Title:
SHAPED MATERIAL FOR DOWNHOLE TOOL MEMBER, DOWNHOLE TOOL MEMBER, AND DOWNHOLE TOOL
Document Type and Number:
WIPO Patent Application WO/2017/111159
Kind Code:
A1
Abstract:
This shaped material for downhole tool member is a magnesium alloy in which 0 wt% or more and less than 0.3 wt% of a rare earth metal, a metal material other than magnesium and a rare earth metal, and 0.1 to 20 wt% of a decomposition promoter are dispersed in a phase containing 70-95 wt% of magnesium, the average particle diameter of the metal material being 1-300 μm, the tensile strength being 200-500 MPa, and the decomposition speed in a 2% potassium chloride aqueous solution at 93°C being 20 mg/cm2 to 20,000 mg/cm2 per day. A high-strength, readily decomposable downhole tool is realized thereby.
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Inventors:
KOBAYASHI FUMINORI (JP)
OKURA MASAYUKI (JP)
TAKAHASHI TAKEO (JP)
OKURA MASAYUKI (JP)
TAKAHASHI TAKEO (JP)
Application Number:
PCT/JP2016/088681
Publication Date:
June 29, 2017
Filing Date:
December 26, 2016
Export Citation:
Assignee:
KUREHA CORP (JP)
International Classes:
C22C23/02; B21C23/00; B22D21/04; C22F1/06; E21B33/12; C22F1/00
Domestic Patent References:
| WO2015060246A1 | 2015-04-30 | |||
| WO2015057755A1 | 2015-04-23 |
Foreign References:
| JP2015151692A | 2015-08-24 | |||
| CN103898384A | 2014-07-02 | |||
| CN104004950A | 2014-08-27 | |||
| CN104651691A | 2015-05-27 | |||
| US20140251691A1 | 2014-09-11 |
Other References:
KARIYA, SHOTA ET AL.: "Materials Design for Corrosion Rate Control in PM AZ91 Mg Alloy by Fe Addition", TRANSACTIONS OF JWRI, vol. 43, no. 2, December 2014 (2014-12-01), pages 31 - 36, XP055508886, ISSN: 0387-4508
YOICHI KANAMORI; KATSUYA HIO: "Industrial Research Division Research Report", vol. 31, 2007, MIE PREFECTURAL SCIENCE AND TECHNOLOGY PROMOTION CENTER, pages: 30 - 35
See also references of EP 3395972A4
YOICHI KANAMORI; KATSUYA HIO: "Industrial Research Division Research Report", vol. 31, 2007, MIE PREFECTURAL SCIENCE AND TECHNOLOGY PROMOTION CENTER, pages: 30 - 35
See also references of EP 3395972A4
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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