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在人工造斜和纠斜工作中,给偏心楔定向是必不可少的工序,目前国内已有不少定向装置可供使用。但是,采用普通钻杆下楔,对于顶角为5°以下的钻孔来说,钻杆划线还是一种有效的定向方法。钻杆划线定向法操作简便,工具简单可以自制,在100～300m 的钻孔中,1～2.5小时就可完成全部定向工作。1.操作步骤(1)将偏心楔面线引到弯连接杆锁接头并用⊥形打印规打上⊥形记号(图1)。
In artificial slant and skew correction work, the eccentric wedge orientation is an essential process. At present, there are many directional devices available in the country. However, with conventional drill wedges, drill pipe scribing is an effective method of orientation for drills with a top angle of 5 ° or less. Drill pipe crossed orientation method is simple, simple tools can be made in 100 ~ 300m drilling, 1 to 2.5 hours to complete all the directional work. 1. Procedure (1) Lead the eccentric wedge wire to the bent rod lock and mark the ⊥ shape with a ⊥ mark (Figure 1).