FGC－15型大直径单头潜孔锤钻具系统研制
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引用本文：蒋荣庆,殷琨,王茂森.FGC－15型大直径单头潜孔锤钻具系统研制[J].钻探工程,1995,(5):17-19,47.
JIANG Rong-qing,YING Kun,WANG Mao-shen. Development of FGC-15 Single Headed Large Diameter DTH Drilling System[J]. Drilling Engineering, 1995,(5):17-19,47.
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作者单位
蒋荣庆 长春地质学院 
殷琨 长春地质学院 
王茂森 长春地质学院 
中文摘要:大直径单头潜孔锤与三通道气水龙头、主动钻杆、王通道钻杆、加重导正器等配套，可实现大直径潜孔锤碎岩钻进、泵吸反循环排渣、泥浆护壁、压气闭路循环等相结合的先进钻进工艺，是解决大直径硬质基岩及卵砾石钻进的有效机具。文中介绍了钻具研制过程及设计内容。
中文关键词:大直径单头潜孔锤，三通道钻具，液体反循环，压气闭路循环
 
Development of FGC-15 Single Headed Large Diameter DTH Drilling System
Abstract:Complete with triple air/water swivel,kelly bar,triple drillpipe,heavy centralizer,etc,,the singleheaded large diameter DTH hammer can be used to perform advanced drilling technique which combines DTHrock drilling,cuttings removal with reverse circulation by pump suction,hole wall protection with mud and pres-surized air circulation in a closed loop.It is an effective tool to tackle large diameter hard rock and boulderdrilling problems,Development and design of the tool are described.
keywords:single headed large diameter DTH hammer,triple drilling tool, fluid reverse circulation, pres-surized air circulation in a closed loop,
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