基于层次分析的水淹层识别方法  

Identification method of water flooded layer based on analytic hierarchy process

作　　者：张桂迎 杜航 贾国辉 邓成明 贾志中 ZHANG Guiying;DU Hang;JIA Guohui;DENG Chengming;JIA Zhizhong(NO.3 Oil Production Plant of Huabei Oilfield Company,PetroChina,Hejian,Hebei 062450,China)

机构地区：[1]中国石油华北油田公司第三采油厂,河北河间062450

出　　处：《石油地质与工程》2023年第2期56-59,64,共5页Petroleum Geology and Engineering

摘　　要：由于水淹层识别中采用定性法难以数值化,而采用定量法参数单一化,会存在较大误差。为了减小水淹层识别的误差,文中探索一种半定量的方法,应用层次分析法对X区油藏开展水淹层识别。通过建立水淹层层次结构,用判断矩阵和水淹层识别参数权重进行计算分析,结果显示,产水率和采出指数是对水淹层定量识别影响最大的,其次是含油饱和度和相对渗透率指数的影响。本文还综合研究了砂岩和砾岩的产水率、含油饱和度、含水饱和度、采出指数、油相和水相相对渗透率之间的交会关系,得出水淹层识别各个评价参数的定量指标,形成一个综合的水淹层识别指数,应用评价结果显示,总的水淹层识别符合率达到70%。As the qualitative method is difficult to be numerically used in the identification of water flooded layers,the quantitative method is simplified on parameters,and then there will be bigger errors.in order to reduce the errors in the identification of water flooded layers,a semi quantitative method is adopted in this paper,and the analytic hierarchy process is carried out in the reservoirs of Area X.By establishing the water-flooded layer structure,the judgment matrix and the weight of water-flooded layer identification parameters are used for calculation and analysis.The results show that water production rate and recovery index are the most important factors for quantitative identification of water-flooded zones,followed by oil saturation and relative permeability index.In addition,the cross relation among water yield,oil saturation,water saturation,recovery index,relative permeability of oil phase and water phase of sandstone and conglomerate is also studied.The quantitative index of each evaluation parameter of water-flooded layer identification is obtained,and a comprehensive water-flooded layer identification index is formed.The application evaluation results show that the overall water-flooded layer identification coincidence rate can reach 70%.

关 键 词：水淹层 产水率 采出指数 相对渗透率指数 层次分析法 

分 类 号：TE319[石油与天然气工程—油气田开发工程]