|
|
 |
| |
 DC |
|
DRILL COLLAR
The Drill Collar is made of AISI 4145H or 4145 H modified Alloy Steel. Its bores are trepanned from one direction with no mismatch. All Drill Collars are Q & T overall length to ensure the hardness within 285 and 341 BHN with one inch below the surface.
The Physical Properties
|
OD (in) |
Tensile Strength (Mpa) |
Yield Strength (Mpa) |
Elongation (L=4D) (%) |
Impact AKV (J) |
Brinell Hardness (HB) |
|
3 1/8~6 3/4 |
Not less than 965 |
not Less than 758 |
Not less than 13 |
Not less than 54 |
Not less than 285 |
|
7~10 |
Not less than 930 |
Not less than 689 |
Not less than 13 |
Not less than 54 |
Not less than 285 | |
|
Size OD (in) |
Bore ID (in) |
Connection |
Approx Weight (kg) |
|
30 ft |
31 ft |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 3/4 |
2 1/4 |
4FH |
1009 |
1043 |
|
6 |
2 1/4 |
NC44 |
1114 |
1151 |
|
6 1/4 |
2 1/4 |
4IF |
1224 |
1265 |
|
6 1/2 |
2 1/4 |
4IF |
1340 |
1385 |
|
6 3/4 |
2 1/4 |
4IF |
1024 |
1058 |
|
7 |
2 13/16 |
4 1/2IF |
1481 |
1530 |
|
7 1/4 |
2 13/16 |
4 1/2IF |
1607 |
1661 |
|
7 1/2 |
2 13/16 |
4 1/2IF |
1741 |
1799 |
|
7 3/4 |
2 13/16 |
6 5/8Reg |
1877 |
1940 |
|
8 |
2 13/16 |
6 5/8 Reg |
2018 |
2085 |
|
8 1/4 |
2 13/16 |
6 5/8 Reg |
2168 |
2240 |
|
8 1/2 |
2 13/16 |
6 5/8 Reg |
2315 |
2392 |
|
8 3/4 |
2 13/16 |
6 5/8 Reg |
2473 |
2555 |
|
9 |
3 |
7 5/8 Reg |
2589 |
2675 |
|
9 1/4 |
3 |
7 5/8 Reg |
2758 |
2850 |
|
9 1/2 |
3 |
7 5/8 Reg |
2923 |
3020 |
|
9 3/4 |
3 |
7 5/8 Reg |
3098 |
3200 |
|
10 |
3 |
8 5/8 Reg |
3276 |
3385 |
|
Order Instructions:
- Type (Slick or Spiral grooved)
- Outside and inside size and overall length
- Connection type and size
- API Stress relief Groove on pin and box ends
- Cast or pressed steel thread protectors
- other special request, for example: slips or elevator recess and hard
banding style.
|
NON-MAGNETIC DRILL COLLARS
Materials of Non-magnetic Drill Collars are made from chrome manganese low carbon
austenitic alloy with the following characteristics:
-
The chemical composition should be controlled strictly during the refining and forging process.
-
With excellent lower Magnetic permeability, high strength of mechanical properties and outstanding resistant to stress corrosion cracking and no tendency to galling.
|
|
Mechanical Properties |
|
Size OD (in) |
Yield Strength (Mpa) |
Tensile Strength (Mpa) |
Elongation (%) |
Reduction of area (%) |
Impact AKV (ft.lb) |
|
3 1/8~6 3/4 |
not less than 758 |
not less than 827 |
not less than 18 |
50 |
not less than 50 |
|
7~10 |
not less than 689 |
not less than 758 |
not less than 20 |
50 |
not less than 50 |
|
|
|
Order Instructions
- Size of Non-magnetic Drill Collar
- Length
- Connection Type
- API Stress relief recess
- other speical request.
| , |
| |
|
|
 |
| Contacts Us |
Add:
Room.1201 ,No.1 Building, Yingkou Roud, Yangpu District
Shanghai, China 200433
Tel:+86-21-5881-1945
Fax:
+86-21-5523-8689
Email:sales@mastpetroequip.com
|
|
