PACKERS, FRACPORTS AND FRACJETS FOR USE IN THE PLACEMENT OF FLUIDS INTO OR OUT OF THE WELL, TRAVELING SUBS FOR OPENING MULTIPLE PORES, BALL SEATS VALVES, WELLBORE CASING, TUBING, METAL OR CERAMIC BALLS FOR USE IN THE FLOW OF FLUIDS, CIRCULATING VALVES, CENTRALIZERS, OPEN HOLE ANCHORS, ALL USED IN OIL AND GAS WELL COMPLETIONS