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井眼轨道设计是轨道控制的基础和依据。最好的井眼轨道设计应是最接近施工实际,降低控制难度的设计。为了充分发挥动力钻具和转盘钻具各自的优势,提高钻井速度,常采用三段增斜方法设计水平井井眼轨道,将常规五段制设计的稳斜井段改为第二增斜段,采用“增-微增-复合增斜”入窗剖面,通过调整第二增斜段的造斜率和段长,弥补钻具造斜能力的偏差,还可以实现用一套钻具组合完成第一造斜段和第二增斜段的钻进,并减少了起下钻次数。
Wellbore orbit design is the basis and basis of orbital control. The best hole trajectory design should be the closest to the actual construction, reducing the difficulty of control design. In order to give full play to the respective advantages of power drill and turntable drilling tools and improve the drilling speed, the horizontal well-bore trajectory is often designed by the three-step increasing slope method, and the steady inclined section of the conventional five-section design is changed to the second increased section , By using “increase - increase - composite increase ramp” into the window profile, by adjusting the second increase of the slope of the slope and section length, to make up for the deviation of the ability to make drilling rig, but also can be achieved with a set of drilling tools The drilling of the first and second increased bends is completed and the number of drillings reduced.