Polished rod protection and sealing device

Details Polished rod protection and sealing device Polished rod protection and sealing device

1991-12-02

1993-11-02

Dang, Hoang C.

Wells

Above ground apparatus

With seal for reciprocating member

277 64, 277 66, E21B 3308

Patent

active

052578127

ABSTRACT:
A reciprocable polished rod projects through a housing and a stuffing box downstream of the housing. A plurality of packings are provided in the upper portion of the housing and contacting the rod preventing fluid leakage from the housing. A retainer holds the packings in place and adjustable pressure is exerted on the retainer and on the packings.

REFERENCES:
patent: 450518 (1891-04-01), Mayer
patent: 1971542 (1934-08-01), Taylor
patent: 3270810 (1966-09-01), Johnston
patent: 3796103 (1974-03-01), Winfield, Jr.
patent: 3815925 (1974-06-01), Mattoon
patent: 3967678 (1976-07-01), Blackwell
patent: 4099562 (1978-07-01), Mattoon
patent: 4907650 (1990-03-01), Heinonen
patent: 4917190 (1990-04-01), Coppedge

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