FIELD: engines and pumps.
SUBSTANCE: invention relates to oil production, particularly to oil rod-type pumps. Maximum pump travel and shortest cycle time are calculated proceeding from all statistical and dynamic characteristics of downhole and surface components, primary motor angular speed being unlimited. Restraints, as to structural strength and fatigue strength, are used in optimisation calculation to ensure safe operation at maximum pumped volume and minimum power consumption. Primary motor designed optimum speed is set for rod pump with the help of jack balance beam, major-travel unit or hydraulic pumping unit. It can also be set by controlling primary motor rpm, acceleration and torque, or by adjusting pressure and flow rate in pump system.
EFFECT: optimised rpm of rod pump primary motor, maximum increase in oil extraction and lower operating costs.
18 cl, 6 dwg
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