 |
|
Drill Collar number and connection label |
Outside diameter |
Inside diameter |
Length |
Bevel diameter |
Reference bending strength ratio |
||
|
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
(mm) |
||
|
NC23-31 |
79.4 |
3 1/8 |
31.8 |
1 1/4 |
9150 |
76.2 |
2.57:1 |
|
NC26-35(2 3/8IF) |
88.9 |
3 1/2 |
38.1 |
1 1/2 |
9150 |
82.9 |
2.42:1 |
|
NC31-41(2 7/8IF) |
104.8 |
4 1/8 |
50.8 |
2 |
9150 |
100.4 |
2.43:1 |
|
NC35-47 |
120.7 |
4 3/4 |
50.8 |
2 |
9150 |
114.7 |
2.58:1 |
|
NC3850(3 1/2IF) |
127.0 |
5 |
57.2 |
2 1/4 |
9150 |
121.0 |
2.38:1 |
|
NC44-60 |
152.4 |
6 |
57.2 |
2 1/4 |
9150or9450 |
144.5 |
2.49:1 |
|
NC44-62 |
158.8 |
6 1/4 |
57.2 |
2 1/4 |
9150or9450 |
149.2 |
2.91:1 |
|
NC46-62(4IF) |
158.8 |
6 1/4 |
71.4 |
2 13/16 |
9150or9450 |
150.0 |
2.63:1 |
|
NC46-65(4IF) |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150or9450 |
154.8 |
2.76:1 |
|
NC46-65(4IF) |
165.1 |
6 1/2 |
71.4 |
2 13/16 |
9150or9450 |
154.8 |
3.05:1 |
|
NC46-67(4IF) |
171.4 |
6 3/4 |
57.2 |
2 1/4 |
9150or9450 |
159.5 |
3.18:1 |
|
NC50-67(4 1/2IF) |
171.4 |
6 3/4 |
71.4 |
2 13/16 |
9150or9450 |
159.5 |
2.37:1 |
|
NC50-70(4 1/2IF) |
177.8 |
7 |
57.2 |
2 1/4 |
9150or9450 |
164.7 |
2.54:1 |
|
NC50-70(4 1/2IF) |
177.8 |
7 |
71.4 |
2 13/16 |
9150or9450 |
164.7 |
2.73:1 |
|
NC50-72(4 1/2IF) |
184.2 |
7 1/4 |
71.4 |
2 13/16 |
9150or9450 |
169.5 |
3.12:1 |
|
NC50-65 |
166.7 |
6 1/2 |
71.4 |
2 13/16 |
9150or9450 |
166.7 |
2.06:1 |
|
NC50-77 |
196.8 |
7 3/4 |
71.4 |
2 13/16 |
9150or9450 |
185.3 |
2.70:1 |
|
NC50-80 |
203.2 |
8 |
71.4 |
2 13/16 |
9150or9450 |
190.1 |
3.02:1 |
|
6 5/8REG |
209.6 |
8 1/4 |
71.4 |
2 13/16 |
9150or9450 |
195.7 |
2.93:1 |
|
NC61-90 |
228.6 |
9 |
71.4 |
2 13/16 |
9150or9450 |
212.7 |
3.17:1 |
|
7 5/8REG |
241.3 |
9 1/2 |
76.2 |
3 |
9150or9450 |
223.8 |
2.81:1 |
|
NC70-97 |
247.6 |
9 3/4 |
76.2 |
3 |
9150or9450 |
232.6 |
2.57:1 |
|
NC70-100 |
254.0 |
10 |
76.2 |
3 |
9150or9450 |
237.3 |
2.81:1 |
|
8 5/8REG |
279.4 |
11 |
76.2 |
3 |
9150or9450 |
266.7 |
2.84:1 |
