FIELD: oil and gas industry.
SUBSTANCE: invention relates to oil and gas industry and is intended for use in sucker-rod pumping units for pivot rod string turn at simultaneous separate operation of wells. Downhole sucker-rod pump unit includes pumping unit, rocker, balancer head consisting of two jaws and arc with convex cylindrical walls. Also, the device comprises a rod string suspended to the balancer head by means of a rope, and a rod reel with a handle, to the free end of which the lower end of the flexible element is connected. Annular groove is made on convex cylindrical wall of one jaw, coaxially with axis of rocker head turn. It has the shape of a semicircle in cross section. Flexible element lies in the annular groove and the upper end is connected to the upper end of the jaw, in which the groove is made.
EFFECT: overall dimensions decrease.
1 cl, 5 dwg
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