Hejian Smart Petroleum Machinery Co., Ltd.
Main products:Tricone Bit,PDC Bit
Contact Us
  • Contact Person : Ms. Feng Emely
  • Company Name : Hejian Smart Petroleum Machinery Co., Ltd.
  • Tel : 86-317-3180823
  • Fax : 86-317-3180823
  • Address : Hebei,Hejian,Junziguan,Shijing town, Hejian
  • Country/Region : China
  • Zip : 062450

8 1/2'' PDC bit

8 1/2'' PDC bit
Product Detailed
IADC Code M223 Bit Specifications Bit size 8 1/2 in Blade count 4 pcs

Main cutter size     Φ19mm

Number of nozzles   4 pcs

Gage length   85mm

Shank    4 1/2 API Reg.

Make up torque (KN.m)   16.6-23.7

Junk slot area       11087in2

Recommended drilling parameters

Rotary speed(rpm     50-260

WOB(KN)                     30-120

Flow rate(L/s)                25-35


Structure features and applications of the bit:

1.      Optimally designed bit profile for drilling soft to medium formations.

2.      Cutting structure is force balanced and bit blade is asymmetrically designed so that the load on bit is balanced that resulting better stability of the bit.

3.      Main cutters are 19.05mm high performance PDC cutters to insure service life of the bit while improving ROP.

4.      Cutter exposure is optimized to insure the bit can achieve higher ROP in soft to medium formations.

5.      Deep junk slot design to enhance cuttings removal ability of the bit in order to obtain high ROP.

6.      Hydraulic system of the bit is optimized using dynamic flow pattern simulation technology to enhance cleaning and cooling effects of the bit to effectively prevent bit from balling.

7.      The bit is designed with longer gage for better angle holding ability and better stability.

8 1/2'' PDC bit

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