DEVICE FOR TRANSPORTING TOOLS TO HORIZONTAL WELL Russian patent published in 2014 - IPC E21B23/14 

FIELD: oil and gas industry.

SUBSTANCE: device contains a hollow cylindrical body, a unit of its movement equipped with an electric motor, a ball screw assembly and a traction element and a fixing unit equipped with fixing platforms and pivot levers. At that the body is made as in-series connected links with potential rigid connection in-between in direction of links axial movement and mutual rotation in two orthogonal planes and in direction of mutual twisting. In each link cavity there is a link movement unit and link fixing unit. At that movement unit of each link is made as two electric motors placed at two opposite link ends, their output shafts are connected kinematically to the ball screw assembly which nut is connected rigidly to the traction element made as a rod and its other end is connected rigidly to fixing points of the fixing unit pivot levers.

EFFECT: improving efficiency of the device operation, reducing loads in the well with significant geometry faults, increasing reliability and fail-safe operation.

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