鱼骨状分支井井型参数优化理论与方法  

Study on optimization theory and method of herringbone well configuration

作　　者：安永生[1,2] 李振泉[1] 张世明[1] 段崇睿[3] 

机构地区：[1]中国石化股份胜利油田分公司地质科学研究院,山东东营257015 [2]中国石油大学(北京)石油工程教育部重点实验室,北京102249 [3]西安电子科技大学计算机学院,陕西西安710071

出　　处：《油气地质与采收率》2011年第4期82-85,117,共4页Petroleum Geology and Recovery Efficiency

基　　金：国家重大专项"复杂结构井优化设计与控制关键技术"(2009ZX05009-005)

摘　　要：针对目前鱼骨状分支井在井型优化过程中存在的问题,利用解析模型分析了鱼骨状分支井井型参数对泄油面积、主井筒产能、分支井筒产能的影响,提出了鱼骨状分支井井型参数优化理论,在此基础上对鱼骨状分支井的分支长度、分支数目、分支角度进行了优化研究。结果表明:在以单井产能为优化目标对鱼骨状分支井进行井型优化时,应首先考虑分支长度,其次考虑分支数目,在满足两者的基础上考虑分支角度的影响,分支间距在优化过程中可适当弱化。当分支数目较少、分支角度较大时,可以选取较大的分支长度,反之,分支长度则不应过长;分支数目不应小于2;分支角度不应小于30°。同时,应根据实际油藏条件灵活运用优化方法和结论。In response to the widely application of herringbone wells in our country,a study of effect of herringbone well configuration on drainage area,productivity of main bore and productivity of lateral bore is presented by analytical model.An optimization theory of herringbone well configuration is proposed.On the basis of the theory,the optimization of lateral length,lateral number and lateral angle of herringbone wells is studied.The result indicates that the lateral length of herringbone well should be considered firstly in the optimization of herringbone well configuration.Lateral number and lateral angle should be considered secondly. The lateral interval should be considered lastly.The longer lateral length should be selected when lateral number is relatively small and lateral angel is high,and vice versa.Lateral number should be more than two and lateral angle should be more than thirty.At the same time,the optimization of method and conclusion of herringbone wells should be used flexibly according to the condition of field reservoir.

关 键 词：鱼骨状分支井 泄油面积 井型参数 产出剖面 分支长度 分支数目 产能 

分 类 号：TE313.4[石油与天然气工程—油气田开发工程]