Active Member
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[China]
Address: B2-0645 ROOM, CENTURY-TEA-TRADE-CENTER, NO.10 MALIANDAO ROAD, XUANWU DISTRICT, BEIJING, CHINA
Contact name:Jade
FLRT Bit |
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311.2mm FSG124, Steel Tooth Tricone Bit , Rotary Drilling Bit , Rubber Sealed Bearing , TRC Bit
RECOMMENDED DRILLING PARAMETERS FOR APPLICATION
| Types & IADC Code | 116 117 | 126 127 | 136 137 | 216 217 | 246 247 | 326 327 | |
| WOB | KN/mm(Bit Dia.) | 0.48~1.0 | 0.48~1.0 | 0.48~1.0 | 0.4~1.0 | 0.4~1.0 | 0.55~0.85 |
| Lb/in. (Bit Dia.) | 2742~5714 | 2742~5714 | 2742~5714 | 2285~5714 | 2285~5714 | 3140~4860 | |
| Rotation Speed (Rpm) | 160~80 | 150~70 | 130~60 | 100~60 | 80~50 | 60~45 | |
Roller cone bits
- Employs cones rotates about their own axis
- Used in mining and civil engineering
- First used in 1920
- Cones can be milled teeth cut from the body or tungsten
carbide buttons interested into the cones
- There are three types:
• Two cone bit, milled tooth used for soft formation
• Three cone bit most widely used, milled or insert
• Four cone bit, milled tooth used for drilling large
diameter 26 in (660.4 mm)
