نتایج جستجو برای: relative permeability

تعداد نتایج: 436186  

The structural properties and microwave absorption capability of the iron nanoparticles and iron-carbon core-shell nanoparticles have been studied, in the present paper. The investigated nanoparticles were synthesized by hydrothermal route and by reduction of hematite nanoparticles during annealing in argon-hydrogen atmosphere. Hematite-iron phase transformation during the reduction process has...

2003
Matthew D. Jackson Per H. Valvatne Martin J. Blunt

We describe a poreto reservoir-scale investigation of wettability variation and its impact on waterflooding. We use a three-dimensional pore-scale network model of a Berea sandstone to predict relative permeability and capillary pressure hysteresis. We successfully predict experimentally measured relative permeability data for the water-wet case, and demonstrate that the model captures experime...

In this study, direct laboratory measurements of unsteady-state imbibition test are used in a new approach to obtain relative permeability curves with no predetermined functionality assumptions. Four equations of continuity, Darcy’s law, cumulative oil production, and water fractional flow are employed in combination together under certain assumptions to present the new approach which interpret...

2013
D. M. Zhang L. X. Ma H. W. Huang J. Zhang

This paper suggests a new set of analytical solutions for predicting leakage-induced seepage field and ground settlement in saturated clay. A unique feature of the solutions presented is considering the effect of the tunnel lining through the relative permeability between the tunnel and the soil. Through the superposition method, the proposed method can be easily extended to twin parallel tunne...

2011
A. Feigl

Measurements of relative permeabilities and their analysis and modification by means of appropriate relative permeability models represent one of the bases for development and verification of reservoir simulation models. It requires careful selection of these curves providing that a statistically sufficiently relevant groups of similar curves are available for the selected reservoir or for indi...

2011
Jonathan Levine

Relative Permeability Experiments of Carbon Dioxide Displacing Brine & Their Implications for Carbon Sequestration

Journal: :The Journal of General Physiology 1980
E Orbach A Finkelstein

The permeability of lecithin bilayer membranes to nonelectrolytes is in reasonable agreement with Overton's rule. The is, Pd alpha DKhc, where/Pd is the permeability coefficient of a solute through the bilayer, Khc is its hydrocarbon:water partition coefficient, and D is its diffusion coefficient in bulk hydrocarbon. The partition coefficients are by far the major determinants of the relative m...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2001
D Fukumura T Gohongi A Kadambi Y Izumi J Ang C O Yun D G Buerk P L Huang R K Jain

Nitric oxide (NO) plays a critical role in vascular endothelial growth factor (VEGF)-induced angiogenesis and vascular hyperpermeability. However, the relative contribution of different NO synthase (NOS) isoforms to these processes is not known. Here, we evaluated the relative contributions of endothelial and inducible NOS (eNOS and iNOS, respectively) to angiogenesis and permeability of VEGF-i...

Journal: :Journal of Petroleum Science and Engineering 2021

Relative permeability is affected by several flow parameters, mainly the operating temperature and fluid viscosity. Fluid viscosities change with temperature, which correspondingly affects relative permeability. Temperature believed to have a considerable effect on oil–water permeability, thus vital input parameter in petroleum reservoir production modelling. The actual of oil-water curves has ...

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