气藏压裂水平井非稳态产能计算模型  

TRANSIENT DELIVERABILITY MODEL OF FRACTURED HORIZONTAL GAS WELLS

作　　者：蒋开 何志雄[2] 李闽[2] 刘忠群[3] 

机构地区：[1]中海石油(中国)有限公司湛江分公司研究院 [2]油气藏地质及开发工程重点实验室.西南石油大学 [3]中国石化华北分公司勘探开发研究院

出　　处：《钻采工艺》2011年第6期47-50,8,共4页Drilling & Production Technology

基　　金：油气藏地质及开发工程国家重点实验室开放式基金项目<水平气井拟稳态渗流数学模型研究>(PLN1004);国家自然科学基金项目<异常高压气井(藏)开发动态模拟及最优控制研究>(编号:50874094)资助

摘　　要：结合气藏水平井压后裂缝形态特征和流体在裂缝中的渗流机理,应用压降叠加原理和节点分析方法,建立气藏压裂水平井非稳态产能计算模型,用数值求解方法计算得到不稳定状态下的产能。通过实例计算,揭示了压裂水平气井产能随时间的变化规律,并对裂缝干扰和各裂缝流量进行了分析。结果表明:压裂水平气井在进行不稳定产能分析时需要考虑裂缝干扰对产能的影响;两侧裂缝的产量比中间裂缝的产量高。Combining morphological fracture feature after horizontal gas wells being fractured and fluid flow mechanism in fracture, transient deliverability model of fractured horizontal gas wells was established according to superposition principle and analytical solutions, the productivity in nonsteady state was obtained by numerical computation. Numerical examples revealed the law of fractured horizontal gas wells deliverability variation with time, and the facture interference and flow rate of each facture were also analyzed. The results showed that: it was need to consider the impact of fracture disturbance on productivity when doing transient deliverability analysis, the output of both sides fracture were more than that of the middle.

关 键 词：压裂 水平井 气井 非稳定 产能 

分 类 号：TE328[石油与天然气工程—油气田开发工程]