Use high-quailty steel to make the base material of PDC bit, the surface of the blade weld high-performance wear-resistant materials,the use of computer software for the overall design of three-dimensional PDC BIT,double asymmertric teeth straight blade, medium parabolic crown, long Gage shape structure.Cutting structure using force balance design,unique PDC cutter layout and positioning of the PDC bit to keep a sharp cutting edge in drilling,effectively improve the offensive PDC BIT and drilling speed.The application of fluid dynamics analysis and numerical simulation of hydraulic flow field analysis technology to design,help to improve chip speed drill and anti-balling capacity.                         Suitable for high compressive strength,with abrasive medium hard to hard formations,such as shale,limestone,anhydrite,sandstone and so on.