利用水驱曲线动态求取残余油水相渗透率的新方法

摘要

Based on the performance of single welland the micro-percolation pattern in two phasesof oil and water,a method to calculate the rela-tive permeability of water under residual oil satu-ration was established.Its actual calculations intypical oilfields have indicated that the relativepermeability of water will increase 0-2 to 0-3than its initial measurements.This method ofperformance calculation may provide a theoreticalsupport for researching the remaining oil distri-bution and calibrating the recoverable reserves inthe middle and late stages of oilfield develop-ment.%基于单井生产动态特征及油水两相微观渗流规律，建立了残余油饱和度条件下水相相对渗透率的求解方法。典型油田实例计算结果表明，通过多倍水驱后，水相相对渗透率端点值较原始测试结果可增加0.2～0.3。本文提出的这种动态求解方法为油田开发中后期剩余油分布规律研究及可采储量标定提供了理论支持。