Extended reach power track tool used on coiled tubing

A traction tool operable with fluid flow from coiled tubing for use in a wellbore, the traction tool comprising:

• a motor having a stator and a drive shaft, the drive shaft rotatably disposed in the stator, the drive shaft extending along a longitudinal axis and having a shaft bore therethrough for passage of the fluid flow, the motor being configured to impart a rotation to the drive shaft about the longitudinal axis in response to pressure of the fluid flow in a space between the stator and drive shaft;
• a driver piston disposed on the drive shaft adjacent to the motor and being rotatable with the rotation of the drive shaft, the driver piston being movable with a first movement in a longitudinal direction in response to hydraulic pressure of the fluid flow communicated from the motor;
• a driver disposed on the drive shaft adjacent to the driver piston and being rotatable with the rotation of the drive shaft, the driver being movable in response to the first movement of the driver piston, the driver being movable between a retracted condition and an extended condition relative to the longitudinal axis, the driver in the extended condition being configured to engage inside the wellbore, a portion of the driver being arranged at an angle transverse to the longitudinal axis;
• and
• a ram disposed adjacent to the driver and being connected by a rotatable connection to the drive shaft, the ram having a ram arm and a ram piston chamber, the ram arm being extendable along the longitudinal axis in response to hydraulic pressure in the ram piston chamber.

A method for use in a wellbore, the method comprising:

• deploying a traction tool on coiled tubing in the wellbore;
• operating a motor on the traction tool using fluid flow from the coiled tubing;
• transferring rotation of the motor to a rotating driver disposed on the traction tool;
• selectively engaging transverse portions on the rotating driver against the wellbore by operating at least one piston on the traction tool using the fluid flow from the coiled tubing and moving the rotating driver from a retracted condition to an extended condition on the traction tool in response to the operation of the at least one piston;
• advancing the traction tool in the wellbore by riding the transverse portions on the rotating drive along the wellbore;
• and
• engaging an anchor on the traction tool inside the wellbore in response to a second level of hydraulic pressure greater than a first level used for activating the rotating driver.