考虑毛管力/流变性/相渗作用的聚表二元驱前缘位置预测  

Predict the Front Displacement Position of the P/S Binary Flooding Considering Capillary Force/Rheology/Phase Permeability

作　　者：王纪伟 宋丽阳[1] 董驰[2] 王兴旺 王刚 WANG Ji-wei;SONG Li-yang;DONG Chi;WANG Xing-wang;WANG Gang(Petroleum Exploration and Production Research Institute,SINOPEC,Beijing 100083,China;Northeast Petroleum University,Daqing 163318,China;School of Chemistry,Guangdong University of Petrochemical Technology,Maoming 525000,China)

机构地区：[1]中国石化石油勘探开发研究院,北京100083 [2]东北石油大学,黑龙江大庆163318 [3]广东石油化工学院化学学院,广东茂名525000

出　　处：《数学的实践与认识》2019年第19期153-161,共9页Mathematics in Practice and Theory

基　　金：国家重点自然科学基金项目“驱油相自扩大波及体积提高采收率新方法”(51834005);国家科技重大专项“海上油田化学驱综合调整技术研究”(2016ZX050250003);“优势渗流通道识别方法研究”(2016ZX05010003)

摘　　要：油气田开发过程中,驱替相的前缘位置对评价驱替效果、判断储层特性等具有十分重要的意义.然而,由于储层渗流规律的复杂性,使得该问题较为难解.基于表达界面张力的拉普拉斯方程,来表示毛管力的大小,建立了考虑毛管力影响时的二元驱分流方程和前缘推进位置的微分方程.在微分方程的求解过程中,又考虑了聚合物的幂律指数、稠度系数两个流变性参数,和二元驱过程中储层渗透率、相渗曲线的变化.应用该方程计算锦州9-3油田注二元井的见二元时间,计算结果与实际矿场测试结果一致,对提高区块聚表二元驱的驱替效率有重要的指导意义.In the process of oil and gas field exploitation,the front displacement position is great significance for evaluating the displacement effect and judging the reservoir characteristics.However,due to the complexity of the reservoir displacement law,this problem is more difficult to solve.In this paper,the Laplace equation expresses the interfacial tension,so the Laplace equation could express the magnitude of the capillary force.And establish the fractional flow equation of the binary flooding and the differential equation of the front position considering the influence of capillary force.In the process of solving differential equation,two rheological parameters of power law index and consistency coefficient,and changes of reservoir permeability and phase permeability curve during binary flooding are considered.The equation is used to calculate the binary breakthrough time in JZ 9-3 oilfield.The calculation results are consistent with the actual test results,which has important guiding significance for improving the flooding effect of the block.

关 键 词：聚表二元驱 毛管力 前缘位置 剪切速率 幂律指数 稠度系数 

分 类 号：O17[理学—数学]