geothermal well drilling 4" drill bit





Application Of The PDC Bits
1,Suit for drilling medium to medium-hard formations.
2,Evolute asymmetrical blade cutter design and balanced bit load so that bit whirl is prevented .
3,Composite gage protection and low torque design improve rate of penetration .
4,CFD hydraulic balance design results in better bit cleaning and cutting removal .
5,Combined utilization of high performance PDC compacts significantly prolongs bit life
Bit Type | Main bit size(mm) | Rock Coefficient | |
PDC core drill bit | Single pipe | 75/54.5 94/74 113/89 113/109 153/129 | 1-18 |
Two pipes | 75/54.5 94/68 | 1-18 | |
PDC center drill bit | Concave 3 wing bit | 60. 75. 94. 113. 133. | |
Arc pillar | 60. 75. 94. 113. 133. | 4-18 | |
Many wing scraper | 60. 75. 94. 113. 133. 153. 173. 190. 215. | 1-6 | |
PDC Indexable drill bit | 153/94 153/113 190/153 190/113 | 1-18 | |
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