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.
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
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