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当井壁因不规则引发井下复杂情况,尤其是出现缩径时,采用此工具修整井壁,畅通井眼,达到解除井眼故障,以顺利进行后续施工。
When the borehole wall causes complicated underground conditions due to irregularities, especially when the diameter is reduced, the tool is used to trim the borehole wall and smooth the borehole to relieve the borehole failure so as to facilitate subsequent construction.