Extendable casing circulator and method

Details Extendable casing circulator and method Extendable casing circulator and method

1996-03-27

1997-11-04

Tsay, Frank

Wells

Processes

Operating valve, closure, or changeable restrictor in a well

166387, 166 853, E21B 3300

Patent

active

056829523

ABSTRACT:
A casing circulator 30, 54, 162 is provided for pumping fluid into a casing string to fill the casing string, and for temporarily sealing with an upper end of the casing string to circulate pressurized fluid through the casing string. The casing circulator includes a mandrel 130 axially movable with respect to a circulator body 84 from a retracted position to an extended position in response to fluid pressure acting on a piston 126. In the retracted position, the casing circulator is positioned with respect to the casing string for filling the casing string with fluid. When moved to its extended position, a sealing element 56, 158, 164 supported on the mandrel is in sealing engagement with the upper end of the casing string to circulate fluid through the casing string. According to the method of the invention, pressurized fluid is applied to the casing circulator to move the mandrel to the extended position, and may also be used to expand the sealing element into sealing engagement with the casing string.

REFERENCES:
patent: 4817724 (1989-04-01), Funderburg, Jr. et al.
patent: 4869324 (1989-09-01), Holder
patent: 4997042 (1991-03-01), Jordan et al.
patent: 5024273 (1991-06-01), Coone et al.
patent: 5044444 (1991-09-01), Coronado
patent: 5186258 (1993-02-01), Wood et al.
patent: 5191939 (1993-03-01), Stokley
patent: 5584343 (1996-12-01), Coone
patent: 5605195 (1997-02-01), Eslinger et al.

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