Counterbalanced pumps and method of using same

Details Counterbalanced pumps and method of using same Counterbalanced pumps and method of using same

1980-12-29

1983-09-20

Kee Chi, James

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74 8922, 74590, 74591, 166 68, 187 94, 254266, 417415, F16H 2902

Patent

active

044048637

ABSTRACT:
An oscillatory pumping system of the type having sheave chains wound in opposing directions over a mandrel, one sheave chain connecting to a rod string of a well and another supporting a counterbalance, is improved to include both rate and position sensors which, through a logic system control the application and reversal of power. The system is further improved by selection of geometry and in engagement features such that upon full playout of either chain the time of stroke reversal is shortened. This counterbalanced pumping system may be pivotally mounted on a tower thus allowing for installation of pump seals above ground.

REFERENCES:
patent: 1637078 (1927-07-01), Hill
patent: 1685238 (1928-09-01), McDowell
patent: 1923012 (1933-08-01), Parker
patent: 3001412 (1961-09-01), Babbitt
patent: 3285081 (1966-11-01), Kuhns et al.
patent: 3528305 (1970-09-01), Kuhns et al.
patent: 3695117 (1972-10-01), Ewing et al.
patent: 4062640 (1977-12-01), Gault
patent: 4197766 (1980-04-01), James
patent: 4251059 (1981-02-01), Fougea

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