Application of Large Diameter Air Drilling Technology in Continental Scientific Drilling

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Application of Large Diameter Air Drilling Technology in Continental Scientific Drilling
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                        ZHANG Qiu-dongZHANG Qiu-dong
No.2 Institute of Geo-environment Survey of Henan
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WANG Xing-minWANG Xing-min
No.2 Geological Survey Institute of Henan Bureau of Geology and Mineral Resources
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ZHANG Xin-chunZHANG Xin-chun
No.2 Institute of Geo-environment Survey of Henan
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XING Xiang-quXING Xiang-qu
No.2 Institute of Geo-environment Survey of Henan
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SHEN Yun-feiSHEN Yun-fei
No.2 Institute of Geo-environment Survey of Henan
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WANG Jun-jieWANG Jun-jie
No.2 Institute of Geo-environment Survey of Henan
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WEI QingWEI Qing
No.2 Institute of Geo-environment Survey of Henan
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Affiliation:No.2 Institute of Geo-environment Survey of Henan,No.2 Geological Survey Institute of Henan Bureau of Geology and Mineral Resources,No.2 Institute of Geo-environment Survey of Henan,No.2 Institute of Geo-environment Survey of Henan,No.2 Institute of Geo-environment Survey of Henan,No.2 Institute of Geo-environment Survey of Henan,No.2 Institute of Geo-environment Survey of Henan
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Abstract:

In Tengchong volcano-geothermal-tectonic zone scientific drilling project of Yunnan, while drilling in multi period volcano eruption formation, the complex conditions of hollow, slag, sand and leakage were serious. The paper introduces the large diameter air drilling tools, equipments and technical measures used in this complex volcano formation, which can be taken as reference to the geological engineering drilling construction in similar formations.

Key words:continental scientific drilling; volcano formation; air drilling technology; Tengchong

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Received:January 02,2014
Revised:March 13,2014
Adopted:March 21,2014
Online: May 28,2014
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