DEVICE FOR IN-WELL BED PROCESSING Russian patent published in 2013 - IPC E21B33/12 

FIELD: oil-and-gas industry.

SUBSTANCE: proposed device comprise packer. The latter comprises the case with shaped slot at outer surface, cartridge with pin and slips and elastic cup. Said pin is fitted in shaped slot to displace therein. Besides, proposed device comprise disconnector. Said disconnector consists of the barrel with top and bottom thread and slide valve. Said slide valve is arranged inside said barrel and connected therewith by cutoff elements. Besides, it has central axial bore, taper bore to receive lock ring, ball valve seat to be thrown down inside the device before processing the second bed, and lower ring. Bottom ring is screwed on disconnector lower thread and is composed of a cover. Cover bottom has inner thread for connection with through packer case and rod rigidly secured thereat at the center. Also, its has axial holes arranged in circle with their capacity exceeding that of slide valve central bore. Said rod is directed toward slide valve and can tightly interact with its central axial bore after ball fit at said seat and axial displacement of slide vale relative to disconnector barrel. Lock ring interacts with annular groove at disconnector barrel lower part. Shaped sleeve at parker case outer surface is composed of transverse and lengthwise grooves arranged perpendicular to each other and interconnected at lengthwise groove bottom.

EFFECT: higher reliability, longer life, expanded operating performances.

4 dwg