Leakproof floating apparatus and method for fabricating said app

Details Leakproof floating apparatus and method for fabricating said app Leakproof floating apparatus and method for fabricating said app

1994-09-14

1995-12-05

Buiz, Michael Powell

Wells

Valves, closures or changeable restrictors

Fluid operated

E21B 3406

Patent

active

054720532

ABSTRACT:
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.

REFERENCES:
patent: 4712619 (1987-12-01), Stepp et al.
patent: 4729432 (1988-03-01), Helms
Halliburton Casing Sales Manual, Oct. 8, 1993, pp. 1-13 and 1-23.
Halliburton Services, "Floating Equipment" catalog.

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