HYDRAULIC PULSE GENERATOR Russian patent published in 2000 - IPC

FIELD: oil and gas production. SUBSTANCE: invention refers to equipment meant for hydraulic pulse action on face zone of well. Hydraulic pulse generator has body and barrel with slits and holes. Barrel is supported in upper and lower bearing. Lower part of body has radial ducts and holes. Elastic member is installed above upper bearing. Extending members are located in side surface of body. They are hydraulically coupled to internal space of body by means of slits and longitudinal ducts in body. Body also has tangential holes. With feed of fluid barrel starts rotation, extending members center generator in casing string and exert vibration effect on it and on face zone of stratum. EFFECT: improved technical and technological characteristics of operation of generator. 2 cl, 3 dwg