Method and apparatus for filling and circulating fluid in a well

Details Method and apparatus for filling and circulating fluid in a well Method and apparatus for filling and circulating fluid in a well

1995-04-28

1996-12-17

Tsay, Frank

Wells

Processes

Placing or shifting well part

166187, E21B 33124, E21B 33127

Patent

active

055843433

ABSTRACT:
A method and apparths for filling and circulating drilling fluid in a wellbore during casing running operations is disclosed. A fill/circulate tool is placed partially within the upper end of a casing string so that fluid may be pumped into the interior of the casing string. The tool has a self energizing seal element which engages the interior wall of the casing string when the tool is fully lowered therein, said seal element being energized by the pressure of the fluid in the casing string so that fluid pumped into the casing string through the tool is circulated through the casing string and explled from the lower end of the casing string.

REFERENCES:
patent: 4655286 (1987-04-01), Wood
patent: 4817724 (1989-04-01), Funderburg, Jr. et al.
patent: 4869324 (1989-09-01), Holder
patent: 5024273 (1991-06-01), Coone et al.
patent: 5044444 (1991-09-01), Coronado
patent: 5186258 (1993-02-01), Wood et al.

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