鱼骨水平井不稳定产能分析及分支形态优化  

Analysis for Transient Deliverability of Herringbone Gas Well and Optimum Configuration of Lateral Holes

作　　者：蒋开 李闽[2] 何志雄[2] 薛国庆 

机构地区：[1]中海石油(中国)有限公司湛江分公司,广东湛江524057 [2]"油气藏地质及开发工程"国家重点实验室.西南石油大学,四川成都610500

出　　处：《西南石油大学学报（自然科学版）》2013年第6期127-132,共6页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金："油气藏地质及开发工程"国家重点实验室开放式基金(PLN1004)

摘　　要：根据气体不稳定渗流方程,通过Green函数方法和Newman乘积原理推导出气藏水平井不稳定渗流压降方程,应用坐标转换和压降叠加原理推导出平面鱼骨型水平气井不稳定产能预测模型,对模型进行离散化求解,得到鱼骨型水平气井的产量和沿各井段的流入量。运用产能模型对鱼骨型水平气井分支摆放位置、分支角度和分支数进行了研究,得到了合理的分支摆放位置、分支角度和分支数,并对各井段单位长度井筒流入量和主干井筒内流量分布进行了分析,计算了流入量剖面和流量分布规律,为鱼骨型水平井的优化设计提供了理论依据。Based on gas transient flow theory, the pseudo-pressure drop analytical solution of horizontal gas well was derived according to Newman＇s product principle and Green function, the transient deliverability model of plane herringbone horizontal gas well was established with the coordinate conversion and pressure-drop superposition principle. Production of herringbone gas well and inflow of each section were calculated by discrete computation. The rule of gas yield change and production time was studied with the gas productivity model with nodal system analysis, and the lateral location, lateral angle and the number of laterals were analyzed to obtain the appropriate location, the rational lateral angle, and the reasonable number of laterals, which provide theoretical basis for optimization design of herringbone gas well.

关 键 词：鱼骨水平井 不稳定渗流 离散化求解 产能分析 分支形态优化 

分 类 号：TE328[石油与天然气工程—油气田开发工程]