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METHOD OF RESEARCH OF INFLUENCE OF ACID TREATMENT ON PROPERTIES OF RESERVOIR ROCK

机译:酸处理对储层岩石性质影响的研究方法

摘要

FIELD: oil and gas industry.;SUBSTANCE: for the experiment, core samples with similar lithological composition and poroperm and physico-mechanical properties are used. If possible, the samples are drilled from one piece of the original core material. In the extracted and dried core samples, a residual water saturation is created using synthetic brine. For reservoir rocks of oil fields, the samples are then saturated with kerosene or oil. The acid composition is selected on the basis of the lithological characteristics of the reservoir rocks. Each sample is individually placed in an installation that allows the acid composition to be filtered. In the installation, effective stresses are created, which correspond to the formation conditions, and a certain amount of pore volumes of the core sample of the acid composition are pumped through all the samples except one. Further, the elastic and strength properties of all core samples are tested by a static method. A correlation dependence of the change in the elastic and strength properties of core samples is constructed depending on the pumped pore volumes of the acid composition.;EFFECT: determination of the tendency of the change in the elastic and strength properties of reservoir rocks after the pumped volumes of acid composition.;1 dwg
机译:领域:石油和天然气工业;物质:用于实验的岩心样品具有相似的岩性组成和成孔作用以及物理机械性能。如果可能,从一块原始芯材上钻取样品。在提取和干燥的岩心样品中,使用合成盐水会产生残留水饱和度。对于油田的储层岩石,然后将样品用煤油或石油饱和。根据储层岩石的岩性特征选择酸组成。每个样品都单独放置在可以过滤酸成分的设备中。在安装过程中,会产生与形成条件相对应的有效应力,并且将酸组合物核心样品的一定数量的孔体积泵入除一个样品之外的所有样品中。此外,所有芯样品的弹性和强度特性均通过静态方法进行测试。根据酸成分的泵送孔隙体积,构造岩心样品的弹性和强度特性变化的相关性。效果:确定泵送后储集岩的弹性和强度特性变化趋势酸成分的体积。; 1 dwg

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