Tricone Bit ( 142 )- TCI Tricone Bit ( 76 )
- Steel Tooth Tricone Bit ( 22 )
- Water Wells Tricone Bit ( 27 )
- Oil Wells Tricone Bit ( 14 )
- Mining Wells Tricone Bit ( 3 )
- Hole Opener ( 32 )
- Roller Cones Hole Opener ( 18 )
- PDC Hole Opener ( 4 )
- Water Wells Hole Opener ( 4 )
- Trenchless Drilling ( 1 )
- HDD Hole Opener ( 5 )
- Roller Cone bit ( 23 )
- Welding Type Cones Bit ( 16 )
- Replacement Type Cones ( 7 )
- PDC Bit ( 27 )
- Steel Body PDC Bit ( 12 )
- Matrix Body PDC Bit ( 14 )
- Concave PDC Bit ( 1 )
- Core Barrel ( 4 )
- Drag Bit ( 15 )
- PDC Drag Bit ( 6 )
- Step Drag Bit ( 9 )
- DTH Drilling Tools ( 15 )
- DTH Hammer Bit ( 10 )
- DTH Hammer ( 5 )
- Core Bit ( 3 )
- PDC Core Bit ( 1 )
- Impregnated Diamond Core Bit ( 2 )
- Drill Pipe ( 5 )
- Water Wells Drill Pipe ( 5 )
- Drill Collar ( 6 )
- Spiral Drill Collars ( 3 )
- Non-magnetic Drill Collar ( 1 )
- Slick Drill Collar ( 2 )
- Drill Stabilizer ( 1 )
- Single Cone Bit ( 1 )
- Drilling Tools ( 4 )
- Cross-over Sub ( 1 )
- PDC Cutters ( 1 )
- Bit Breaker ( 1 )
- Tricone Bit Nozzle ( 1 )
- Contact Person: Ms. Jenny
- View Contact Details
Drill Collar
Hejian Deris can supply Non-magnetic Drill Collar, Spiral Drill Collar, and Slick Drill Collar as per customers` requirements. Designed and manufactured strictly according to API Spec 7-1.
Drill Collars are one of the parts of a drill`s string. Drill for the Collars is meant to provide weight for drilling purposes. The Drill Collars are thick walled tube like pieces that are machined from solid steel bars, although they are often made from plain carbon steel or the non magnetic alloy of copper and steel or other premium alloys that are non magnetic in nature. Drill collar has bars of solid steel that are drilled from one end to the other to provide a passage for pumping the drilling fluids through the collar.
Main Technical Parameters
| Drill Collar Thread
| OD | ID | Length | | ||
| | ||||||
| | ||||||
| mm | in | mm | in | mm | | |
| NC31-41(27/8IF) | 104.8 | 4 1/8 | 50.8 | 2 | 9150 | |
| NC35-47 | 120.7 | 4 3/4 | 50.8 | 2 | 9150 | |
| NC38-50(31/2IF) | 127 | 5 | 57.2 | 2 1/4 | 9150 | |
| NC44-60 | 152.4 | 6 | 57.2 | 2 1/4 | 9150or9450 | |
| NC44-60 | 152.4 | 6 | 71.4 | 2 13/16 | 9150or9450 | |
| NC44-62 | 158.8 | 6 1/4 | 57.2 | 2 1/4 | 9150or9450 | |
| NC46-62(4IF) | 158.8 | 6 1/4 | 71.4 | 2 13/16 | 9150or9450 | |
| NC46-65(4IF) | 165.1 | 6 1/2 | 57.2 | 2 1/4 | 9150or9450 | |
| NC46-65(4IF) | 165.1 | 6 1/2 | 71.4 | 2 13/16 | 9150or9450 | |
| NC46-67(4IF) | 171.4 | 6 3/4 | 57.2 | 2 1/4 | 9150or9450 | |
| NC50-67(41/2IF) | 171.4 | 6 3/4 | 71.4 | 2 13/16 | 9150or9450 | |
| NC50-70(41/2IF) | 177.8 | 7 | 57.2 | 2 1/4 | 9150or9450 | |
| NC50-70(41/2IF) | 177.8 | 7 | 71.4 | 2 13/16 | 9150or9450 | |
| NC50-72(41/2IF) | 184.2 | 7 1/4 | 71.4 | 2 13/16 | 9150or9450 | |
| NC56-77 | 196.8 | 7 1/4 | 71.4 | 2 13/16 | 9150or9450 | |
| NC56-80 | 203.2 | 8 | 71.4 | 2 13/16 | 9150or9450 | |
| 65/xREG | 209.6 | 8 1/4 | 71.4 | 2 13/16 | 9150or9450 | |
| NC61-90 | 228.6 | 9 | 71.4 | 2 13/16 | 9150or9450 | |
