Drill collar specification
| Number and connection lable |
Outside
Diameter |
Inside
Diameter |
Length
mm |
Bevel
Diameter
mm |
Bending
Strength
Ratio |
| mm |
in |
mm |
in |
| NC38-50(31/2IF) |
127 |
5(in) |
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 |
6 1/4 |
57.2 |
2 1/4 |
9150 or 9450 |
149.2 |
2.91:1 |
| NC44-62(4IF) |
158.8 |
6 1/2 |
71.4 |
2 13/16 |
9150 or 9450 |
150 |
2.63:1 |
| NC44-65(4IF) |
165.1 |
6 1/2 |
57.2 |
2 1/4 |
9150 or 9450 |
154.8 |
2.76:1 |
| NC44-65(4IF) |
165.1 |
6 1/2 |
71.4 |
2 13/16 |
9150 or 9450 |
154.8 |
3.05:1 |
| NC44-67(4IF) |
171.4 |
6 3/4 |
57.2 |
2 1/4 |
9150 or 9450 |
159.5 |
3.18:1 |
| NC50-672(41/2IF) |
171.4 |
6 3/4 |
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 |
7 1/4 |
71.4 |
2 13/16 |
9150 or 9450 |
169.5 |
3.12:1 |
| NC56-77 |
196.8 |
7 3/4 |
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 |
| 6 5/8 REG |
209.6 |
8 1/4 |
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 |
| 7 5/8 REG |
241.3 |
9 1/2 |
76.2 |
3 |
9150 or 9450 |
223.8 |
2.81:1 |
| NC70-97 |
247.6 |
9 3/4 |
76.2 |
3 |
9150 or 9450 |
232.6 |
2.57:1 |
| NC70-100 |
254 |
10 |
76.2 |
3 |
9150 or 9450 |
237.3 |
2.81:1 |
| 8 5/8 REG |
279.4 |
11 |
76.2 |
3 |
9150 or 9450 |
266.7 |
2.84:1 |
| Slips and elevator grooves can be produced upon the customers' requirement. | |
Products list :
Contact us :
TEL:+86-512-58992029
FAX:+86-512-58999077
ADD:
Goldenway building, 67# Nanhuan Road, Zhangjiagang City, Jiangsu, China
E-MAIL:
wensheng@goldenway-tex.com