Compact Shear Test of Rocks under Confining Pressure

Effects of temperature and confining pressure on mode II fracture toughness of rocks (Case study: Lushan Sandstone)

The fracture mechanics examines the development and expansion of cracks in solids and how they affect the deformation of materials. The stress intensity factors at the tip of the crack and the critical stress intensity factors or fracture toughness of materials are considered in the relevant criteria. There are three main modes of applying forces to a crack including the tensile mode, shear mod...

Permeability of Fractured Media under Confining Pressure: A Simplified Model

An elastic-plastic model was developed to describe the deformation and permeability of fractured rocks under confining pressure. Elastic and elastic-plastic contact models were used in the model to analyze the deformations of a representative element containing a single fracture under various confining pressures. The present work utilized elements from contact mechanics and viscous flows to der...

the study of effect of confining pressure on electrical resistivity of hydrocarbon reservoirs rocks

the electrical resistivity of hydrocarbon reservoir rocks is an important parameters in the calculation of water and oil saturation percent in both carbonate and sandstone reservoir rocks.in this regard, most studies have concentrated on the confining  pressure on cementation factor and electrical resistivity in sandstone reservoir rocks. in this study the effect of confining pressure on cement...

Amorphous silica between confining walls and under shear : a computer simulation study

Molecular dynamics computer simulations are used to investigate a silica melt confined between walls at equilibrium and in a steady–state Poisseuille flow. The walls consist of point particles forming a rigid face–centered cubic lattice and the interaction of the walls with the melt atoms is modelled such that the wall particles have only a weak bonding to those in the melt, i.e. much weaker th...

Transmission electron microscopy of semi-insulating Ga As deformed at room temperature and under confining pressure