Abstract: A setting tool (10) for use in a downhole wellbore is described as having a hydraulic fluid pumping mechanism (78) for providing pressurized hydraulic fluid. A piston mechanism (116) is moveable by said pressurized hydraulic fluid acting upon a portion of the piston mechanism (116). A resetting mechanism (84) is provided which when operated releases the pressurized hydraulic fluid from acting upon said portion of the piston (116) and which results in the resetting of the setting tool (10). In addition, a method for resetting a setting tool (10) is described including the steps of: (i) running the setting tool (10) downhole; (ii) actuating the setting tool (10) and thereby deploying an apparatus (203) downhole; (iii) retrieving the setting tool (10) to surface; and (iv) bleeding off pressure to reset the setting tool (10).

Abstract: A setting tool (10) for use in a downhole wellbore is described as having a hydraulic fluid pumping mechanism (78) for providing pressurised hydraulic fluid. A piston mechanism (116) is moveable by said pressurised hydraulic fluid acting upon a portion of the piston mechanism (116). A resetting mechanism (84) is provided which when operated releases the pressurised hydraulic fluid from acting upon said portion of the piston (116) and which results in the resetting of the setting tool (10). In addition, a method for resetting a setting tool (10) is described including the steps of: (i) running the setting tool (10) downhole; (ii) actuating the setting tool (10) and thereby deploying an apparatus (203) downhole; (iii) retrieving the setting tool (10) to surface; and (iv) bleeding off pressure to reset the setting tool (10).