The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 1999
Filed:
Jul. 10, 1996
Katsuhiro Hama, Gifu, JP;
Toshihiro Seo, Gifu, JP;
Koichi Yanagisawa, Gifu, JP;
Katsushi Nakano, Gifu, JP;
Hiroshi Mori, Tokyo, JP;
Yukifusa Nakashima, Tokyo, JP;
Yukio Sakai, Tokyo, JP;
Kenji Teshima, Tokyo, JP;
Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo, JP;
Kiso-Jiban Consultants Co., Ltd., Tokyo, JP;
Abstract
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.