نتایج جستجو برای: relative permeability carbonate flooding rate capillary discontinuity
تعداد نتایج: 1410272 فیلتر نتایج به سال:
In vivo dissolution of crystalline insulin formulations is an important step for insulin absorption in the subcutaneous therapy of diabetes, which is the most widespread. Here, data on the in vitro dissolution of three different crystalline forms of commercial porcine insulin are reported. The aim of this study was to create a model framework of in vivo dissolution of insulin crystalline formul...
The prediction of porosity is achieved by using available core and log data; however, the estimation of permeability is limited to the scare core data. Hence, porosity and saturation data through the framework of flow units can be used to make an estimation of reservoir permeability. The purpose of this study is to predict the permeability of a carbonate gas reservoir by using physical-based em...
In this work, stress-dependent absolute and relative permeabilites in porous media are studied using the discrete element method lattice Boltzmann method. The change of permeability porosity during compaction is found follow a power-law relation. homogeneous pack agreement with prediction Carman-Kozeny equation. Porosity exponent increased due to existence vugs but decreased fractures. Relative...
Development of pore network models for real porous media requires a detailed understanding of physical processes occurring on the microscopic scale and a complete description of porous media morphology. In this study, the microstructure of porous media has been represented by three dimensional networks of interconnected pores and throats which are designed by an object oriented approach. Afterw...
Dynamic Effect in the Capillary Pressure–Saturation Relationship and its Impacts on Unsaturated Flow
where Pn and Pw are the average pressures of nonwetting and wetting phases, respectively; Pc is capillary pressure, Capillary pressure plays a central role in the description of water and S is the wetting phase saturation. A schematic depicflow in unsaturated soils. While capillarity is ubiquitous in unsaturated tion of Pc vs. S curves is given in Fig. 1. analyses, the theoretical basis and pra...
Abstract Traditionally, steady-state relative permeability is calculated from measurements on small rock samples using Darcy’s law and assuming a homogenous saturation profile constant capillary pressure. However, these assumptions are rarely correct as local inhomogeneities exist; furthermore, the wetting phase tends to be retained at outlet–the so-called end effect. We have introduced new met...
We perform single-phase and two-phase flooding on Edwards Brown rock samples. The injection was of seawater or CaCl2 brine, at successive salinities 0.63, 0.21, 0.07, 0.05, 0 mol/L (distilled water). For brine experimental run, no significant fines migration permeability decrease is observed. distilled water found to bring about the highest concentration produced most decrease, with ultimate be...
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