Active Member
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[China]
Address: Free trade area scientific & technological innovation base 3622, hangyi road, langfang airport economic zone, daxing airport district, China (hebei) pilot free trade zone.
Contact name:Ji
Langfang Ouhang Technology Co., Ltd. |
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Product Features
RRI (Roller Bearing-Rubber Sealing-Inserted Tooth) bits is a kind
of ideal and economic tool in high speed well drilling.
Product Features:
-Sealed roller bearing structure is placing the cylinder roller
into groove of cone which increases the bearing neck size to load
larger WOB and adapt high ROP.
-Surface of thrust bearing is hardening treated and wear reducing
treated to improve the loading ability and anti-seizure ability of
bearing.
-High strength and high flexible hard alloy teeth are applied to
improve the anti-impact performance, reduce tooth breaking rate.
-Optimized milled teeth quantity and teeth arrangement structure
give full play to the cutting ability and cutting speed of drill
bits.
| Conventional Inserted Teeth Tri-Cone Bits | |||||||||||||
| IADC Code Available | Size Available | Protodrakonov Scale of Hardness | Recommend WOB | Recommend RPM | |||||||||
| 3-7/8" | 4-3/8" | 4-5/8" | 5-1/4" | 6" | 7-1/2" | 8-1/2" | 8-3/4" | 9-1/2" | 12-1/2" | ||||
| 98.4mm | 111.1mm | 117.5mm | 133.4mm | 152.4mm | 190.5mm | 215.9mm | 222.2mm | 241.3mm | 311.1mm | KN/mm(Bit OD) | |||
| 437 | √ | √ | f=5~7 | 0.35~0.9 | 60~150 | ||||||||
| 517 | √ | √ | √ | √ | f=6~8 | 0.4~0.95 | 60~150 | ||||||
| 537 | √ | √ | f=8~10 | 0.75~0.85 | 60~150 | ||||||||
| 637 | f=10~12 | 0.75~1.20 | 40~70 | ||||||||||
| 2-3/8REG | 2-7/8REG | 3-1/2REG | 4-1/2REG | 6-5/8REG | "√" means regularly available products; other types or sizes shall be custom made accordingly. | ||||||||
| Thread Connection Available | |||||||||||||
