DEVICE FOR WELL PERFORATION Russian patent published in 1995 - IPC

Abstract RU 2043486 C1

FIELD: gas and oil producing industry. SUBSTANCE: device for well perforation includes body, piston and punch. Punch is rigidly connected with piston and has water course. Piston cross-section is in form of rectangle with rounded edges. Punch is made with recess on side surface that ensures communication between drill string-borehole annulus and drill string hollow in working position of device. Punch water course is made along its axis. EFFECT: improved performance characteristics due to reduced abrasion of punch and improved operating conditions of jet. 2 dwg

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RU 2 043 486 C1

Authors

Solovkin Oleg Evgen'Evich

Dates

1995-09-10—Published

1992-04-16—Filed