研究区储层属于亲水储层，本文主要从相渗特征，含水及含水上升率变化规律以及无因次产液、产油指数变化规律三个方面来研究该储层的渗流特征.研究结果表明随着含水饱和度增加，油相渗透率下降很快，而水相渗透率增加较慢.该油田在生产过程中，含水饱和度在0.4耀0.5之间含水上升最快，高含水期含水上升率缓慢减小.由于原油粘度低，随着含水率的增大，无因次产液、产油指数、吸水指数这三个指数都呈现了近似线性的变化规律，含水率95%以后会大幅提高.%The study area are hydrophilic reservoir,this article from three aspects of relative permeability characteristics,the variation of water content and rise rate,Variation of dimensionless fluid production, oil production index to study percolation characteristics of the the reservoir.The results show that with increasing water saturation,the oil relative permeability decline rapidly,and increased penetration of water phase is slow. In the production process, the water saturation moisture content between 0.4 to 0.5 the fastest rising,in the high water cut stage,the cut rising rate decreases slowly.Due to the low viscosity of crude oil,with the increase of moisture, three index of dimensionless fluid production, oil production, injectivity index presents a nearly linear variation.the three indices will substantial increase in the moisture content greater than 95%[1].
展开▼
