摘要
针对多层砂岩低渗透油藏油水井动态监测资料少,分层动用状况分析难度大的问题,提出了一种较实用的分层动用状况研究新方法。从微观渗流机理和宏观开发规律出发,研究了渗流阻力倒数、平均孔喉半径、夹层频数倒数、射开油层有效厚度、单井月产液量等影响低渗透油藏注水开发效果的动、静态因素与单井累产油之间的关系,并通过层次分析法确定各因素的权值,建立了油水井分配系数的计算公式,确定油井的分层产油量,判别油藏分层动用状况。以张强凹陷Q1区块和渤南油田四区低渗透油藏为例进行验证,结果表明,该方法可行,能够用以分析无动态监测资料井点的分层产油量,对下一步的挖潜具有一定的指导作用。
It is difficult to analyze the performance of multi-layered sandstone reservoir, because there is not adequate dynamic detection data for producers and injectors. A new approach to the question is presented. Based on microscopic percolation mechanism and macroscopic development characteristics, after the relationship between cumulative production of single well and the dynamic and static factors which affect waterflood development, such as reciprocal value of filtrational resistance, average pore throat radius, reciprocal value of interlayer frequency, net thickness and monthly liquid production is researched, and a discriminant matrix is established to determine the weights of the various factors. Then distribution coefficient of every producer is gotten, so are the layered accumulative production and performance. The instance validation results show that the method is suitable, and can be used to analyze the performance of wells without dynamic detection data, for guiding the later exploitation.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2013年第4期95-100,共6页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家科技重大专项(2011ZX05009-003)
关键词
低渗透
注水开发影响因素
层次分析法
分层产油量
分层动用状况
low permeable
flood development affecting factors
analytical hieracrchy process
layering crude production
layering developed state
