摘要
论述了水平定向钻系统的组成、功能、穿越工程施工工艺和技术要点。
The composition and functions of horizontal directional drilling system, and the construction process and technical key points of crossing engineering are discussed.
出处
《煤气与热力》
2007年第9期1-4,共4页
Gas & Heat
关键词
水平定向钻
控向系统
导向孔
回拖
horizontal directional drilling
direction control system
pilot hole
pulling back
