Drilling fluid for Dome F Project in Antarctica
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概要
- 論文の詳細を見る
At Dome F, one of the summits of the East Antarctic Ice Sheet, a very deep ice-coring operation is to be carried out by the Japanese Antarctic Research Expedition from 1995. Since it will take two years to complete the coring up to about 3000m depth, the borehole should be filled with proper drilling fluid to prevent borehole closure during the operation. This paper is a report on our investigations for searching for the proper drilling fluid which can be used in the very cold environment at Dome F. Although the investigations are still in progress, three kinds of fluid were chosen as drilling fluid candidates. They are : 1) n-butyl acetate, 2) "IP-solvent" with densifier and 3) Silicone Oil. Their properties were investigated and compared in terms of density and viscosity, which are essential requirements for a drilling fluid. As a result, it was shown that n-butyl acetate and IP-solvent with densifier can be used as the drilling fluid. However, the use of n-butyl acetate is impossible without sufficient ventilation at the coring site or other action to dispose of its vapor. When the use of IP-solvent with densifier is considered, the choice of proper densifier is also a problem.
- 国立極地研究所の論文
著者
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Fujii Yoshiyuki
National Institute of Polar Research, Research Organization of Information and Systems
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Mae Shinji
Department of Applied Physics, Hokkaido University
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Fujita Shuji
Department of Applied Physics, Hokkaido University
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Yamada Tomomi
Institute Of Low Temperature Science Hokkaido University
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Naruse Renji
Institute of Low Temperature Science, Hokkaido University
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AZUMA Nobuhiko
Department of Mechanical Engineering, Nagaoka University of Technology
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Morimoto S
National Institute Of Polar Research Organization Of Information And Systems
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Fujita Shuji
National Institute of Polar Research
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Morimoto S
National Inst. Polar Res. Tokyo Jpn
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Fujita Shuji
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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Azuma N
Nagaoka University Of Technology
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Azuma Nobuhiko
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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Fujii Yoshiyuki
National Institute Of Polar Research
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Fujii Yoshiuki
National Institute of Polar Research
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Mae S
National Institute Of Polar Research Research Organization Of Information And Systems
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Mae Shinji
Department Of Applied Physics Hokkaido University
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Mae Shinji
Department Of Applied Physics Faculty Of Engineering Hokkaido University
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Naruse Reij
Institute Of Low Temperature Science Hokkaido University
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Naruse Renji
Institute Of Low Temperature Science Hokkaido University
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Mae Shinji
National Institute For Resources And Environment
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Fujita Shuji
Faculty Of Engineering Hokkaido University
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- Preface
- 5. Surface Meteorological Data during Oversnow Traverses(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 4. Snow Temperature Data at Dome Fuji Station(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 3. Surface Snow Density around Dome Fuji Station(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 2. Net Accumulation of Snow at Dome Fuji Station(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
- 1. Outline of Field Observations during 1996-1997(Glaciological Data Collected by the 37th Japanese Antarctic Research Expedition during 1996-1997)
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