发明名称 |
Snap-lock seal for seal valve assembly |
摘要 |
A float apparatus for use in a casing string. The float apparatus includes an outer case having a check valve positioned therein. A body portion which may be comprised of high compressive strength cement affixes the check valve to the outer case. The check valve includes a valve body and a valve element. The valve body defines a valve seat and the valve element is deformable so that it will conform to the shape of the valve seat and seal against flow in the casing.
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申请公布号 |
US2004007359(A1) |
申请公布日期 |
2004.01.15 |
申请号 |
US20020194820 |
申请日期 |
2002.07.11 |
申请人 |
STEVENS MICHAEL D;WEBB EARL D;GREENING AIMEE K |
发明人 |
STEVENS MICHAEL D;WEBB EARL D;GREENING AIMEE K |
分类号 |
E21B21/10;(IPC1-7):E21B33/16 |
主分类号 |
E21B21/10 |
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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