Well pumping

Details Well pumping Well pumping

1995-03-20

1996-07-30

Dang, Hoang C.

Wells

Processes

Assembling well part

74 182, 166 811, E21B 3308

Patent

active

055402836

ABSTRACT:
A method and apparatus for protecting a polished rod of a pumping unit so that the portion of the polished rod that passes out of the top of a stuffing box of a wellhead on the upstroke of the polished rod is protected from the environment surrounding the wellhead. The method and apparatus also assist with containment of well fluids which may escape from the stuffing box.

REFERENCES:
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patent: 3186722 (1965-06-01), Johnston
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patent: 3353606 (1967-11-01), Dyer
patent: 3369411 (1968-02-01), Hines
patent: 3796103 (1974-03-01), Winfield, Jr.
patent: 3953037 (1976-04-01), Winfield, Jr.
patent: 4951743 (1990-08-01), Henderson
patent: 5150751 (1992-09-01), Burton

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