REUSABLE HYDRAULIC PULSE MODULE FOR TREATMENT OF BOTTOMHOLE FORMATION ZONE Russian patent published in 2022 - IPC E21B43/25 E21B28/00 E21B43/16 

FIELD: oil production.

SUBSTANCE: invention relates to intensification of oil production process by cleaning bottomhole formation zone or hydraulic fracturing. Reusable hydraulic pulse module consists of a housing lowered on tubing, made in the form of two cylinders of smaller and larger diameters, packers and a pressure gauge. Cylinders of smaller and larger diameters form an implosion chamber with an extended upper access. At that, in lower part of cylinder of smaller diameter there is a spring-loaded shutoff valve, which opens access to outlet openings of working agent. In addition, a blind plunger is lowered into the implosion chamber on the rods, the movements of which create compression or rarefaction in it, and the pressure gauge is located independently on the branch pipe, directly in the zone of generation of hydraulic pulses.

EFFECT: simplified design, reduced time for treatment of bottomhole formation zone or hydraulic fracturing.

1 cl, 2 dwg