HYDROMECHANICAL PERFORATOR Russian patent published in 2004 - IPC

FIELD: oil and gas industry, secondary opening-out of formations to create artificial network of drain conduits in downhole zone of formation. SUBSTANCE: hydromechanical perforator includes flexible probe, hollow rod, nozzle, deflecting tool. Flexible probe is placed among toothed cylindrical bushings with annular groove. Bushings are positioned in guiding tube with deflecting tool. One end of probe carries hard-alloy crown bit with nozzle, its other end is connected to hollow rod which end carries working turbine. Turbine is set inside basket. Basket has location seats to accommodate journal bearings. Basket is mounted for movement inside tubing. EFFECT: provision for giving flexible probe properties of rigid probe to increase length of rectilinear conduit. 2 cl, 3 dwg