Drill collar
Main technical parameters:
|
specification |
NC23-31～NC70-100 |
|
All series of API specifications |
|
|
executive standard |
API Spec 7-1 API Spec 7-2 |
|
SIZE |
OD |
ID |
Lmm |
Shoulder chamfering diameter |
Bending strength ratio of the reference |
||
|
mm |
In |
mm |
in |
|
|||
|
NC31-41(2-7/8IF) |
104.8 |
2004/1/8 |
50.8 |
2 |
9150 |
100.4 |
2.43:1 |
|
NC35-47 |
120.7 |
2004/3/4 |
50.8 |
2 |
9150 |
114.7 |
2.58:1 |
|
NC38-50(3-1/2IF) |
127 |
5 |
57.2 |
2002/1/4 |
9150 |
121 |
2.38:1 |
|
NC44-60 |
152.4 |
6 |
57.2 |
2002/1/4 |
9150/9450 |
144.5 |
2.49:1 |
|
NC44-60 |
152.4 |
6 |
71.4 |
2-13/16 |
9150/9450 |
144.5 |
2.84:1 |
|
NC44-62 |
158.8 |
2006/1/4 |
57.2 |
2002/1/4 |
9150/9450 |
149.2 |
2.91:1 |
|
NC46-62(4IF) |
158.8 |
2006/1/4 |
71.4 |
2-13/16 |
9150/9450 |
150 |
2.63:1 |
|
NC46-65(4IF) |
165.1 |
2006/1/2 |
57.2 |
2002/1/4 |
9150/9450 |
154.8 |
2.76:1 |
|
NC46-65(4IF) |
165.1 |
2006/1/2 |
71.4 |
2-13/16 |
9150/9450 |
154.8 |
3.05:1 |
|
NC46-67(4IF) |
171.4 |
2006/3/4 |
57.2 |
2002/1/4 |
9150/9450 |
159.5 |
3.18:1 |
|
NC50-67(4-1/2IF) |
171.4 |
2006/3/4 |
71.4 |
2-13/16 |
9150/9450 |
159.5 |
2.37:1 |
|
NC50-70(4-1/2IF) |
177.8 |
7 |
57.2 |
2002/1/4 |
9150/9450 |
164.7 |
2.54:1 |
|
NC50-70(4-1/2IF) |
177.8 |
7 |
71.4 |
2-13/16 |
9150/9450 |
164.7 |
2.73:1 |
|
NC50-72(4-1/2IF) |
184.2 |
2007/1/4 |
71.4 |
2-13/16 |
9150/9450 |
169.5 |
3.12:1 |
|
NC56-77 |
196.8 |
2007/3/4 |
71.4 |
2-13/16 |
9150/9450 |
185.3 |
2.70:1 |
|
NC56-80 |
203.2 |
8 |
71.4 |
2-13/16 |
9150/9450 |
190.1 |
3.02:1 |
|
6-5/8REG |
209.6 |
2008/1/4 |
71.4 |
2-13/16 |
9150/9450 |
195.7 |
2.93:1 |
|
NC61-90 |
228.6 |
9 |
71.4 |
2-13/16 |
9150/9450 |
212.7 |
3.17:1 |
|
7-5/8REG |
241.3 |
2009/1/2 |
76.2 |
3 |
9150/9450 |
223.8 |
2.81:1 |
|
NC70-97 |
247.6 |
2009/3/4 |
76.2 |
3 |
9150/9450 |
232.6 |
2.57:1 |
|
NC70-100 |
254 |
10 |
76.2 |
3 |
9150/9450 |
237.3 |
2.81:1 |
