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.
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Book•
24 Jan 1986
TL;DR: In this article, the authors present a method to predict the flow of fluids within a hydrocarbon deposit using both steady-state and unsteady state measurements, and the calculation of relative permeability from field data is illustrated.
Abstract: This book enables petroleum reservoir engineers to predict the flow of fluids within a hydrocarbon deposit. Laboratory techniques are described for both steady-state and unsteady state measurements, and the calculation of relative permeability from field data is illustrated. A discussion of techniques for determing wettability is included, along with theoretical and empirical methods for the calculation of relative permeability, and prediction techniques. Contents include: Measurement of Rock Relative Permeability; Two-Phase Relative Permeability; Factors Affecting Two-Phase Relative Permeability; Three-Phase Relative Permeability; and Index.
435 citations
TL;DR: In this paper, the effect of the sand content on the development of pore structure, the permeability to water, and the diffusivity of chloride ions was studied on portland cement mortars.
435 citations
TL;DR: In this paper, it is shown that clays do not conform to the Kozeny theory in its simple form, but that it may be modified to give a satisfactory representation of the data available.
Abstract: It is shown that the permeability of a water-saturated sand or fine powder can be calculated with considerable accuracy, if the porosity and the specific surface are known. In particular, the Kozeny theory here discussed leads to a very useful relationship between permeability and porosity. It is shown that clays do not conform to the theory in its simple form, but that it may be modified to give a satisfactory representation of the data available. The physical grounds for this modified theory are discussed in some detail, and it is shown that, while it is open to criticism, it is at least in harmony with our present knowledge of clays.An important deduction which follows from the modified theory is that clays may have zero permeability at quite considerable porosities, e.g. at ∈ = 0·207 for a clay soil, and ∈ = 0·355 for a plastic clay.
430 citations
TL;DR: In this article, an approximate model for the fluctuations of the mean density of the particles surrounding a central one was introduced and adjusted so as to represent the experimental results. But the model was not extended to the case of catalytic particles.
Abstract: A previous calculation of the permeability of a swarm of particles is extended to closely packed particles. An approximate model is introduced for the fluctuations of the mean density of the particles surrounding a central one and adjusted so as to represent the experimental results. This refined model serves as a basis for an extension of the calculation to particles which themselves are permeable such as occur in catalyst pellets.
427 citations
TL;DR: In this article, the authors investigated the stress-dependent permeability issue in fractured rock masses considering the effects of nonlinear normal deformation and shear dilation of fractures using a two-dimensional distinct element method program, UDEC.
427 citations