Rapid sealing of bed rock flow paths by a synthetic concentration forming solvent

Yoshida, Hidekazu*; Yamamoto, Koshi*; Asahara, Yoshihiro*; Karukaya, Koichi*; Matsui, Hiroya ; Metcalfe, R.*

The ability of synthetic concretion-forming solvents to seal groundwater flow-paths by rapid precipitation of CaCO $_{3}$ in bed rock flow-paths has been tested by an in-situ experiment in the underground research laboratory (URL) located in Horonobe, northern Hokkaido, Japan. The experiment showed a decrease in permeability to as low as 1/100 to 1/1,000 of the initial permeability over a period of one year. This sealing process can be applied to various activities that require long-term containment of materials underground, for example abandonment of boreholes connected with hydrocarbon extraction, or CO $_{2}$ injection, or sealing of facilities for geological disposal of nuclear wastes.

Language	:	English
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Meeting title	:	Energy Geoscience Conference 2023
Held date	:	2023/05
Location (city)	:	Aberdeen
Location (country)	:	U.K.
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Keywords	:	CCS; synthetic concretion-forming solvents; geological disposal of nuclear wastes
Research Facility	:	深地層研究所
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Article of JAEA R&D Review	:
Cooperating Institute	:	経済産業省資源エネルギー庁

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Registration No. : BB20221417
JAEA Abstracts No. :
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