unit 402 also can be a linear motor a motor with a power screw or other similar arrangements the center piston or power screw 411 is connected to a piston 404 which seals off using seals 405 a series of ports 412 at run in position when the motor is actuated the center piston or power screw 411 moves and allow the ports 412 to be connected to chamber 413 hydrostatic pressure enters the chamber 413 working against atmosphere chamber 414 pushing down the setting piston 413 and moving an actuating rod 406 a tool 407 thus is set fig1 illustrates a deviated wellbore 500 and a slickline 502 supporting a bottom hole assembly that can include logging tools or other tools 504 when the assembly 504 hits the deviation 506 forward progress stops and the cable goes slack as a signal on the surface that there is a problem downhole when this happens different steps have been taken to reduce friction such as adding external rollers or other bearings or adding viscosity reducers into the well these systems have had limited success especially when the deviation is severe limiting the usefulness of the weight of the bottom hole assembly to further advance downhole fig1 schematically illustrates the slickline 502 and the bottom hole assembly 504 but this.