发明名称 FLOATING APPARATUS AND METHOD FOR FABRICATING THE APPARATUS
摘要 A floating apparatus for use in a casing string is provided. The apparatus includes an outer sleeve having a valve centrally positioned therein. A cement body is affixed to the check valve and the housing by use of a bonding material.
申请公布号 EP2954154(A4) 申请公布日期 2016.11.30
申请号 EP20140749670 申请日期 2014.01.08
申请人 HALLIBURTON ENERGY SERVICES, INC. 发明人 DARBE, ROBERT, PHILLIP;ROGERS, HENRY, EUGENE;JONES, PAUL, JOSEPH;ROWE, MISTY, DAWN;KARCHER, JEFFERY, DWANE;HELMS, LONNIE, C.
分类号 E21B34/06;E21B33/13 主分类号 E21B34/06
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