GRABBING TOOL FOR CABLE EXTRACTION Russian patent published in 2012 - IPC E21B31/00 

FIELD: oil and gas industry.

SUBSTANCE: device includes housing, grabbing element in the form of helical spiral located on solid bar with variable cross section, one end of which is rigidly fixed in the housing. Upper part of the element on which the spiral is located is made in the form of hexagonal bar continued to conical part with thread on surface for conical thread in hollow housing, which is smoothly continued to cylindrical part used as a limit stop, which is then smoothly continued to lead-in conical part being a composite part of grabbing element with pointed top at the bottom, with helical spiral provided with an edge in the form of solid teeth, which is arranged throughout the length of lead-in conical part. Grabbing lead-in conical part is arranged in cavity of housing with a gap relative to the housing, which forms a container, reservoir to arrange the extracted pressed mass of logging cable in it with output of lower part of lead-in element from housing. Lower internal part of housing is provided with lead-in cone the larger base of which is directed downwards. Upper part of housing has through flushing holes.

EFFECT: increasing operating efficiency of the device; improving repairability and simplifying the design.

9 dwg