Bit feature |
Arc type double seven toothed blade design, rational allocation of different positions of high quality medium size PDC composite sheet, to maximize the local cutting tooth equivalent density, effectively improve the drill attack and abrasion resistance. The high wear resistance of polycrystalline diamond gage, reduce the rock of the bit wear, greatly increased the gage wear resistance and stability. Brazing specific angle of high wear-resisting PDC, drilling blocked, and in reducing diameter wells pour delimit eye, effectively remove obstacles, and to protect the bit body。 |