Abstract Previously, hydrogeologists and petroleum engineers use seepage experiments to measure permeability. This paper develops a novel method calculate matrix permeability from velocity attenuation of an ultrasonic S-wave. At first, is derived as function frequency when S-wave scans fluid-saturated rock. Substituting the into previous model gives theoretical attenuation, in which nexus param...

Formation elastic properties near a borehole may be altered from their original state due to the stress concentration around the borehole. This can lead to an incorrect estimation of formation elastic properties measured from sonic logs. Previous work has focused on estimating the elastic properties of the formation surrounding a borehole under anisotropic stress loading. We studied the effect ...

A numerical method using discontinuous polynomial approximations is formulated for solving a phase-field model of two immiscible fluids with soluble surfactant. The proposed scheme shown to decay the total free Helmholtz energy at discrete level, which consistent continuous dynamics. recovers Langmuir adsorption isotherms equilibrium. Simulations spinodal decomposition, flow through cylinder an...