特高含水期油藏倾角及韵律性对油滴受力状态影响研究  

Influence of Reservoir Dip and Rhythm on Force Applied Condition of Remaining Oil Droplet at Ultrahigh Water-cut Stage

作　　者：李金丹[1] 刘浩瀚[1,2] 刘志斌[3] 颜永勤 

机构地区：[1]四川建筑职业技术学院,四川德阳618000 [2]西南石油大学理学院,四川成都610500 [3]西南石油大学研究生院,四川成都610500 [4]西南石油大学经济管理学院,四川成都610500

出　　处：《石油天然气学报》2014年第2期124-127,138,共5页Journal of Oil and Gas Technology

基　　金：高等院校博士点基金项目(20095121110003)

摘　　要：目前,中国大多数陆上油田都已经进入高含水甚至特高含水期,但采出程度偏低,剩余油饱和度仍普遍高于残余油饱和度,且局部还存在剩余油富集区。研究油藏倾角及韵律性对油滴受力状态影响,进一步提高采收率,对油田的增产稳产具有十分重大的意义。特高含水期剩余油多以油滴分散状分布于毛细管道中,微观因素影响明显,以特高含水期剩余油滴为研究对象,研究油藏倾角及韵律性对油滴受力状态影响,建立了油藏倾角和韵律性作用下油滴受力状态方程,这为深入认识特高含水期油滴微观渗流机理奠定了理论基础。At present,most onshore oilfields in China have entered into high or ultra-high water-cut stage,but the recovery percent has been low.In general,the remaining oil saturation was higher than the residual oil saturation,and the enrichment region of remaining oil still existed.The influence of reservoir dip and rhythm on the force applied condition of the remaining oil droplet at ultra-high water-cut stage was great significance for further enhancing oil recovery and stabilizing oil production.The remaining oil at ultra-high water-cut stage was dispergated in capillary and the effect of micro-factors on remaining oil distribution was apparent.The remaining oil droplets in ultra-high water cut stage are used as object to analyze the effect of reservoir dip and rhythm on force applied condition of and force applied equations of the remaining oil droplet are established considering the reservoir dip and rhythm.This study provides a basis for studying micro filtration mechanism at ultra-high water cut stage.

关 键 词：特高含水期 油藏倾角 韵律性 受力状态 

分 类 号：TE312[石油与天然气工程—油气田开发工程]