Shandong Kerui Petroleum Equipment Co.,Ltd
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Drill collar
Operative Standards: API Spec 7API Spec RP7G
Drill Collar Specifications:
|
Thread Type |
OD / D |
ID / d |
Length /L |
|||
|
mm |
in |
Mm |
in |
|||
|
NC26-35 |
88.9 |
3 1/2 |
31.8 |
1 1/2 |
9150 |
|
|
NC35-47 |
120.7 |
4 3/4 |
50.8 |
2 |
9150 |
|
|
NC46-62(4IF) |
158.8 |
6 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
|
|
NC46-65(4IF) |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150 or 9450 |
|
|
NC50-70(41/2IF) |
177.8 |
7 |
71.4 |
2 13/16 |
9150 or 9450 |
|
|
NC56-80 65/8REG |
203.2 |
8 |
71.4 |
2 13/16 |
9150 or 9450 |
|
|
NC61-90 75/8REG |
228.6 |
9 |
71.4 |
2 13/16 |
9150 or 9450 |
|