Pumping well blow-out preventer

Details Pumping well blow-out preventer Pumping well blow-out preventer

1977-03-25

1978-08-29

Purser, Ernest R.

Wells

Automatic

137 68R, 166 84, 251 1R, E21B 3306, E21B 1700

Patent

active

041097130

ABSTRACT:
The blow-out preventer takes the form of a four-way fitting arranged to be substituted for the conventional three-way fitting in a pumping well head between the pipe string and upper stuffing box. The four-way fitting includes a spring-biased ball which will be ejected to the central portion of the fitting should the polished rod break or otherwise be ejected, the resulting oil flow urging the ball against the under entrance portion of the stuffing box to block oil flow until such time as the normal Radigan valve can be closed.

REFERENCES:
patent: 1627945 (1927-05-01), Wigle
patent: 2224657 (1940-12-01), Rodgers
patent: 2563155 (1951-08-01), Cardwell
patent: 3532163 (1970-10-01), Ecuer
patent: 3815925 (1974-06-01), Mattoon
patent: 4064952 (1977-12-01), Lechrer

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