New Method for Overburden Green Drilling-Air Downhole Hammer Core Drilling with Casing
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摘要: 针对覆盖层的特征和钻进特点,结合环境保护对地质勘查的新要求,将常规回转取心钻进与潜孔锤跟管钻进优化组合,形成了一种覆盖层钻探新方法—空气潜孔锤取心跟管钻进。介绍了潜孔锤取心跟管钻进方法的要点;从钻探工程经济性和环保因素,提出以潜孔锤取心钻进为主、解决覆盖层钻进效率低和质量差等技术难题的新思路。Abstract: A new combination of core drilling with casing and downhole hammer technology is discussed in this paper, which is designed for the characteristics of overburden drilling combining with the new requirements of environmental protection for geological exploration.In consideration of economic and environmental impacts of drilling projects, this technology is centered on downhole hammer drilling, which can provide a new solution for the problem of low drilling efficiency and poor quality.
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Key words:
- downhole hammer /
- drilling with casing /
- core drilling /
- overburden
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