基于压力恢复曲线的油井堵水决策技术  

Decision-making technique of oil well water plugging based on pressure buildup curve

作　　者：曲占庆 张杰[1] 齐宁 曲永林 王荣[3] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266580 [2]中国石油大港油田公司石油工程研究院,天津300280 [3]中海油田服务股份有限公司油田技术事业部,河北廊坊065201

出　　处：《中国石油大学学报（自然科学版）》2013年第3期115-118,125,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：大型油气田及煤层气开发国家重大专项(2011ZX05051);中石化胜利油田分公司项目

摘　　要：从渗流力学基础理论出发,利用压力恢复曲线,建立数学模型并推导出计算油井堵水的决策指数fPBD的公式,在此基础上,结合影响堵水油井选择的含水上升率指数和剩余油饱和度两个因素,运用综合模糊评判方法求取油井堵水综合决策值,对需堵水的油井进行选择。对垦东521区块某小块7口油井进行堵水选井决策。结果表明:fPBD与水相渗透率相关,可以作为堵水油井决策的依据;该决策选井方法考虑因素完善、数据易取、决策准确,与成功的经验选井方法得出结果吻合程度较高。The mathematical model and decision-making index （fPBD） of water shutoff can be established using the seepage mechanics theory and pressure buildup curve. The target wells were selected based on the fPBD value, water cut rising index, remaining oil saturation and water shutoff comprehensive decision value obtained by fuzzy evaluation method. Seven produc- tion wells in KD521 block were chosen. The results show thatfpBo is related to water permeability, which can be considered as the foundation of water shutoff decision-making. The decision method of selecting well is characterized by taking into ac- count all the factors, data easy to be obtained, and precise decision. The results agree well with that of experienced well se- lection method.

关 键 词：油井堵水 压力恢复曲线 决策指数 综合决策 模糊评判 

分 类 号：TE357[石油与天然气工程—油气田开发工程]