FIELD: oil production, exploitation of low-productivity wells. SUBSTANCE: gear includes well sucker-rod pump with hydraulic booster. Hydraulic booster is cylindrical chamber with discharge valve and piston made fast to plunger of pump. Holes periodically shut by piston making reciprocating motions are drilled in wall of chamber of hydraulic booster. EFFECT: enhanced efficiency of process of oil recovery thanks to wave action on recovered fluid, on face zone of well and on productive pool as whole. 1 dwg
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