineering & geoscience expression example effective biot material upstream oil & gas exploration geophysicist 10 inhomogeneous wave effective biot material Dissipation...

... there is no analytical solution available. This case shows a decrease in the P-wave phase velocities and an increase in the dissipation factors, with respect to the previous case. Representations of the real an imaginary parts of the temperature illustrate the attenuation effects. Note: This paper was acceptedÂ...

... microtremor energy. Our field data application demonstrates that compared to conventional two-station analyses without consideration of noise heterogeneity, we can extract reliable phase velocity dispersion curves in wider frequency ranges. A number of dispersion curves between two-stations by our approach...

... steps: moveout (LMO) correction, the original seismic record can 1. Measuring the phase velocity of surface waves in the be divided into multiple subsets with a reasonable set of the original seismic record, then the linear moveout (LMO) time window and sliding length, and each subset contains...

... upstream oil & gas shale oil oil shale gas production heterogeneity procedure phase velocity exploration geophysicist 10 plane flow in porous media complex reservoir buenos aires simulation seg international exposition fracture facultad flow simulator permeability universidad...

...:15 PM Location: Poster Station 5 Presentation Type: Poster phase velocity receiver exploration geophysicist 10 granite frequency sandstone geophysics fundamental mode fault zone reservoir characterization mode surface wave surface-wave analysis seg international exposition source...

...: Wednesday, October 14, 2020 Session Start Time: 8:30 AM Presentation Time: 8:55 AM Location: 362C Presentation Type: Oral evolutionary algorithm phase velocity ms-swi method exploration geophysicist 10 artificial intelligence initial model scale inversion dispersion curve machine learning...

... intelligence phase velocity bm3d complex-valued optimization frequency attenuation reconstruction exploration geophysicist 10 reservoir characterization batch attenuation aghamiry seg international exposition attenuation model upstream oil & gas ir-wri iteration inversion operto...

... geophysics seg international exposition upstream oil & gas countermeasure phase velocity annual meeting closure error intersection vibroseis vector equation shwave line reservoir characterization underground structure section closure error problem seismic data closure error problem...

... characterization reverse time migration amplitude phase velocity optimization annual international meeting artificial intelligence reverse-time migration optimization term geophysics annual meeting equation References References Bickel , S. H. , and R. R. , Natarajan , 1985...

... ABSTRACT At present, it is one of the hot and challenging points in petroleum exploration and seismology that the problem of elastic wave propagation in fluid-filled fracture media and the use of anisotropic seismic response to detecting fractures. Phase velocity and group velocity is the main...

... ambient noise singapore phase velocity upstream oil & gas deep bedrock detection frequency inversion surface wave References References Anbazhagan , P. , and T. G. , Sitharam , 2009 , Spatial variability of the depth of weathered and engineering bedrock using multichannel...