Matrix Body PDC Which is a matrix body PDC bit using arc-type double rows design with eight spiral blades and long parabolic profile with high wear design,effectivey improve the pdc bit impact resistant and abrasive resistant,thereby improving the rate of speed.Balanced by hydraulics esign,with each blade cutting the amount of displacement is proportional to te volume of cuttings transport to match the drill cuttings transport capacity optimization.Submarine shaped likehigh brasin protection and debris flow path design enables streamlned channel formation,which prevents balling trend caused by the swirl and eddy.Dynamic flow simulating technology is uesd for hydraulic design to ensure optimum bottom hole flow patters and anti-balling. Suitable for high compressive strength,high abrasive hard and tight formations,such as Limestone,Calcareous Shale,Siliceous Sandstone,Siltstone.