水驱油藏高含水期渗透率的动态分布计算模型及应用  

Calculation model of dynamic permeability distribution and its application to water drive reservoir at high water cut stage

作　　者：崔传智[1,1] 耿正玲 王延忠[2] 黄迎松[2] 刘慧卿[1] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580 [2]中石化胜利油田地质科学研究院,山东东营257015

出　　处：《中国石油大学学报（自然科学版）》2012年第4期118-122,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家科技重大专项课题(2011ZX05011-002)

摘　　要：通过对胜利油区整装油田河流相沉积单元相对渗透率曲线的回归分析,建立相对渗透率曲线特征参数随渗透率变化的计算公式;考虑渗透率、相对渗透率曲线的变化,建立考虑储层参数时变特征的油藏模拟系统,并编制相应的计算程序;利用计算程序分析多层油藏合采的层间渗透率动态分布规律及其对层间采出程度的影响。结果表明:综合考虑渗透率、相对渗透率曲线的时变特征,渗透率在水井附近迅速增加,并逐渐向油井方向扩展;相对高渗层的渗透率增加倍数高于低渗层的;综合含水率从80%到98%,相对高渗层的渗透率进一步增加的幅度较小,而相对低渗层的渗透率增加幅度较大;渗透率与相对渗透率曲线的时变特征使得层间采出程度差异扩大。Calculating formula of relative permeability curve whose characteristic parameters change with permeability was developed by regression analysis of relative permeability curves of fluvial facies sedimentary unit of uneompartmentalized reservoirs in Shengli Oilfield. The time-varying parameters reservoir simulation model was established considering the change of permeability and relative permeability curve. Computing program was also programmed. The dynamic permeability distribution rules and recovery degree between layers were analyzed by the program. The results show that considering the change of permeability and relative permeability, the permeability increases sharply near injection well and expands to production well gradually. The permeability increased degree of high-permeability layer is greater than that of low-permeability layer. When the water cut changes from 80% to 98% , further permeability increased range of high-permeability layer is very small, while that of low-permeability layer is big. The difference of recovery degree between layers also becomes larger because of the effect of time-varying parameters.

关 键 词：堵水调剖 参数时变 渗透率 动态分布 油藏模拟 多层油藏 

分 类 号：TE311[石油与天然气工程—油气田开发工程]