Reflection and Transmission of Plane Elastic Waves at an Interface Between Two Double-Porosity Media: Effect of Local Fluid Flow

Wang, Enjiang; Carcione, José M.; Ba, Jing; Liu, Yang

doi:10.1007/s10712-019-09572-6

Cited by 37 publications

(7 citation statements)

References 42 publications

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“…(the potential functions of the transmitted waves in Ω II are similar to those of the incident P wave). In the preceding equations, p m are the horizontal wavenumbers given by Wang et al (2020aWang et al ( , 2021)…”

Section: Zoeppritz Equationsmentioning

confidence: 99%

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Amplitude-variation-with-offset in thermoelastic media

Hou

Carcione

2023

GEOPHYSICS

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Temperature is an important factor for evaluating the seismic response of deep reservoirs. We develop an amplitude variation with offset (AVO) approximation based on the Lord-Shulman (LS) thermoelasticity theory. The model predicts two compressional (P and T) waves (the second is a thermal mode) and a shear (S) wave. The T mode is due to the coupling between the elastic and heat equations. In the thermoelastic case, the approximation is more accurate than in the elastic case. Its accuracy is verified by comparison with the exact equations calculated in terms of potential functions. We examine two reservoir models with high temperatures and compute synthetic seismograms that illustrate the reliability of the approximation. Moreover, we consider real data to build a model, and show that the approximate equation not only simplifies the calculations, but is accurate enough and can be used to evaluate the temperature-dependent elastic properties, providing a basis for further application of the thermoelasticity theory, such as geothermal exploration, thermal-enhanced oil recovery, and ultra-deep oil and gas resources subject to high temperatures.

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Section: Zoeppritz Equationsmentioning

confidence: 99%

“…It is the consequence of imposing the continuity of normal stress and displacement (velocity). Following Carcione (2014) and Wang et al (2020aWang et al ( , 2021, we obtain the averaged energy intensity…”

Section: Avo Approximation 92mentioning

confidence: 99%

Amplitude-variation-with-offset in thermoelastic media

Hou

Carcione

2023

GEOPHYSICS

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“…In the above research on barrier isolation, the foundation is often simplified as a single and uniform elastic medium. However, due to the influence of geological structure and stress history, natural soil typically exhibits irregular layered distribution in space [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31]. Gao et al [17] established a layered foundation model with wave barrier plates and analyzed the effects of upper soft and lower hard soil layers and upper hard and lower soft soil layers on wave barrier plates.…”

Section: Introductionmentioning

confidence: 99%

Propagation Behavior of P1-Wave Passing through Fluid-Saturated Porous Continuous Barrier in Layered Saturated Soil

Xu,

Li,

Kang

et al. 2024

Buildings

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The fluid-saturated porous continuous barrier has a better vibration isolation effect than the single-phase solid continuous barrier, and layer-forming saturated soils will have an impact on the vibration isolation effect of the barriers due to their irregular layer-forming distribution. Based on Biot’s theory of saturated porous media and Snell’s law, a dynamic model of a fluid-saturated porous continuous barrier in layered saturated soil is established in this study. By introducing the potential function and using the continuous boundary condition of the interface between the saturated soil and the barrier, the analytical solution of the inverse transmission amplitude ratio of a P1-wave passing through the fluid-saturated porous continuous barrier in stratified saturated soil is obtained. The rationality of the proposed method is verified by comparing the solution of the P-wave model at the interface between the elastic medium and the saturated coarse particle interlayer. The differences in the propagation characteristics of fluid-saturated porous continuous barriers in layered saturated soils, homogeneous saturated soils, and layered single-phase soils are analyzed via numerical examples, and the influence of changes in the physical and mechanical parameters of the fluid-saturated porous continuous barriers on the reflectance amplitude ratios under the conditions of a layered saturated soil foundation are also analyzed. The results show that the presence of fluid in the stratified saturated soil model changes the trend of the reflection amplitude ratio with the incidence angle. The reflection amplitude ratio of the P2-wave and the SV-wave increases first and then decreases with the increase in the incident angle, while the reflection amplitude ratio of P1-wave decreases first and then increases. Barrier thickness and porosity change the energy distribution relationship at the interface; a relatively thicker barrier thickness and a higher porosity would result in a higher amplitude of barrier reflections.

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“…Chen et al (2015) quantitatively calculated the gas saturation based on the dispersion inversion using stacked seismic data. Wang et al (2019) investigated the problem of reflection and transmission of plane elastic waves at an interface between two double-porosity media.…”

Section: Introductionmentioning

confidence: 99%

Rock Physical Modeling and Seismic Dispersion Attribute Inversion for the Characterization of a Tight Gas Sandstone Reservoir

et al. 2021

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Gas identification using seismic data is challenging for tight gas reservoirs with low porosity and permeability due to the complicated poroelastic behaviors of tight sandstone. In this study, the Chapman theory was used to simulate the dispersion and attenuation caused by the squirt flow of fluids in the complex pore spaces, which are assumed to consist of high aspect-ratio pores (stiff pores) and low aspect-ratio microcracks (soft pores). The rock physics modeling revealed that as the gas saturation varies, P-wave velocity dispersion and attenuation occurs at seismic frequencies, and it tends to move to high frequencies as the gas saturation increases. The velocity dispersion of the tight gas sandstone causes a frequency-dependent contrast in the P-wave impedance between the tight sandstone and the overlying mudstone, which consequently leads to frequency-dependent incidence reflection coefficients across the interface. In the synthetic seismic AVO modeling conducted by integrating the rock physics model and the propagator matrix method, the variations in the amplitudes and phases of the PP reflections can be observed for various gas saturations. The tests of the frequency-dependent AVO inversion of these synthetic data revealed that the magnitude of the inverted P-wave dispersion attribute can be used to indicate gas saturation in tight sandstone reservoirs. The applications of the frequency-dependent AVO inversion to the field pre-stacked seismic data revealed that the obtained P-wave dispersion attribute is positively correlated with the gas production from the pay zone at the well locations. Thus, the methods of the rock physics modeling and the frequency-dependent AVO inversion conducted in this study have good potential for the evaluation of the gas saturation in tight gas sandstone reservoirs.

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Reflection and Transmission of Plane Elastic Waves at an Interface Between Two Double-Porosity Media: Effect of Local Fluid Flow

Cited by 37 publications

References 42 publications

Amplitude-variation-with-offset in thermoelastic media

Amplitude-variation-with-offset in thermoelastic media

Propagation Behavior of P1-Wave Passing through Fluid-Saturated Porous Continuous Barrier in Layered Saturated Soil

Rock Physical Modeling and Seismic Dispersion Attribute Inversion for the Characterization of a Tight Gas Sandstone Reservoir

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