HYDRAULIC VIBRATOR Russian patent published in 2018 - IPC E21B28/00 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil and gas industry and can be used to intensify oil extraction or water injection. Hydraulic vibrator contains a body with hard-mounted barrel with a bottom hole and a spool, fitted with ball bearings on the barrel. Spool and barrel are made with slotted recesses arranged at an angle to their generatrix. Slots of the spool are located in the opposite direction to the slotted recesses of the trunk. On the inner wall of the body opposite to spool made the same longitudinal recesses with two inclined walls connected at the bottom of the recess, while in each recess one of the inclined walls is perpendicular to the slit slot of the spool when an open space of slit slot of the spool is located opposite this wall.

EFFECT: increase in flow of oil to the well is provided.

1 cl, 3 dwg