水平井分段完井不同分段模式优化研究  

Optimization Research on the Different Selective Completion of Horizontal Well

作　　者：张林[1] 蒋婕[2] 王春[3] 熊友明[1] 单彦魁[1] 陈阳[1] 徐家年[1] 王彬[1] 

机构地区：[1]西南石油大学油气藏地质及开发工程国家重点实验室完井中心,成都610500 [2]中国石油西南油气田分公司输气处,重庆401120 [3]CACT作业者集团,广东深圳518069

出　　处：《地质科技情报》2012年第1期82-85,共4页Geological Science and Technology Information

基　　金：国家科技重大专项"碳酸盐岩超深井固井;完井技术配套专题项目"(2008ZX05049-003-08HZ)

摘　　要：运用势的叠加原理和镜像反映原理,导出了水平井任意分段模式下井筒与油藏渗流耦合产能计算模型,用该模型可以计算任意分段模式下水平井的产能,通过对比不同分段模式下的水平井产能,可以对分段进行优化,从而指导分段完井方案的制定。研究结果表明:当打开程度一定时,不同分段模式对产量影响不大;产量随着打开程度的提高而增加,但当打开程度大于40%时,产量增幅趋于平缓,因此,打开程度必须大于打开临界程度,这样既减小了因分段而牺牲的产量又达到了分段的目的;井筒摩阻对产量影响较大,在进行分段优化时,必须考虑井筒摩阻的影响,从而优选盲管段的位置。Using the potential superposition principle and mirror image principle deduced different partially horizontal well based on the coupling wellbore and reservoir flow productivity calculation model, using this model can compute any deliverability of partially open horizontal well. Through comparing the different deliverability of the partital horizontal well can optimize the selective completion and guide the implementa- tion of well completion techniques. Examples show that the different selective completion has little effect on the deliverability when open a certain degree. As we all know, the production rate increases with in- creasing degree of horizontal well opening. However, when the opening degree is more than 40~//0, the pro- duction rate tends to be gentle. Therefore, it it recommended to open the horizontal well greater than a certain extent. This not only reduces the production rate because of the partial completion but also achieves the purpose of selective completion. In addition, the friction of the horizontal wellbore has great effect on the production rate. Thus in the subsection optimization, the influence of friction shaft must be considered in order to optimize the blind-pipe location

关 键 词：水平井 分段完井 耦合 产能 优化 

分 类 号：TE355.2[石油与天然气工程—油气田开发工程]