基于无因次压降曲线的注水优势流动通道识别方法  

Method of recognizing preferred water flow channels with dimensionless pressure drop curve

作　　者：谷建伟[1,1] 张秀梅[1] 郑家朋[1,2] 樊兆亚[1] 

机构地区：[1]中国石油大学石油工程学院,山东青岛266555 [2]中国石油冀东油田分公司钻采工艺研究院,河北唐山063004

出　　处：《中国石油大学学报（自然科学版）》2011年第5期89-93,共5页Journal of China University of Petroleum(Edition of Natural Science)

基　　金：国家油气重大专项课题(2011zx05009-003)

摘　　要：根据试井基本理论,推导无因次井底压降表达公式,以冀东南堡陆地中浅层油藏资料为基础,建立典型井组数值概念模型,计算分析7个渗透率范围10种渗透率差异倍数下的无因次压降图版。理论分析和数值概念模型计算均表明:采用无因次压降可以消除注水量、吸水地层厚度、地层压力等参数对井底压降特征的影响;在研究区块油藏条件下,当渗透率差异超过6倍后,可形成优势流动通道。Based on fundamental well test theory, the formula of dimensionless bottom hole pressure drop was derived. With the information of shallow reservoir in Jidong Oilfield, the numerical concept model of well groups was established. The dimensionless pressure drop plate under seven different permeability ranges and ten permeability difference coefficients were calculated and analyzed. The theoretical analysis and numerical concept model calculation results show that the dimensionless pressure drop can eliminate the effects of injection water volume, thick of water absorption lay, formation pressure on the bottom hole pressure drop. Under the studied reservoir conditions, the preferred water flow channels form when the permeability difference coefficient is greater than 6.

关 键 词：冀东南堡油田 井口压降曲线 无因次井底压降 图版 优势流动通道 渗透率差异倍数 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]