WELL UNDERGROUND REPAIR UNIT WITH CONTINUOUS FLEXIBLE PIPE STRING Russian patent published in 2014 - IPC E21B19/22 

FIELD: oil-and-gas industry.

SUBSTANCE: well underground repair unit with application of continuous pipe string comprises carrier. Carrier frame supports control cabin, transmission, drum with central shaft for winding flexible pipe arranged at the supports, ejector to force displacement of flexible pipe, drives to set ejector an control cabin to working position and mouth sealer. Drum shaft supports allow varying the height of drum shaft relative to carrier frame. Drum shaft variation occurs as pipe is wound/unwound discretely after winding/unwinding of immediate pipe layer. Drum is articulated with support height adjuster. Drum supports are telescopic and consist of at least two stationary and fixed parts.

EFFECT: longer life.

4 dwg