储集层流动单元水驱油实验研究

正确认识测井响应高含水储集层的规律和特征，对于评价水淹层、研究剩余油饱和度及其分布特征十分重要。选取高含水期密闭取心井的岩心，在储集层条件下进行水驱油实验，结果表明：相同流体流动单元内部的电阻率、含水率、相对渗透率与含水（油）饱和度间的关系及变化规律相似，不同流动单元间这些关系及变化规律则各有特点，反映了不同流动单元不同的水淹特征和含水（油）饱和度特征。应用储集层流动单元概念，可以在同一储集层内划分出水淹级别不同的单元，为水淹层定量精细解释提供可靠参数，还可建立流动单元与剩余油饱和度间的关系，用于研究剩余油分布特征。图2表4参8（魏斌摘）

Oil-water displacement experiment of reservoir fluid flow unit

In order to evaluate flooded zones and to study remaining oil saturation and its distribution, it is important to know logging response properties of reservoir in the period of high water cut. The fluid displacement experiment is carried out with the core samples selected from a sealed coring well of high water cut. The relationship among resistivity, holdup rate, relative permeability and water (oil) saturation in different flow units and their variation law are studied, and some new knowledge is obtained. The experiment result shows that in the same flow unit, the relationship and the variation law are alike; but in the different flow unit, the condition is contrary. This means that there are varied flooded and saturation properties among different flow units, and that reservoir flow units can be used either to divide a reservoir into units of different flooded levels, or to calculate remaining oil saturation by flow units. The using of flow unit offers a new method to the study of remaining oil distribution properties.