E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/14 (2006.01) E21B 17/14 (2006.01) E21B 34/06 (2006.01)
Patent
CA 2158238
A floating apparatus for use in a casing string. The apparatus includes an outer sleeve having a check valve centrally positioned therein. A body portion, which may be comprised of high compressive strength cement, is affixed to the check valve and the housing. The body portion has an upper end and a lower end. An upper seal is disposed above the upper end of the body and sealingly engages the housing and the outer sleeve. A lower seal is disposed in the sleeve below the lower end of the body portion, and sealingly engages the valve housing and the outer sleeve, so that fluid flowing through the outer sleeve cannot communicate with the body portion.
Murray Dick A.
Rogers Henry E.
Sullaway Bobby L.
Company Halliburton
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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