VIBROACID BOTTOMHOLE ZONE STIMULATION DEVICE Russian patent published in 2022 - IPC E21B28/00 E21B43/25 E21B43/27 

FIELD: medicine.

SUBSTANCE: invention relates to oil industry, namely to hydraulic vibrators, and is intended for creation of vibration wave action with hydrochloric acid solution on bottomhole zone of oil formations. Device for vibroacid action on the formation contains an acid-proof housing with an electric motor and a crank gear (CG) tightly located in it and a working chamber of cylindrical shape with inlet and outlet holes. CG is made with possibility of actuation from electric motor shaft by means of gearing and is pivotally connected to hollow gate bushing by means of centralizer of cylindrical shape, providing reciprocal movement of hollow gate bushing in cavity of working chamber and simultaneous periodic opening and closing of inlet and outlet holes. Device additionally comprises a pressure sensor for measuring pressure in the area of the outlet hole and transmitting data about it to the control station and subsequent adjustment of the electric motor rotation frequency and pressure change in the outlet area by the current frequency converter from the control station.

EFFECT: efficient acid stimulation.

1 cl, 3 dwg