Symmetrical parabola crown profile,asymmetrical blades ,cutters
are distributed as curve,more assistant cutters inserted and the
gauge is designed spiral. Flow roomage is optimal design so that
mud and rock granule can be clear easily in drilling.
2.High wear resistance cutters.High performance PDC cutters
optimal designed highly increase efficiency of drilling.
3.Oppose-circumnutation design.The load on bit is balanced,and
journal libration is decreased as well as good performance in
directional drilling.
4.This series of bits are suitable for soft to medium-hard
formation in directional well drilling.
