鱼骨型分支井井眼轨迹设计方法  

Well Track Design for Fishbone Multilateral Well

作　　者：李维[1] 李黔[1] 李生林 

机构地区：[1]西南石油大学石油工程学院,四川新都610500 [2]中国石油西部钻探克拉玛依钻井公司,新疆克拉玛依834000

出　　处：《天然气技术》2009年第3期45-48,共4页NATURAL GAS TECHNOLOGY

基　　金：国家自然科学基金项目(编号:90610013)的资助

摘　　要：稠油黏度大,向井流动困难,目前多使用蒸汽驱的方法进行开采,而鱼骨型分支井能显著增加油层裸露面积,扩大蒸汽驱波及范围,提高采收率。为此,提出了鱼骨型分支井井眼轨迹设计的思路和步骤,以及鱼骨型分支井的实施工艺和开采方式,建立了鱼骨型分支井井眼轨迹设计的数学模型。采用该模型设计了一口四分支鱼骨型分支井,结果表明所建立的鱼骨型分支井的数学模型符合低渗气藏和稠油油藏开发的需要,兼顾了鱼骨型分支井钻井、完井工艺的要求,在该类型井井眼轨迹设计中具有重要作用。It's difficult for heavy oil to flow towards well because of its high viscosity.At present,steam flooding has been applied widely to heavy-oil production.Fishbone multilateral well can obviously enlarge the bare area of oil layer,expand the scope of steam flooding and increase recovery ratio.Therefore,this paper puts forward not only the idea and step of well track design for fishbone multilateral well,but also the operation and recovery processes.Moreover,a mathematical model for the design has been established.A fishbone multilateral well with four laterals was designed by the model.Test result shows that the established model can meet the requirements of developing low-permeability and heavy-oil reservoirs,as well as drilling and completion processes for fishbone multilateral well.It plays an important role in the well track design of such wells.

关 键 词：稠油 鱼骨型分支井 水平井 井眼轨迹 设计 

分 类 号：TE243[石油与天然气工程—油气井工程]