延长油田水平井钻井优化设计及应用

The design of horizontal well drilling optimization and application of Yanchang oilfield

从钻井设计角度出发,根据水平井靶前距的大小,提出了三维轨迹、负位移、三增剖面等剖面优化设计;针对陕北黄土高原的地形特征及延长油田开发区域的具体特点提出了二开的井身结构设计;结合现场经验及理论研究,提出了延长水平井底部钻具组合的具体实施方案;这些优化措施降低了井眼轨迹控制的难度,提高了现场施工的机械钻速及施工能力,提高了水平井的成功率。

From the perspective of the drilling design,according to the size of the distance of hitting target of horizontal well,the profile optimization design method is put forward that three-dimensional trajectory,negative displacement,the profile of three increases and such as.According to the topographic characteristics of northern Shanxi loess plateau and characteristics of development area of Yanchang oilfield, the two open of well bore structure design is put forward.With field experience and theoretical research,the concrete implementation plan of the BHA horizontal well is put forward.These optimization measures reduce the difficuity of wellbore trajectory control,improve the rate of drilling speed in the field,work ability, and the success rate of horizontal well.