NOVELTY - The apparatus (10) has a first actuator (20a) comprising a non-rigid tension element configured to engage an object i.e. well equipment (14), at a first contact point. A second actuator (20b) comprises another non-rigid tension element configured to engage the object at a second contact point. A controller (60) is connected with the actuators, and estimates length of one of the non-rigid tension elements. The controller is programmed to control the actuators to orient the object relative to an internal reference frame and move the object relative to an external reference frame.    USE - Energy-efficient apparatus for manipulating an object i.e. well equipment such as tubular, pipe, drill pipe, packer, bridge plug, drill collar, casing, liner, screen, drilling motor, MWD sub, bottom hole assembly (BHA), completion tool, workover tool and electric submersible pump (all claimed) in oilfield, geothermal and mining sites.    ADVANTAGE - The apparatus comprises a pretension part i.e. drag-force part, to enable static equilibrium, and an additional dynamic part to enable the movement along the desired trajectory. The apparatus ensures that tension and compression forces of multiple independent working joints/systems in a parallel kinematic system, work together to self increase and optimize the strength of the structure. The parallel controlled actuators e.g. wire systems under tension or hydraulic piston systems under compression, are parts of the mechanical structure, so that the demand of support from a static frame which is normally not fully utilized in terms of strength capabilities in each degree of freedom, is reduced. The controller can be programmed to coordinate movement of the equipment using the equipment handling and drilling system to find the predefined positions and to calculate the optimum amount of linear forces to be applied from the actuators to guarantee the strength to load balanced structure in parallel.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a method for manipulating a well equipment.    DESCRIPTION OF DRAWING(S) - The drawing shows a perspective view of an energy-efficient apparatus for manipulating an object i.e. well equipment.    Energy-efficient object manipulating apparatus (10)    Offshore rigs (12)    Well equipment (14)    Actuators (20a, 20b)    Controller (60)