MULTI-CHANNEL DEMOUNTABLE LONG-LENGTH FLEXIBLE COLUMN Russian patent published in 2018 - IPC E21B17/20 E21B19/22 E21B17/02 F16L11/22 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the field of operation of gas-oil wells, namely to flexible pipes of oil grade (coiled tubing). Multi-channel long-length flexible column consists of at least two flexible long-range service channels selected from the group: hydraulic lines, power electrical cables, fiber-optic and electrically conductive information lines, and fused together with an elastic casing into a long-length section. Column consists of at least two long sections in elastic casings with a selected set of service channels. At least one mating surface parallel to the axis of the column is formed on the elastic casing of each long-length section to connect the sections to each other. In this case, one of the mating surfaces has long-length locking grooves, and the other – reciprocal matched long-length locking tabs, providing connection of a long-length section into a column when running in and disconnection when lifting a multi-channel, long-length flexible column from a well.

EFFECT: technical result is the preparation of a multi-channel long-length flexible column with the necessary set of service channels in accordance with the applied well technology or artificial lifting method.

5 cl, 29 dwg