Drilling fluid for Dome F Project in Antarctica
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 drillin...
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ftnipr:oai:nipr.repo.nii.ac.jp:00002239 2023-05-15T13:48:00+02:00 Drilling fluid for Dome F Project in Antarctica Shuji Fujita Tomomi Yamada Renji Naruse Shinji Mae Nobuhiko Azuma Yoshiyuki Fujii 1994-03 https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2239 http://id.nii.ac.jp/1291/00002239/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2239&item_no=1&attribute_id=18&file_no=1 en eng Department of Applied Physics, Faculty of Engineering, Hokkaido University/Institute of Low Temperature Science, Hokkaido University/Institute of Low Temperature Science, Hokkaido University/Department of Applied Physics, Faculty of Engineering, Hokkaido University/Department of Mechanical Engineering, Nagaoka University of Technology/National Institute of Polar Research https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2239 http://id.nii.ac.jp/1291/00002239/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 49, 347-357(1994-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2239&item_no=1&attribute_id=18&file_no=1 Departmental Bulletin Paper P(論文) 1994 ftnipr 2022-11-12T19:43:03Z 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. Report Antarc* Antarctic Antarctica Ice Sheet Memoirs of National Institute of Polar Research Polar Research National Institute of Polar Research Repository, Japan Antarctic East Antarctic Ice Sheet Dome F ENVELOPE(39.700,39.700,-77.317,-77.317) |
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Open Polar |
collection |
National Institute of Polar Research Repository, Japan |
op_collection_id |
ftnipr |
language |
English |
description |
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. |
format |
Report |
author |
Shuji Fujita Tomomi Yamada Renji Naruse Shinji Mae Nobuhiko Azuma Yoshiyuki Fujii |
spellingShingle |
Shuji Fujita Tomomi Yamada Renji Naruse Shinji Mae Nobuhiko Azuma Yoshiyuki Fujii Drilling fluid for Dome F Project in Antarctica |
author_facet |
Shuji Fujita Tomomi Yamada Renji Naruse Shinji Mae Nobuhiko Azuma Yoshiyuki Fujii |
author_sort |
Shuji Fujita |
title |
Drilling fluid for Dome F Project in Antarctica |
title_short |
Drilling fluid for Dome F Project in Antarctica |
title_full |
Drilling fluid for Dome F Project in Antarctica |
title_fullStr |
Drilling fluid for Dome F Project in Antarctica |
title_full_unstemmed |
Drilling fluid for Dome F Project in Antarctica |
title_sort |
drilling fluid for dome f project in antarctica |
publisher |
Department of Applied Physics, Faculty of Engineering, Hokkaido University/Institute of Low Temperature Science, Hokkaido University/Institute of Low Temperature Science, Hokkaido University/Department of Applied Physics, Faculty of Engineering, Hokkaido University/Department of Mechanical Engineering, Nagaoka University of Technology/National Institute of Polar Research |
publishDate |
1994 |
url |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2239 http://id.nii.ac.jp/1291/00002239/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2239&item_no=1&attribute_id=18&file_no=1 |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic East Antarctic Ice Sheet Dome F |
geographic_facet |
Antarctic East Antarctic Ice Sheet Dome F |
genre |
Antarc* Antarctic Antarctica Ice Sheet Memoirs of National Institute of Polar Research Polar Research |
genre_facet |
Antarc* Antarctic Antarctica Ice Sheet Memoirs of National Institute of Polar Research Polar Research |
op_relation |
https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2239 http://id.nii.ac.jp/1291/00002239/ AA00733561 Memoirs of National Institute of Polar Research. Special issue, 49, 347-357(1994-03) https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2239&item_no=1&attribute_id=18&file_no=1 |
_version_ |
1766248358507184128 |