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        • Product: 8-1/2" GS1904T
        • Register Date: 2015-02-12
        • Views : 429

          Product Parameter  
          Bit Type 8-1/2” GS1904T
          IADC Code S223
          Number of Blade 4
          Primary Cutter Size Φ19 mm
          Nozzle Qty.&Type 6NZ
          Gauge Length 100 mm
          Connection 4-1/2" API REG
          Make up Torque 24.1~26.5 KN·m
          Operating Parameters  
          Rotary Speed 60~260 rpm
          Weight on Bit 20~100 KN
          Max. WOB 130 KN
          Flow Rate 22~35 lps
          Features Small spiral four blades design, the rational allocation of different elevation big size cutters, the PDC bit can obtain a higher rate of penetration in drilling soft to medium soft formation. High quality arc PDC cutter gauge, reduce the abrasion of rock on the bit’s body, increase wear resistance and stability of the drill gauge. Brazing high wear resistance PDC cutters at specific angle, when resistance during trip-out and back reaming in easy shrinking interval, it can effectively remove the obstacles, protect the bit body from harm. The surface of the blade weld high-performance wear-resistant materials, improve bit’s wear resistance and erosion resistance. Longer gauge design is helpful to reduce the lateral shift, improve the stability of the bit. Thereby improving the quality of the borehole. And longer gauge also increase the strength of the bit, improve the resistance to pressure.
          Application Soft formation with sticky layers and low compressive strength. Such as Clay, Marl, Lignite, Shale, Sandstone and so on.