DOWNHOLE TOOL CONTAINING DOWNHOLE-TOOL MEMBER CONTAINING REACTIVE METAL AND DOWNHOLE-TOOL MEMBER CONTAINING DEGRADABLE RESIN COMPOSITION, AND WELL-DRILLING METHOD

Canada Patent

PATENT NO 2961932
APP PUB NO CA-2961932-A1
SERIAL NO

2961932

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Abstract

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A downhole tool, provided with: a downhole-tool member containing a reactive metal; a downhole-tool member containing a degradable resin composition that promotes degradation of the reactive metal, preferably a degradable resin composition containing a degradable resin that generates an acid by degradation or a degradable resin composition containing a degradable resin and an inorganic substance or organic substance that promotes degradation of the reactive metal; and, as desired, a degradable rubber member. Moreover, a well-drilling method using this downhole tool.

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Patent Owner(s)

Patent OwnerAddress
KUREHA CORPJPTOKYO JAPAN TOKYO METROPOLIS

International Classification(s)

Inventor(s)

Inventor Name Address
TAKAHASHI SHINYA C/O MINASE RESEARCH INSTITUTE ONO PHARMACEUTICAL CO LTD 1-1 SAKURAI 3-CHOME SHIMAMOTO-CHO MISHIMA-GUN OSAKA 618-8585
TAKAHASHI TAKEO TOKYO 103-8552
OKURA MASAYUKI IBARAKI 311-3436

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