Flow diverter

Details Flow diverter Flow diverter

1982-12-13

1984-04-24

Purser, Ernest R.

Wells

Above ground apparatus

With seal for reciprocating member

251 1A, 137869, E21B 3306

Patent

active

044442505

ABSTRACT:
Flow diverter apparatus is disclosed having a housing and a piston and annular packer disposed therein. The diverter has passages in the piston and housing walls providing fluid communication between the borehole and a vent line. A valve in the vent line is opened before the packer of the apparatus is closed about a tubular member in the bore of the apparatus or completely closes the vertical flow path of the bore of the apparatus when no object is therein, thereby diverting pressurized borehole fluid away from the rig equipment and personnel.

REFERENCES:
patent: 1027344 (1912-05-01), Lally
patent: 1455731 (1923-05-01), Kelly
patent: 1467877 (1923-09-01), Rea
patent: 1944840 (1934-01-01), Humason
patent: 2231221 (1941-02-01), Rector
patent: 2484622 (1949-10-01), Hartman
patent: 2609836 (1952-09-01), Knox
patent: 2911997 (1959-11-01), Schramm et al.
patent: 3791442 (1974-02-01), Watkins
patent: 4071085 (1978-01-01), Grable et al.
patent: 4192376 (1980-03-01), Lissmyr
patent: 4378849 (1983-04-01), Wilks

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