Interpreting correlations in stress‐dependent permeability, porosity, and compressibility of rocks: A viewpoint from finite strain theory

International Journal for Numerical and Analytical Methods in Geomechanics, Journal Year: 2024, Volume and Issue: 48(8), P. 2000 - 2019

Published: March 2, 2024

Abstract Characteristics of stress‐dependent properties rocks are commonly described by empirical laws. It is crucial to establish a universal law that connects rock with stress. The present study focuses on exploring the correlations among permeability, porosity, and compressibility observed in experiments. To achieve this, we propose novel finite strain‐based dual‐component (FS‐DC) model, grounded strain theory within framework continuum mechanics. FS‐DC model decomposes original problem into matrix micro‐pores/cracks components. deformation gradient tensor utilized derive constitutive relations. One novelties variables calculated current configuration, contrast reference configuration used small theory. has only few number parameters, each specific physical interpretations. can be reduced existing models appropriate simplifications. Then, performance examined against experimental data, including compressibility, volumetric storage. proves variations these effectively proposed model. Further analysis reveals effect pores/cracks parameters. validity across broad range pressures. results show at high confining pressures (300 MPa) differ from those under relatively low (200 MPa). This disparity attributed inelastic behaviors micro‐structure, wherein skeleton undergoes permanent breakage.

Language: Английский

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A novel physics-informed deep learning strategy with local time-updating discrete scheme for multi-dimensional forward and inverse consolidation problems

Computer Methods in Applied Mechanics and Engineering, Journal Year: 2024, Volume and Issue: 421, P. 116819 - 116819

Published: Feb. 1, 2024

Language: Английский

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Characteristics of poroelastic deformation and dissipation of heat and pore pressure in fluid-saturated porous strata

Computers and Geotechnics, Journal Year: 2024, Volume and Issue: 167, P. 106046 - 106046

Published: Jan. 3, 2024

Language: Английский

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Estimation of hydraulic conductivity by the modified Kozeny–Carman equation considering the derivation principle of the original equation

Journal of Hydrology, Journal Year: 2023, Volume and Issue: 621, P. 129658 - 129658

Published: May 16, 2023

Language: Английский

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FEM Simulation of Fault Reactivation Induced with Hydraulic Fracturing in the Shangluo Region of Sichuan Province

Energies, Journal Year: 2024, Volume and Issue: 17(7), P. 1614 - 1614

Published: March 28, 2024

Hydraulic fracturing operations possess the capacity to induce reactivation of faults, increasing risk fault slip and seismic activity. In this study, a coupled poroelastic model is established characterize distribution movement fluids within rock formations in Shangluo region Sichuan province, China. The effect hydraulic projects on variations pore pressure Coulomb effective stress high-permeability analyzed. potential fault-slip mechanism investigated. results show that plays different roles for fluid movement, including barrier, transport channel, diversion which related injection–production schemes. addition, injection leads high probability reactivation. We find time rate can result larger distances. production scenarios influence mechanism, resulting normal or reverse fault. However, arrangement wells around effectively reduce

Language: Английский

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Dynamic Fluid Diffusion and Inrush Hazards of Fluid-Solid Interaction within Mesoscale Sandstone Based on Nucleus Growth Algorithm

Published: Jan. 1, 2024

Language: Английский

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