Methods and apparatus for controlling long-stroke pumping units

Details Methods and apparatus for controlling long-stroke pumping units Methods and apparatus for controlling long-stroke pumping units

1992-03-10

1993-09-21

Melius, Terry Lee

Wells

Processes

Producing the well

166 685, 166105, 417 18, E21B 4312

Patent

active

052460762

ABSTRACT:
A variable-speed drive controller and associated methods are disclosed for reciprocated lifting systems, particularly long-stroke, fluid-pumping systems such as certain oil-producing equipment. A variable-speed drive is controlled through an electronic feedback loop by a programmable controller, which varies the speed of the drive when sensors detect the passage of the reciprocating mechanism. The controller can be set to slow the drive when the reciprocating mechanism reaches the end of the stroke, to permit faster production of fluid without increased mechanical wear on the reciprocating mechanism or increased stress on the lifting string. The controller also can be set to slow the drive on the downstroke, such as to permit faster production of fluid when pumping viscous liquid.

REFERENCES:
patent: 4102394 (1979-07-01), Botts
patent: 4145161 (1979-03-01), Skinner
patent: 4390321 (1983-06-01), Langlois et al.
patent: 4487061 (1984-12-01), McTamaney et al.
patent: 4490094 (1984-12-01), Gibbs
patent: 4661751 (1987-04-01), Werner
patent: 4916959 (1990-04-01), Lively
patent: 4935685 (1990-06-01), Justus et al.
patent: 4971522 (1990-11-01), Butlin
patent: 4973226 (1990-11-01), McKee
patent: 5006044 (1991-04-01), Walker, Sr. et al.
patent: 5044888 (1991-09-01), Hester, II

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