Multiple-set downhole tool and method

摘要: A downhole tool is provided suitable for multiple setting and unsetting operations in a well bore during single trip. The suspended the wellbore from tubing string, activated by dropping metal ball which plugs passageway through such that pressure may thereafter be increased to activate tool. sleeve axially movable within control sub stop position release position, has cylindrical-shaped interior surface with diameter only slightly greater than ball. Collet fingers carried on are radially an inward outward or as function of axial sleeve. Fluid flow string thus effectively blocked when because close tolerance between ball, while freely released moved position.