Journal ArticleDOI
Experimental study on the anisotropy of the effective stress coefficient of sandstone under true triaxial stress
TLDR
In this article, the anisotropic characteristics of the effective stress coefficient for sandstone under different true triaxial stress and pore pressure conditions were investigated, and the results showed that effective stress coefficients exhibited anisotropy due to the different principal strains in three directions and the annessotropy of pore structure, and it is closely linked with the pore fluid flowing through highly compressible clay aggregates.About:
This article is published in Journal of Natural Gas Science and Engineering.The article was published on 2020-12-01. It has received 22 citations till now. The article focuses on the topics: Effective stress & Pore water pressure.read more
Citations
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Journal ArticleDOI
Experimental study on the mechanical and failure behaviors of deep rock subjected to true triaxial stress: A review
TL;DR: In this paper , a review of the development of true triaxial testing apparatus and corresponding research progress on rock deformation, strength, failure mode, brittleness, and energy as well as the 3D volumetric fracturing (dynamic disaster) properties of deep rocks under true Triaxial stress is presented.
Journal ArticleDOI
Effective stress effect and slippage effect of gas migration in deep coal reservoirs
TL;DR: In this article , coal seepage experiments under variable bulk stress and pore pressure paths are performed to investigate the slippage effect and effective stress effect during gas migration in deep coal seams.
Journal ArticleDOI
Fracture mechanism of tight sandstone under high and complex 3-D stress compression: Insights from acoustic emission
TL;DR: In this article , failure experiments of low porosity sandstone specimens under various 3D stress paths are performed, and the mechanical responses (e.g., stress-strain behavior, strength, fracture pattern, and acoustic emission characteristics) are analyzed.
Journal ArticleDOI
Mechanical response of permeability evolution to anisotropic structure of reservoir rock under true triaxial stress path
TL;DR: In this article, the true triaxial experiments of sandstone, shale and coal with their own unique structural characteristics under the identical mean principal stress (p) and generalized shear stress (q) were performed.
Journal ArticleDOI
Fracture mechanism of tight sandstone under high and complex 3-D stress compression: Insights from acoustic emission
TL;DR: In this article, failure experiments of low porosity sandstone specimens under various 3D stress paths are performed, and the mechanical responses (e.g., stress-strain behavior, strength, fracture pattern, and acoustic emission characteristics) are analyzed.
References
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Journal ArticleDOI
General Theory of Three‐Dimensional Consolidation
TL;DR: In this article, the number of physical constants necessary to determine the properties of the soil is derived along with the general equations for the prediction of settlements and stresses in three-dimensional problems.
Journal ArticleDOI
An exact effective stress law for elastic deformation of rock with fluids
Amos Nur,J. D. Byerlee +1 more
TL;DR: In this paper, the exact expressions for the effective stress and the pressure that causes elastic strain of material with pore fluids were derived assuming only that Hook's law is valid, assuming that porosity does not depend directly on porosity, but when pores vanish the effective pressure equals the confining pressure Pc, because then K=Ks.
Journal ArticleDOI
Modelling permeability for coal reservoirs: A review of analytical models and testing data
Zhejun Pan,Luke D. Connell +1 more
TL;DR: A review of coal permeability and the approaches to modelling its behavior can be found in this paper, where the authors identify some potential areas for future work, as well as some potential directions for future research.
Journal ArticleDOI
Volumetric strain associated with methane desorption and its impact on coalbed gas production from deep coal seams
Xiaojun Cui,R. Marc Bustin +1 more
TL;DR: In this article, the authors investigated quantitatively the effects of reservoir pressure and sorption-induced volumetric strain on coal-seam permeability with constraints from the adsorption isotherm and associated volumetrized strain measured on a Cretaceous Mesaverde Group coal (Piceance basin) and derived a stressdependent permeability model.
Book
Compressibility of Sandstones
TL;DR: In this paper, the authors define the notion of poroelasticity in compressive rock compressibility and stress, and present a method for measuring the pore structure of porous rock compresses.