Topic
Permeability (earth sciences)
About: Permeability (earth sciences) is a research topic. Over the lifetime, 15424 publications have been published within this topic receiving 288535 citations.
Papers published on a yearly basis
Papers
More filters
TL;DR: In this article, the authors show that the permeability of nonsaline cap rock and interlayers is in the range of 10−18−10−20 m2, whereas the interface in between salt and interlayer behaves as if impervious.
85 citations
TL;DR: In this article, a mixed finite-element procedure is proposed to solve for both the pressure and velocity of the total fluid simultaneously as a system of first-order partial differential equations, which minimizes the difficulties occurring in standard methods caused by differentiation or differencing of p and multiplication by rough coefficients k/..mu.
Abstract: Effective numerical simulation of many EOR problems requires very accurate approximation of the Darcy velocities of the respective fluids. In this paper the authors describe a new method for the accurate determination of the Darcy velocity of the total fluid in the miscible displacement of one incompressible fluid by another in a porous medium. The new mixed finite-element procedure solves for both the pressure and velocity of the total fluid simultaneously as a system of first-order partial differential equations. By solving for u=(-K/..mu..) p as one term, we minimize the difficulties occurring in standard methods caused by differentiation or differencing of p and multiplication by rough coefficients k/..mu... By using mixed finite elements for the pressure equation coupled in a sequential method with a finite element procedure for the concentration of the invading fluid, we are able to treat a variety of problems with variable permeabilities, different mobility ratios, and a fairly general location of injection and production wells. Mixed finite-element methods also produce minimal grid-orientation effect. Computational results on a variety of two-dimensional (2D) problems are presented.
85 citations
TL;DR: In this article, the authors described experiments on shale permeability and its anisotropy with respect to gas pressure, effective stress and gas type for a natural fracture supported with two sizes of proppant.
85 citations
TL;DR: Unsaturated hydraulic conductivity is the primary soil parameter required when performing seepage analyses for unsaturated-saturated soil systems as discussed by the authors. But it is not a suitable soil parameter for seeping.
Abstract: Unsaturated hydraulic conductivity is the primary soil parameter required when performing seepage analyses for unsaturated–saturated soil systems. Unsaturated hydraulic conductivity is also one of ...
85 citations
TL;DR: In this paper, a large set of experimental data for pressure drop of water flow in three different porous media was collected, i.e., packed beds of spheres, packed spheres of 3mm and aluminum foam having 20 pores per inch.
85 citations