EQUIPMENT TO TREAT FACE ZONE OF POOL AND HYDRODYNAMIC GENERATOR OF FLOW RATE VARIATIONS FOR IT Russian patent published in 2001 - IPC

FIELD: oil production. SUBSTANCE: invention can be used to develop and increase productivity of oil-and gas-carrying horizons in process of repair and exploitation of wells. Given equipment includes jet-type pump with body incorporating mixing chamber, nozzle chamber with flow conduit through packer and filter-coupling. Valve-relay and flow or pressure regulator are installed inside filter-coupling. Hydrodynamic radiator is placed under packer on pipe string at level of perforation interval. Valve-relay is fitted with time relay and is positioned between pressure regulator and radiator. Overflow conduit is made in parallel to valve-relay. Hydrodynamic radiator comes in the form of self-excited low-frequency generator of flow rate variations. Flow chamber of hydrodynamic radiator is equipped with additional nozzle located in opposition to main nozzle. Inlet space of main and additional nozzles is common. Efficiency of operation of well equipment rises thanks to achievement of maximum energy parameters of vibration action, to enlargement of period of vibration action under conditions of sufficient pool depression with minimal flow rate of working fluid which enables efficiency of treatment to be raised. Apart from it hydrodynamic generator in given implementation does not have any moving mechanical units, shows increased wear resistance and efficient operation while corrosive and highly gas-. saturated working fluids are utilized. EFFECT: enhanced operational efficiency of well equipment. 18 cl, 6 dwg