无限导流水平井不稳态压力计算模型  

A Model of Infinite-Conductivity Horizontal Well Transient Pressure.

作　　者：陈伟[1] 杨宇[1] 李允[1] 张健 

机构地区：[1]西南石油学院,四川成都610500 [2]川中油气矿,四川绥宁629000

出　　处：《油气井测试》2006年第4期8-10,共3页Well Testing

摘　　要：在Ozkan&Raghayan的均匀流率水平井解析模型基础上,建立非均匀流率无限导流的水平井计算模型,利用离散化数值求解技术,以半解析方式计算获得水平井的不稳态流率分布和井筒压力。计算表明,无限导流水平井压力动态早期受流率分布变化影响,并不出现井筒径向流特征。该计算模型具有灵活的扩展机制,为水平井的完井方案优选、产能预测提供了快速、灵活的分析工具。Based on uniform flux analytic model of Ozkan and Raghavan,this paper establishes a computational model of infinite-conductivity horizontal well transient pressure,with discrete numerical method and semi-analytic to calculate transient flux distribution and well- bore pressure.The results indicate that infinite-conductivity horizontal well transient pressure is influenced by variable flux,but it doesn't appear early well-bore radial flow characteristic.The method has flexible extend mechanism and is a fast tool for completed well optimization and inflow performance forecast.

关 键 词：水平井 无限导流 不稳态压力 产能预测 

分 类 号：TE357.1[石油与天然气工程—油气田开发工程] TE37