| 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 sealing member, a ball sealer, a ball seat or a protecting member, which has a rate of decrease in 50% strain compressive stress of 5% or more, particularly preferably 50% or more, after being immersed in water having a temperature of 150°C for 24 hours; a downhole tool equipped with the rubber member; and a method for recovering a hydrocarbon resource using the downhole tool. |
| 申请公布号 |
CA2916373(A1) |
申请公布日期 |
2014.12.31 |
| 申请号 |
CA20142916373 |
申请日期 |
2014.06.24 |
| 申请人 |
KUREHA CORPORATION |
发明人 |
TAKAHASHI, TAKEO;OKURA, MASAYUKI |
| 分类号 |
C08L21/00;C08L7/00;C08L9/00;C08L11/00;C08L23/16;C08L23/22;C08L33/08;C08L67/02;C08L75/06;E21B43/16 |
主分类号 |
C08L21/00 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
|
| 地址 |
|
