DEVICE FOR SELECTIVE ISOLATION OF BED

摘要

FIELD: oil producing and mining industries; applicable in completion of wells. SUBSTANCE: device has body and packing units made in the form of metal corrugated pipe which corrugation bottoms has reinforced flexible cover plates. Internal hollow between corrugated pipe and body is filled with viscoplastic fluid. After coming in contact with mud entering the hollow through check valve installed in body, the fluid solidifies. Welded above and under packer annular space to device body are equipassable medium separators. EFFECT: higher reliability in isolation of beds irrespective of temperature conditions due to tight pressing of device walls to well walls. 2 cl, 1 dwg