DEVICE FOR DELIVERING EQUIPMENT INTO HORIZONTAL WELL Russian patent published in 2004 - IPC

FIELD: well drilling technology.

SUBSTANCE: device has cylindrical body, jointly mounted splitting supports, electric engines with decreasing reducers and an engine made in form of wheels with radius equal to radius of explored well. Wheels mounted in body are connected to leading shaft by worm gearing for each wheel. Splitting supports are jointly connected by levers to driving nuts mounted in driving screws on right and left thread. Each splitting support is provided with rollers and moveable bushings connected with levers through grooves made in body of splitting support with possible swinging of the latter relatively to longitudinal axis of levers.

EFFECT: higher traction force and better driving of sleeves joints of casing string.

2 cl, 3 dwg