定向钻孔在穿越河道时的设计施工及体会
Jilin Geology（2011）
Abstract
在八屋—长春输气管线佟家窝堡北穿越河道时,采用定向钻孔技术。本文阐述了冬季定向钻孔穿越超宽河道基底砂层的设计要点、施工工艺。
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Key words
gas pipeline,sand layer,directional drilling,construction,design
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