| 发明名称 |
Multi-Component Disappearing Tripping Ball and Method for Making the Same |
| 摘要 |
A tripping ball including two or more relatively dissolution resistant parts of a ball and an adherent dissolvable material binding the two or more parts of the ball together and method for making a tripping ball as described.
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| 申请公布号 |
US2011132621(A1) |
申请公布日期 |
2011.06.09 |
| 申请号 |
US20090633677 |
申请日期 |
2009.12.08 |
| 申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
AGRAWAL GAURAV;XU ZHIYUE |
| 分类号 |
E21B31/00;B23K1/00;B32B37/14 |
主分类号 |
E21B31/00 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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