E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/08 (2006.01) E21B 33/124 (2006.01)
Patent
CA 2180881
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.
Hama Katsuhiro
Mori Hiroshi
Nakano Katsushi
Nakashima Yukifusa
Sakai Yukio
Cassan Maclean
Doryokuro Kakunenryo Kaihatsu Jigyodan
Japan Nuclear Cycle Development Institute
Kiso-Jiban Consultants Co. Ltd.
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