DEVICE FOR SWITCHING OF BEDS ONE FROM ANOTHER IN A WELL(VARIANTS) Russian patent published in 2004 - IPC

Abstract RU 2236557 C1

FIELD: oil extractive industry.

SUBSTANCE: device has two packing elements of analogical construction. Each of them has body, elastic sleeve, expanding body and supporting branch pipe. Packing elements are connected to each other by intermediate pipe or pipes. In driving channel of lower packing element a check valve is placed. According to second variant, device is provided with a sub connected to supporting branch pipe of upper packing element, in which a special valve is mounted. According to third variant, device is provided with spring-loaded valve mounted in supporting branch pipe of upper packing element.

EFFECT: simplified construction and deconstruction of equipment, high reliability of separation, universal use.

3 cl, 4 dwg

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RU 2 236 557 C1

Authors

Salakhov M.M.

Nurislamov N.B.

Mel'Nikov D.V.

Dates

2004-09-20—Published

2003-05-29—Filed