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Specifications
Integral straight rib stabilizers:1).AISI 4145H alloy steel
2).API standards
Integral 3-Straight rib stabilizer, Integral 4-Straight rib stabilizer, working surface are provided with carbide insert compound or overlay welding, etc. The body is made from high strength and heat treated , the centralizing blades are designed at customer’s request.
Thechnical specifications and parameters
Bit | D2 | d | L2 | Length(mm) | Thread code on two ends | |||||||
O.D (in) | Working O.D. | Short Type | Long Type | Drill string type | Near bit type | |||||||
(in) | ||||||||||||
Near bit type | Drill string | Near bit type | Drill | end | Down | Top | Down | |||||
type | string type | |||||||||||
6 | 152.4 | 121 | 51 | 400~500 | 800~900 | 1000~1100 | 1200~1400 | 1400~1600 | NC38 | NC38 | NC38 | 3 1/2REG |
6 1/4 | 158.7 | |||||||||||
165.1 | ||||||||||||
6 1/2 | ||||||||||||
7 1/2 | 190.5 | 1000 | 1600 | 1800 | NC46 | NC46 | NC46 | 4 1/2REG | ||||
7 7/8 | 200 | 159 | 57 | |||||||||
8 3/8 | 12.7 | 165 | 400 | 1000~1200 | 1600~1800 | 1800~2000 | ||||||
8 1/2 | 15.9 | 178 | 500 | NC46 | 4 1/2REG | |||||||
8 3/4 | 22.2 | 600 | NC50 | |||||||||
9 1/2 | 241.3 | 400~600 | 800~1000 | 1000~1200 | 1600~1800 | |||||||
9 5/8 | 244.5 | 178 | 71 | NC50 | NC50 | NC50 | 6 5/8REG | |||||
9 7/8 | 250.8 | 197 | ||||||||||
12 1/4 | 311.2 | 500~600 | 1000 | 1200 | 1800 | NC56 | ||||||
203 | 76 | 1200 | 1500 | 2000 | 6 5/8REG | 6 5/8 REG | ||||||
17 1/2 | 444.5 | 229 | 500~600 | 1200~1300 | 1200~1300 | 2000~2200 | 2000~2200 | NC61 | ||||
7 5/8REG | ||||||||||||
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