| 发明名称 |
VORRICHTUNG ZUM EINZEMENTIEREN EINES GEHAEUSESTRANGES IN EINEM BOHRLOCH |
| 摘要 |
<p>There is disclosed apparatus either in the form of a float shoe 10 or float collar (not shown) for use in cementing a casing string within a well bore, the shoe or collar having blades 25 extending longitudinally along the outer side thereof for centering the shoe or collar, and thus the lower end of the casing string, within the well bore. <IMAGE></p> |
| 申请公布号 |
DE3828481(A1) |
申请公布日期 |
1989.08.24 |
| 申请号 |
DE19883828481 |
申请日期 |
1988.08.22 |
| 申请人 |
MIKOLAJCZYK, RAYMOND F., BROUSSARD, LA., US |
发明人 |
MIKOLAJCZYK, RAYMOND F., BROUSSARD, LA., US |
| 分类号 |
E21B17/10;E21B17/14;E21B21/10;E21B47/01;E21B47/04;E21B47/09 |
主分类号 |
E21B17/10 |
| 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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