ROTARY HYDRAULIC VIBRATOR Russian patent published in 2015 - IPC E21B28/00 

FIELD: oil and gas industry.

SUBSTANCE: rotary hydraulic vibrator includes a hollow body with spool installed coaxially to it. The body comprises an axial cylindrical channel with process openings in it matched by channels to the spool openings. The body is blinded from below. The spool is installed at the support coaxially to the body. In the axial cylindrical channel process openings are made by four openings in two rows, at that they are radial and mutually perpendicular in pairs. Spool openings matched to them and placed in the upper row are made radial, while the openings placed in the lower row and matched by a grove are offset tangentially. Jet nozzles are installed in the spool openings. Spool openings are made so that replaceable jet nozzles of different diameter and configuration may be set in them.

EFFECT: improved quality of cleanup for the reservoir perforated interval and increased permeability of rock within the well perforated interval due to provided effective parameters of impact and pulsed action at simplified design of the used equipment and reduced power requirement for the ground pumping equipment.

2 cl, 3 dwg