Packer type groundwater sampling system and water sampling method

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United States of America Patent

PATENT NO 5896926
SERIAL NO

08679633

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention provides a system and a method for sampling groundwater under in-situ condition state in reliable, efficient and economic manner without disturbing environment of formation water present in under-ground layer. There are provided a continuous water sampling process and a batch style water sampling process for sampling formation water by confirming the same environment as that of the groundwater in the under-ground layer. After drilling water has been removed by the continuous water sampling process, formation water is repeatedly sampled by the batch style water sampling process, and a downhole system equipped with the continuous water sampling process and the batch style water sampling process is designed in such structure that it is moved up and down in a casing pipe and inserted into or removed from a packer system in the hole.

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Patent Owner(s)

Patent OwnerAddress
JAPAN NUCLEAR CYCLE DEVELOPMENT INSTITUTENAKA-GUN IBARAKI-KEN

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hama, Katsuhiro Gifu, JP 1 8
Mori, Hiroshi Tokyo, JP 269 3311
Nakano, Katsushi Gifu, JP 60 933
Nakashima, Yukifusa Tokyo, JP 1 8
Sakai, Yukio Tokyo, JP 38 339
Seo, Toshihiro Gifu, JP 1 8
Teshima, Kenji Tokyo, JP 9 138
Yanagisawa, Koichi Gifu, JP 19 244

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