Anti-corrosive stuffing box assembly

Details Anti-corrosive stuffing box assembly Anti-corrosive stuffing box assembly

1988-10-24

1990-01-23

Hannon, Thomas R.

Bearings

Linear bearing

Combined with seal or guard

166 84, 277123, 277125, 277DIG6, 384 9, 384 97, F16C 3372, E21B 3300

Patent

active

048963674

ABSTRACT:
In a well pumping unit of the type employing a polished rod, a stuffing box is disposed at the upper end of the wellhead which has axially spaced bearing assemblies, and packing coils positioned between a bearing section at either end of each assembly to guide the polished rod for reciprocal movement along a vertical path through the wellhead, each bearing section having annular portions connected together in end-to-end relation with one portion composed of brass and another portion composed of zinc which is capable of undergoing a reduction reaction with the oxygen present in the liquids and gases to effectively reduce corrosion of the polished rod.

REFERENCES:
patent: 354658 (1935-12-01), Stockfleth
patent: 1453324 (1923-05-01), Purtle
patent: 1735193 (1929-11-01), Wilson
patent: 2137853 (1938-11-01), Nixon
patent: 2466239 (1949-04-01), Holcombe
patent: 2776172 (1957-01-01), Deitrickson
patent: 2806721 (1957-09-01), Fagg et al.
patent: 3734181 (1973-05-01), Shaffer
patent: 3928211 (1975-12-01), Browning et al.
patent: 4045591 (1977-08-01), Payne
patent: 4157732 (1979-06-01), Fonner
patent: 4494607 (1985-01-01), Ford et al.

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