PRESSURE IMPULSES GENERATOR Russian patent published in 2004 - IPC

FIELD: oil extracting industry. SUBSTANCE: device has body with element for initiating gas, reservoir with chemical reagent and combustion chamber. Insert is placed inside the body. Safety valve and operation valve are placed in combustion chamber. Insert is made in form of a barrel with central axial aperture for connecting hollow of combustion chamber to reservoir with chemical reagent. Central axial aperture on the side of combustion chamber is covered by operation valve, and on the side of reservoir with chemical reagent is covered by a plug. In the insert there are radial high-pressure channels made in form of nozzles and with displacement chamber. Radial high-pressure channels are connected to central axial aperture and to axial low-pressure channels, which connect radial high-pressure channels to reservoir with chemical reagent. On the side of reservoir with chemical reagent into axial low-pressure channels pipes with a stop are placed, and on the side of radial high-pressure channels plugs are mounted in form of fusible plugs. Operation valve may be made in form for multiple use or in form of fusible plug. EFFECT: simplified generator construction, possible control of gas and chemical reagent outflow process on basis of time interval and pressure, complex physical and chemical influence on the well at productive layer area, and increased rock conductivity which increases wells' productiveness. 3 cl, 3 dwg