
Specifications:. 
  
Drill Collar NO  | 
 OD  | 
 ID  | 
 Length   | 
 Bevel Diameter  | 
 Ref bend g Strength ratio  | ||
| 
 mm  | 
 in  | 
 mm  | 
 in  | ||||
| 
 NC23-31  | 
 79.4  | 
 3 1/8  | 
 31.8  | 
 1 1/2  | 
 9150  | 
 76.2  | 
 2.57:1  | 
| 
 NC26-35(2 3/8 IF)  | 
 88.9  | 
 3 1/2  | 
 38.1  | 
 1 1/2  | 
 9150  | 
 82.9  | 
 2.42:1  | 
| 
 NC31-41(2 7/8 IF)  | 
 104.8  | 
 4 1/8  | 
 50.8  | 
 2  | 
 9150  | 
 100.4  | 
 2.43:1  | 
| 
 NC35-47  | 
 120.6  | 
 4 3/4  | 
 50.8  | 
 2  | 
 9150  | 
 114.7  | 
 2.58:1  | 
| 
 NC38-50(3 1/2 IF)  | 
 127.0  | 
 5  | 
 57.2  | 
 2 1/4  | 
 9150  | 
 121.0  | 
 2.38:1  | 
| 
 NC44-60  | 
 152.4  | 
 6  | 
 57.2  | 
 2 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  | 
 6 1/4  | 
 57.2  | 
 2 1/4  | 
 9150&9450  | 
 149.2  | 
 2.91:1  | 
| 
 NC46-62(4IF)  | 
 158.8  | 
 6 1/4  | 
 71.4  | 
 2 13/16  | 
 9150&9450  | 
 150.0  | 
 2.63:1  | 
| 
 NC46-65(4IF)  | 
 165.1  | 
 6 1/2  | 
 57.2  | 
 2 1/4  | 
 9150&9450  | 
 154.8  | 
 2.76:1  | 
| 
 NC46-65(4IF)  | 
 165.1  | 
 6 1/2  | 
 71.4  | 
 2 13/16  | 
 9150&9450  | 
 154.8  | 
 3.05:1  | 
| 
 NC46-67(4IF)  | 
 171.4  | 
 6 3/4  | 
 57.2  | 
 2 1/4  | 
 9150&9450  | 
 159.5  | 
 3.18:1  | 
| 
 NC50-67(4 1/2 IF)  | 
 171.4  | 
 6 3/4  | 
 71.4  | 
 2 13/16  | 
 9150&9450  | 
 159.5  | 
 2.37:1  | 
| 
 NC50-70(4 1/2 IF)  | 
 177.8  | 
 7  | 
 57.2  | 
 2 1/4  | 
 9150&9450  | 
 164.7  | 
 2.54:1  | 
| 
 NC50-70(4 1/2 IF)  | 
 177.8  | 
 7  | 
 71.4  | 
 2 13/16  | 
 9150&9450  | 
 164.7  | 
 2.73:1  | 
| 
 NC50-72(4 1/2 IF)  | 
 184.2  | 
 7 1/4  | 
 71.4  | 
 2 13/16  | 
 9150&9450  | 
 169.5  | 
 3.12:1  | 
| 
 NC56-77  | 
 196.8  | 
 7 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 5/8 REG  | 
 209.6  | 
 8 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  | 
 212.6  | 
 3.17:1  | 
| 
 7 5/8 REG  | 
 241.3  | 
 9 1/2  | 
 76.2  | 
 3  | 
 9150&9450  | 
 223.8  | 
 2.81:1  | 
| 
 NC70-97  | 
 247.6  | 
 9 3/4  | 
 76.2  | 
 3  | 
 9150&9450  | 
 232.8  | 
 2.57:1  | 
| 
 NC70-100  | 
 254  | 
 10  | 
 76.2  | 
 3  | 
 9150&9450  | 
 237.3  | 
 2.81:1  | 
| 
 8 5/8 REG  | 
 279.4  | 
 11  | 
 76.2  | 
 3  | 
 9150&9450  | 
 266.7  | 
 2.84:1  | 

  

