鱼骨气井不稳定产能预测新模型  

New Model for Transient Deliverability Prediction of Herringbone Gas Well

作　　者：何志雄[1] 蒋开[2] 李闽[3] 刘忠群[4] 

机构地区：[1]西南石油大学理学院,成都610500 [2]西南石油大学研究生院,成都610500 [3]西南石油大学石油工程学院,成都610500 [4]中国石化华北分公司勘探开发研究院,郑州450006

出　　处：《新疆石油地质》2010年第6期610-613,共4页Xinjiang Petroleum Geology

基　　金：国家自然科学基金项目(50874094);油气藏地质及开发工程国家重点实验室开放式基金项目(PLN1004)

摘　　要：基于气体不稳定渗流理论,应用Newman乘积原理和Green函数得到水平气井的压降解析解,结合坐标旋转推导鱼骨分支的压降方程,运用压降叠加原理导出鱼骨气井不稳定产能预测模型,并对模型进行离散化求解。实例计算结果表明:①鱼骨气井产量随生产时间增加而不断减小,后趋于一定值,流动达到拟稳态;②主干井单位长度井筒流量呈现两端大、中间小的趋势,在与分支相交的结合点处最小,分支井段距主干井越远,单位长度井筒流量越大。Based on gas transient flow theory and the pressure drop analytical solution of the horizontal gas well obtained by Newman＇s product principle and Green function,combined with rotation of axes deriving the pressure drop equation of the sidetrack,the transient deliverability prediction model of herringbone gas wells is presented and solved by discretization.Computational analysis shows that： ①The production of herringbone gas well decreases with time,followed by tending to a certain rate,and characterized by pseudo-steady state flow;②The unit length flow rate of main wellbore trends to great at both ends and small in the middle,with the smallest in the intersection,and the farther from the main wellbore,the greater the unit length flow rate of sidetrack wellbore is.

关 键 词：鱼骨气井 不稳定产能 预测模型 流量分布 

分 类 号：TE355.6[石油与天然气工程—油气田开发工程]