HYDRAULIC BALL-TYPE VIBRATOR Russian patent published in 2000 - IPC

FIELD: oil production industry. SUBSTANCE: vibrator can be used for treatment of bottom-hole zone of bed. Hydraulic ball-type vibrator has body with tapered seat. Installed inside body is upper stroke limiter with holes, head-piece, and internal supporting protrusion. Also provided is lower stroke limiter with supporting protrusion, holes, and sealing units. Cylinder is installed between stroke limiters. Internal surface of cylinder narrows downwards. Lower part of cylinder internal surface is made widened downwards. Located inside cylinder between upper limiter and lower limiter is ball. When liquid is being pumped through body of vibrator, ball periodically closes holes in lower stroke limiter thus causing pressure changes. Application of aforesaid embodiment of hydraulic ball-type vibrator allows for widening its functional potentialities, reducing labour intensity to manufacture it together with enhancing reliability of its operation. EFFECT: higher efficiency. 1 dwg