Product Details
The Drill Collars are made of AISI 4145 H or 4145 H Modified alloy steel. Its bore are trepanned from one direction with no mismatch. All drill collars are heat-treated with hardness within 285 to 341 BHN, which are guaranteed one inch below the surface of the pipe.
When order, pls specify:
- Type (slick or spiral grooved)
- Outside and inside diameters and overall length
- Connection size and type
- API Stress relief groove on pin and box ends
- Cast or pressed steel thread protectors
- Elevator recess or not
- Hard-banding or not
DATA SHEET FOR SLICK TYPE DRILL COLLAR |
Size (in) |
Bore (in) |
Connection |
Weight (lb) |
Size (in) |
Bore (in) |
Connection |
Connection |
30 ft |
31 ft |
30 ft |
31 ft |
3 1/8 |
1 1/4 |
NC23 |
651.2 |
673.2 |
6 3/4 |
2 1/4 |
4IF |
3132.8 |
3207.6 |
3 1/4 |
1 1/4 |
NC23 |
715 |
739.2 |
7 |
2 13/16 |
41/2IF |
3258.2 |
3366 |
3 1/2 |
1 1/2 |
2 3/81F |
787.6 |
814 |
7 1/4 |
2 13/16 |
41/2IF |
35354 |
3654.2 |
4 1/8 |
2 |
2 7/81F |
1031.8 |
1067 |
7 1/2 |
2 13/16 |
41/2IF |
3830.2 |
3957.8 |
4 1/4 |
2 |
2 7/81F |
1119.8 |
1157.2 |
7 3/4 |
2 13/16 |
6 5/8 Reg |
4129.4 |
4268 |
4 1/2 |
2 |
2 7/81F |
1287 |
1331 |
8 |
2 13/16 |
6 5/8 Reg |
4439.6 |
4587 |
4 3/4 |
2 1/4 |
NC35 |
1383.8 |
1430 |
8 1/4 |
2 13/16 |
6 5/8 Reg |
4769.6 |
4928 |
5 |
2 1/4 |
31/21F |
1575.2 |
1628 |
8 1/2 |
2 13/16 |
6 5/8 Reg |
5093 |
5262.4 |
5 1/4 |
2 1/4 |
3 1/21F |
1784.2 |
1843.6 |
8 3/4 |
2 13/16 |
6 5/8 Reg |
5440.6 |
5621 |
5 1/2 |
2 1/4 |
31/21F |
1991 |
2057 |
9 |
3 |
7 5/8 Reg |
5695.8 |
5885 |
5 3/4 |
2 1/4 |
4FH |
2219.8 |
2294.6 |
9 1/4 |
3 |
7 5/8 Reg |
6067.6 |
6270 |
6 |
2 1/4 |
NC44 |
2450.8 |
2532.2 |
9 1/2 |
3 |
7 5/8 Reg |
6430.6 |
6644 |
6 1/4 |
2 1/4 |
41F |
2692.8 |
2783 |
9 3/4 |
3 |
7 5/8 Reg |
6815.6 |
7040 |
6 1/2 |
2 1/4 |
41F |
2948 |
3047 |
10 |
3 |
8 5/8 Reg |
7207.2 |
7447 |