... government reflection coefficient american association anisotropy society When identifying fluids in anisotropic reservoirs, the impact of medium anisotropy on fluid identification needs to be considered. At the same time, during seismic wave propagation, pore fluids can experience wave-induced...

... To examine potential correlations between wastewater injection and spatial-temporal distribution of upper crustal anisotropy, we conduct shear wave splitting analysis using local S waves recorded by six stations in the vicinity of the 2016 M5.1 earthquake. The event is generally considered...

... Knowing the intrinsic elastic anisotropy properties of the reservoir rocks in enhanced geothermal systems is important in stress field inversion and accurate determination of induced microseismic events. Here, we perform lab experiments to measure P- and S-wave velocities to determine...

... properties and anisotropy with pressure are delineated quantitatively, which are then simulated by rock physical model in order to analyze the anisotropic properties. The results show that the elastic and anisotropic properties are significantly affected by kerogen content and cracks. This study can provide...

... The objective of this research is to simulate and to study the electromagnetic (EM) response generated when performing hydraulic fracturing operations in an unconventional reservoir. This requires, to study the EM dynamic space-time evolution and to study the effect of the electrical anisotropy...

... Rocks containing vertical fractures in tilted fine layering can exhibit the characteristics of anisotropy with monoclinic symmetry. Here, we focus on fracture detection in monoclinic media consisting of a vertical set of fractures embedded in the TTI background medium. Under the assumption...

...- and qSV-wave equations to completely decouple the qP- and qSV-wave components in the TI media. Third, to describe the subsurface media’s attenuation and anisotropy characteristics, we incorporate the Kelvin-Voigt attenuation model and obtain the decoupled qP- and qSV-wave equations in the attenuated TI...

... This work aims to establish the most suitable seismic fracture characterization methodology for Colombian Middle Magdalena Valley (MMV) cretaceous formations by comparing interpretations from well image logs with various seismic anisotropy attributes obtained from azimuthal data. The workflow...

... Quantifying anisotropy assists various exploration and development efforts in the energy industry. One solution involves inverting flexural and Stoneley dispersion curves, where recorded and theoretical dispersions are compared to obtain vertically transverse isotropic (VTI) parameters. However...

... equation china government anisotropic media international geologist asia government media anisotropy accurate simulation propagation upstream oil & gas reservoir characterization approximation p-wave geophysics wavefield attenuation anisotropy accuracy geology geological...

... We present an approach for modelling the frequency-dependent seismic properties in periodic layered VTI media with penny-shaped cracks. We analyze the dispersion, attenuation and frequency-dependent anisotropy of seismic wave velocities, and investigate the effects of different parameters...

... azimuth anisotropy tsvankin effectiveness geologist asia government migration fracture geology reservoir characterization application perpendicular upstream oil & gas flatness fracture imaging orthotropic migration geophysics china government azimuthal anisotropy imaging...

..., the inclusion model can account for a broader spectrum of measured velocities and anisotropies. rock type reservoir characterization anisotropy structural geology reservoir geomechanics concentration upstream oil & gas porosity economic geology fracture exploration geophysicist applied...

... The nearly vertical strike-slip fault system is commonly developed in an exploration area in western China, which is a typical Orthorhombic medium. The obvious features of azimuthal anisotropy was observed on the OVT CIP gathers with TTI prestack depth migration imaging. In this paper, based...

... This work employs complex presalt carbonates from Santos Basin, Brazil, to address anisotropy. The data set comprises 8 plug-samples cored from a high-energy environment as predominantly bivalve grainstones and arborescent shrubs, presenting textural and mineralogical complexities as dissolution...

...) survey was designed to sample the wavefield along depth and with varying offset. These data are analyzed to determine intrinsic anisotropy for building a calibrated 1D vertical transverse isotropy (VTI) model, followed by further processing and analysis to determine the AVO response at the target zone...

...-reservoirs facies. Rock mechanics measurement from laboratory test and cross-dipole sonic measurements provide a unique opportunity to characterize anisotropy due to layering, stress and fractures. In addition, the elastic properties were obtained using a novel probabilistic inversion approach which allow...

... Explicit formulae are presented for anisotropic parameters for the orthorhombic case of a polar anisotropic body ( e.g. a shale) penetrated by a single set of vertical, rotationally variant fractures ( e.g. joints). upstream oil & gas expression anisotropy american association pa...

... for the technical reliability of PS-wave imaging in depth. An important goal is to establish a common-earth-model of velocity and anisotropy to provide inversion ready depth gathers for P- and S-wavefields (PS, S H , S V ). Final anisotropy analysis amplitude maps for each mode show potential sensitivity...

... international interpretation american association expanded abstract reservoir characterization exploration geophysicist crampin cloud cross-section dataset upstream oil & gas s-wave energy image2022-w16-05 applied geoscience equation society splitting anisotropy azimuth...