Integral straight blade stabilizer working surface are provided with carbide insert compound or overlay welding, etc. The body is made from high strength alloy steel and heat treatment.
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Bit OD
(in
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OD
(mm)
|
End OD.
(mm
|
ID.
(mm)
|
Length
(mm)
|
Length (mm
|
Connection
|
||||||
|
Short type
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Long type
|
Drill string type
|
Near bit type
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|||||||||
|
Near bit type
|
Drill string type
|
Near bit type
|
Drill string type
|
Top
|
Down
|
Top
|
Down
|
|||||
|
6
|
152.4
|
121
|
51
|
300-500
|
800-900
|
1000-1100
|
1200-1400
|
1400-1600
|
NC38
|
NC38
|
NC38
|
3 1/2
REG
|
|
6 1/4
|
158.7
|
|||||||||||
|
6 1/2
|
165.1
|
|||||||||||
|
7 1/2
|
190.5
|
159
165
178
|
57
71
|
1000
|
1600
|
1800
|
NC46
|
NC46
|
NC46
|
4 1/2
REG
|
||
|
7 7/8
|
200.0
|
|||||||||||
|
8 3/8
|
212.7
|
400
500
600
|
1000-1200
|
1600-1800
|
1800-2000
|
NC46
NC50
|
4 1/2
REG
|
|||||
|
8 1/2
|
215.9
|
|||||||||||
|
8 3/4
|
222.2
|
|||||||||||
|
9 1/2
|
241.3
|
178
197
|
71
|
400-600
|
800-1000
|
1000-1200
|
1600-1800
|
NC50
|
NC50
|
NC50
|
6 5/8 REG
|
|
|
9 5/8
|
244.5
|
|||||||||||
|
9 7/8
|
250.8
|
|||||||||||
|
12 1/4
|
311.2
|
203
229
|
76
|
400-600
|
1000-1200
|
1200
1500
|
1800
2000
|
NC56
6 5/8 REG
|
6 5/8 REG
|
|||
|
17 1/2
|
444.5
|
400-600
|
1200-1300
|
1200-1300
|
2000-2200
|
2000-2200
|
NC61
75/8 REG
|
|||||