发明名称 |
RUBBER MEMBER FOR DOWNHOLE TOOLS, DOWNHOLE TOOL, AND METHOD FOR RECOVERING HYDROCARBON RESOURCE |
摘要 |
A rubber member for downhole tools, preferably a seal member, ball sealer, ball seat, or protecting member, of which a decrease rate of 50% strain compressive stress after immersion for 24 hours in 150° C. water relative to 50% strain compressive stress before immersion is not less than 5%, and preferably not less than 50%; a downhole tool comprising the rubber member; and a method for recovering a hydrocarbon resource using the downhole tool. |
申请公布号 |
US2016108165(A1) |
申请公布日期 |
2016.04.21 |
申请号 |
US201514979844 |
申请日期 |
2015.12.28 |
申请人 |
Kureha Corporation |
发明人 |
TAKAHASHI TAKEO;OKURA MASAYUKI |
分类号 |
C08G18/32;E21B33/12 |
主分类号 |
C08G18/32 |
代理机构 |
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代理人 |
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主权项 |
1. A rubber member for downhole tools, of which a decrease rate of a 50% strain compressive stress after immersion for 24 hours in 150° C. water relative to a 50% strain compressive stress before immersion is not less than 5%. |
地址 |
Tokyo JP |