Shaanxi FORUS Petroleum Machinery Equipment Co., Ltd
Keep promises,quality assurance!
Add to Cart
Drilling Collar 5 Inch OCTG Thread NC38-50 3 1/2IF Length 9150 MM
Drill Collar Size
| Thread Type | OD | ID | Length(mm) | Diameter of Chamfer Shouder | Reference Bending Strength Ratio | ||
| mm | in | mm | in | ||||
| NC31-41(27/8IF) | 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 |
| NC38-50(31/2IF) | 127 | 5 | 57.2 | 2 1/4 | 9150 | 121 | 2.38:1 |
| NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150 or 9450 | 144.5 | 2.49:1 |
| NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9150 or 9450 | 144.5 | 2.84:1 |
| NC44-62 | 158.8 | Apr-61 | 57.2 | 2 1/4 | 9150 or 9450 | 149.2 | 2.91:1 |
| NC46-62(4IF) | 158.8 | Apr-61 | 71.4 | 2 13/16 | 9150 or 9450 | 150 | 2.63:1 |
| NC46-65(4IF) | 165.1 | Feb-61 | 57.2 | 2 1/4 | 9150 or 9450 | 154.8 | 2.76:1 |
| NC46-65(4IF) | 165.1 | Feb-61 | 71.4 | 2 13/16 | 9150 or 9450 | 154.8 | 3.05:1 |
| NC46-67(4IF) | 171.4 | Apr-63 | 57.2 | 2 1/4 | 9150 or 9450 | 159.5 | 3.18:1 |
| NC50-67(41/2IF) | 171.4 | Apr-63 | 71.4 | 2 13/16 | 9150 or 9450 | 159.5 | 2.37:1 |
| NC50-70(41/2IF) | 177.8 | 7 | 57.2 | 2 1/4 | 9150 or 9450 | 164.7 | 2.54:1 |
| NC50-70(41/2IF) | 177.8 | 7 | 71.4 | 2 13/16 | 9150 or 9450 | 164.7 | 2.73:1 |
| NC50-72(41/2IF) | 184.2 | Apr-71 | 71.4 | 2 13/16 | 9150 or 9450 | 169.5 | 3.12:1 |
| NC56-77 | 196.8 | Apr-73 | 71.4 | 2 13/16 | 9150 or 9450 | 185.3 | 2.70:1 |
| NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150 or 9450 | 190.1 | 3.02:1 |
| 65/xREG | 209.6 | Apr-81 | 71.4 | 2 13/16 | 9150 or 9450 | 195.7 | 2.93:1 |
| NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9150 or 9450 | 212.7 | 3.17:1 |
Drill Collar Use:
One of the most important components of the drill string is to provide drilling pressure to the drill bit and improve the rigidity of the drill string.
Product Description:
Made of AISI4145H chromium molybdenum steel, the content of trace elements is effectively controlled. According to the shape and material of the drill collar, it is divided into three forms:
1. Type A (cylindrical): It is made of ordinary alloy steel, and the cross-section of the pipe body is round drill collars both inside and outside.
2. Type B (spiral): It is made of ordinary alloy steel and has a drill collar with a spiral groove on the outer surface of the pipe.
3. Type C (non-magnetic type): It is made of stainless alloy steel with very low magnetic permeability, and the cross section of the pipe body is round drill collar inside and outside.