DOWNHOLE TOOL MEMBER FOR HYDROCARBON RESOURCE RECOVERY

Title:

DOWNHOLE TOOL MEMBER FOR HYDROCARBON RESOURCE RECOVERY

Document Type and Number:

WIPO Patent Application WO/2014/010267

Kind Code:

A1

Abstract:

A downhole tool member for hydrocarbon resource recovery, characterized by comprising a molded article of a polyglycolic acid resin in which an inorganic or organic short fiber reinforcing material is blended, the initial thickness reduction rate (average value for four hours of retention) when retained in water at 120°C being no more than 0.8 times the initial thickness reduction rate of a molded article of polyglycolic acid resin only, and the terminal thickness reduction rate after the thickness has been reduced to 50% or less of the initial thickness being greater than 1.5 times the initial thickness reduction rate. A downhole tool member is thereby provided that can be designed with more precise decay characteristics as a downhole tool member for forming all or a portion of a temporary-use tool for forming or repairing a downhole tool for recovering hydrocarbon resources such as oil and gas.

Inventors:

OKURA MASAYUKI
SAIJO HIKARU
YOSHIDA KATSUMI
SATO HIROYUKI

Application Number:

PCT/JP2013/057054

Publication Date:

January 16, 2014

Filing Date:

March 13, 2013

Export Citation:

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Assignee:

KUREHA CORP (JP)

International Classes:

E21B33/12; C08K7/02; C08L67/04; C09K8/88; E21B29/00; E21B33/13

Domestic Patent References:

WO2013183363A1

2013-12-12

Foreign References:

US20090078408A1	2009-03-26
US20090286700A1	2009-11-19
US20080200352A1	2008-08-21
JP2008088364A	2008-04-17
US20050205266A1	2005-09-22
US20050205265A1	2005-09-22
US20090101334A1	2009-04-23
US7621336B2	2009-11-24
US7762342B2	2010-07-27

Other References: