METHOD FOR WAVE ACTION ON DEPOSIT AND DEVICE THEREFOR Russian patent published in 2016 - IPC E21B43/25 E21B28/00 

FIELD: mining.

SUBSTANCE: group of inventions relates to mining and can be used for wave action on reservoir to increase influx of minerals, such as oil, to well. Method for wave action on reservoir comprises a load impact on walls of well through liquid which is fed in a pre-sealed portion of borehole and creating elastic vibrations swaying load along borehole axis by force applied thereto. Before sealing section of well, method includes changing mechanical properties of deposit at point of application of loads thereto, for which well walls formed solid crack in planes passing through axis of well, and used for increasing amplitude of created by elastic vibrations. Solid cracks are formed with possibility of harmonic oscillations of their surfaces. Device for wave action on deposit includes hydraulic cylinder and weight. Hydraulic cylinder is made with possibility of changing its diameter. Load is attached to plunger of hydraulic cylinder, made in form of bar with possibility of its swinging with frequency of free vibrations of deposit section in contact with side surface of hydraulic cylinder, for which device is equipped with a solenoid, which is designed to interact with rod and is equipped with system of its control.

EFFECT: technical result is change of mechanical properties of deposit at point of exciting elastic vibrations, bouncing synchronisation with reaction of rock mass on force action on it.

9 cl, 3 dwg