WQ1 Mishrif地层相对渗透率数据的归一化与反归一化实验研究

A. Radhi, Mohammed S. Aljwad
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引用次数: 1

摘要

在许多采油系统中,相对渗透率是影响流体分散和石油资源产量的重要流动因素。传统上,需要从储层中提取岩石样本并进行适当的实验室研究,以获得这些关键的储层特性。尽管kr是流体饱和度的函数,但现在已经确定,孔隙形状和分布、绝对渗透率、润湿性、界面张力(IFT)和饱和度历史都会影响kr值。这些岩石/流体特征因储层区域而异,不可能在所有储层区域进行kr测量。采用非稳态方法计算了WQ1 Mishrif地层岩心塞中五种碳酸盐的相对渗透率。使用Johnson、Bossler和Naumann(JBN)相关计算的相对渗透率,即考虑了一种非稳态方法,其中发现芯塞是水湿的。已使用归一化方法来消除束缚水和残余饱和度的影响,这些影响会因环境而异。根据其自身的束缚水和截留饱和度,随后可以对相对渗透率进行去归一化,并将其分配给储层的不同部分(岩石类型)。本研究的目的是使通过注水确定的相对渗透率标准化。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Normalize and De-Normalize of Relative Permeability Data for Mishrif Formation in WQ1: An Experimental Work
In many oil-recovery systems, relative permeabilities (kr) are essential flow factors that affect fluid dispersion and output from petroleum resources. Traditionally, taking rock samples from the reservoir and performing suitable laboratory studies is required to get these crucial reservoir properties. Despite the fact that kr is a function of fluid saturation, it is now well established that pore shape and distribution, absolute permeability, wettability, interfacial tension (IFT), and saturation history all influence kr values. These rock/fluid characteristics vary greatly from one reservoir region to the next, and it would be impossible to make kr measurements in all of them. The unsteady-state approach was used to calculate the relative permeability of five carbonate for core plugs from the Mishrif formation of WQ1. The relative permeability calculated by using Johnson, Bossler and Naumann (JBN) Correlation, which is, consider one of the unsteady-state approach where it found that the core plugs are water wet. A normalizing approach has been used to remove the effect of irreducible water and residual saturations, which would vary according on the environment. Based on their own irreducible water and trapped saturations, the relative permeabilities can subsequently be de-normalized and assigned to distinct sections (rock types) of the reservoir. The goal of this research is to normalize the relative permeability that was determined through water flooding.
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