- Product Name
- Product Keyword
- Product Model
- Product Summary
- Product Description
- Multi Field Search
Roschen Global
 |
| Quantity: | |
|---|---|
NON-Magnetic Drill Collar 6.75inch 8inch
ROSCHEN
ROS-DC-NM 6.75/8 ...
Product Description
NON-Magnetic Drill Collar FLEXI Collar 6.75inch 8inch
Non-Magnetic Drill Collars
Command Tubular’s Non-magnetic drill collars are an integral heavy duty joint that are constructed from a solid bar of austenitic stainless steel. Our non-magnetic drill collars are supplied with a machined surface finish condition.
All non-magnetic collars are hot/cold worked in order to provide them with the necessary mechanical properties. The bars are then trepanned, hot spot inspected and machined. An internal bore treatment is performed on the full length in order to achieve the proper compressive status of the internal diameter.
This provides the collar with optimal resistance to stress corrosion cracking. All of our drill collars are manufactured in accordance with API spec 7, Q1 and recommended practice 7G as applicable.
NON-MAGNETIC DRILL COLLAR 4.75” NC38 FLEXI COLLAR | ||
Specification | ||
Nominal OD | 4 3/4"(4.75") | |
Nominal ID | 2 11/16"(2.685") | |
Matrial Grade | P530 | |
Grain Size | 3-5 ASTM | |
Magnetic Permeability | 1.001max. | |
Drift Size | 2 9/16"(2.5625") | |
IPC | None | |
Chemical Properties | Phosphorus | <0.05% |
Sulphur | <0.03% | |
Average Weight Per Joint | ||
Manufacturing Criteria | API Spec7-1 | |
Drill Collar Capacities | ||
Tensile Strength | 130.5 KSI | |
120 KSI Min | ||
Yield Strength | 121.4 KSI | |
110 KSI Min | ||
Impact Strength | 171 IB/ft | |
Charpy V Notch | ||
Hardness(Brinell) | 311-321 BHN | |
Tool Joint/Connection Specifications | |||
Connection | NC38 | ||
OD | 4 3/4"(4.75") | ID | 2 11/16"(2.6875") |
Adjusted Weight | Average Length | 31.00 ft | |
Tensile Strength | 587300Ibs | Torsional Strength | 18100Ib/ft |
Recommended Make Up Torque | 9700Ib/ft | Maximum Make Up Torque | |
Elongation | 18% | Fluid Displacement | |
Fluid Capacity | 0.360 gal/ft | Elevator Recess | n/a |
Slip Recess | n/a | Inspection Criteria | NS-2 |
NON-MAGNETIC DRILL COLLAR 6.500” NC50 FLEXI COLLAR | ||
Specification | ||
Nominal OD | 6 1/2"(6.5") | |
Nominal ID | 3 1/4"(3.25") | |
Matrial Grade | P530 | |
Grain Size | 1-2 ASTM | |
Magnetic Permeability | 1.001max. | |
Drift Size | 3 1/8"(3.125") | |
IPC | None | |
Chemical Properties | Phosphorus | <0.05% |
Sulphur | <0.03% | |
Average Weight Per Joint | ||
Manufacturing Criteria | API Spec7-1 | |
Drill Collar Capacities | ||
Tensile Strength | 128.1 KSI | |
120 KSI Min | ||
Yield Strength | 119.2 KSI | |
110 KSI Min | ||
Impact Strength | 181 Ib/ft | |
Charpy V Notch | ||
Hardness(Brinell) | 296-303 BHN | |
Tool Joint/Connection Specifications | |||
Connection | NC50 | ||
OD | 6 1/2"(6.5") | ID | 3 1/4"(3.25") |
Adjusted Weight | Average Length | 31.00 ft | |
Tensile Strength | 560,800Ibs | Torsional Strength | 71,240Ib/ft |
Recommended Make Up Torque | 26700Ib/ft | Maximum Make Up Torque | |
Elongation | 18% | Fluid Displacement | |
Fluid Capacity | 0.698 gal/ft | Elevator Recess | n/a |
Slip Recess | n/a | Inspection Criteria | NS-2 |
NON-MAGNETIC DRILL COLLAR 6.750” NC50 FLEXI COLLAR | ||
Specification | ||
Nominal OD | 6 3/4"(6.75") | |
Nominal ID | 3 1/4"(3.25") | |
Matrial Grade | P530 | |
Grain Size | 2-4 ASTM | |
Magnetic Permeability | 1.001max. | |
Drift Size | 3 1/8"(3.125") | |
IPC | None | |
Chemical Properties | Phosphorus | <0.05% |
Sulphur | <0.03% | |
Average Weight Per Joint | ||
Manufacturing Criteria | API Spec7-1 | |
Drill Collar Capacities | ||
Tensile Strength | 132.9 KSI | |
120 KSI Min | ||
Yield Strength | 123.7 KSI | |
110 KSI Min | ||
Impact Strength | 170 Ib/ft | |
Charpy V Notch | ||
Hardness(Brinell) | 306-316 BHN | |
Tool Joint/Connection Specifications | |||
Connection | NC50 | ||
OD | 6 3/4"(6.75") | ID | 3 1/4"(3.25") |
Adjusted Weight | Average Length | 31.00 ft | |
Recommended Make Up Torque | Maximum Make Up Torque | ||
Elongation | 18% | Fluid Displacement | |
Fluid Capacity | Elevator Recess | n/a | |
Slip Recess | n/a | Inspection Criteria | NS-2 |
NON-MAGNETIC DRILL COLLAR 8.000” 6-5/8” REG FLEXI COLLAR | ||
Specification | ||
Nominal OD | 8"(8") | |
Nominal ID | 3 1/2"(3.5") | |
Matrial Grade | P530 | |
Grain Size | 3-4 ASTM | |
Magnetic Permeability | 1.001max. | |
Drift Size | 3 3/8"(3.325") | |
IPC | None | |
Chemical Properties | Phosphorus | <0.05% |
Sulphur | <0.03% | |
Average Weight Per Joint | ||
Manufacturing Criteria | API Spec7-1 | |
Drill Collar Capacities | ||
Tensile Strength | 130.5 KSI | |
120 KSI Min | ||
Yield Strength | 120.5 KSI | |
100 KSI Min | ||
Impact Strength | 146 Ib/ft | |
Charpy V Notch | ||
Hardness(Brinell) | 298-302 BHN | |
Tool Joint/Connection Specifications | |||
Connection | 6 5/8" REG | ||
OD | 8"(8") | ID | 3 1/2"(3.5") |
Adjusted Weight | Average Length | 31.00 ft | |
Recommended Make Up Torque | Maximum Make Up Torque | ||
Elongation | 20% | Fluid Displacement | |
Fluid Capacity | Elevator Recess | n/a | |
Slip Recess | n/a | Inspection Criteria | NS-2 |
NON-MAGNETIC DRILL COLLAR 8.250” 6-5/8” REG FLEXI COLLAR | ||
Specification | ||
Nominal OD | 8 1/4"(8.25") | |
Nominal ID | 3 1/2"(3.5") | |
Matrial Grade | P530 | |
Grain Size | ASTM | |
Magnetic Permeability | 1.001max. | |
Drift Size | 3 3/8"(3.325") | |
IPC | None | |
Chemical Properties | Phosphorus | <0.05% |
Sulphur | <0.03% | |
Average Weight Per Joint | ||
Manufacturing Criteria | API Spec7-1 | |
Drill Collar Capacities | ||
Tensile Strength | 110,000 psi min | |
758 Mpa min | ||
Yield Strength | 100,000 psi min | |
689 Mpa min | ||
Impact Strength | above 60J ft/Ibs | |
Hardness(Brinell) | 285 BHN Minimum | |
Tool Joint/Connection Specifications | |||
Connection | 6 5/8" REG | ||
OD | 8 1/4"(8.25") | ID | 3 1/2"(3.5") |
Adjusted Weight | Average Length | 31.00 ft | |
Recommended Make Up Torque | Maximum Make Up Torque | ||
Elongation | 20% | Fluid Displacement | |
Fluid Capacity | Elevator Recess | n/a | |
Slip Recess | n/a | Inspection Criteria | NS-2 |
Non-magnetic drilling tools include Non-Magnetic Drill Collar/Flex Collar, Stabilizer, MWD components etc.
The material is high purity austenitic stainless steel.
Strict control of chemical composition and special forging process guarantee the excellent mechanical properties of Non-magnetic drilling tools.
Corrosion resistance specification, all Non-magnetic drill collars can pass the corrosion test specified in ASTM A 262 Practice E.
Non Magnetic Properties:
1) Relative Permeability: Max 1.005
2) Hot Spot / Field Gradient :MAX ±0.05μT
3) Special Treatment on ID: Roller Burnishing.
Advantages are as following:
1) Increase the corrosion resistance properties;
2) Increase the surface hardness of bore up to HB400;
3) Increase surface finish of bore to Ra≤3.2 μm
4. Test and Inspection carried out on each bar during production of NMDC, Stabilizer and MWD parts:
1) Chemical Composition;
2) Tensile Test;
3) Impact Test;
4) Hardness Test;
5) Metallographic Test (Grain Size);
6) Corrosion Test (According to ASTM A 262 Practice E);
7) Ultrasonic Test over the whole length of the bar (According to ASTM A 388);
8) Relative magnetic permeability Test;
9) Hot spot Test
10) Dimension Inspection
Etc
For more information please contact:
ROSCHEN INC.
ROSCHEN GROUP LIMITED
ROSCHEN HOLDINGS LIMITED
Skype: ROSCHEN.TOOL , ROSCHEN_GROUP
WeChat: +86-137 6419 5009 ; +86-135 8585 5390
WhatsApp: +86-137 6419 5009 ; +86-135 8585 5390
Email: roschen@roschen.com ; roschen@roschen.net
Website: http://www.roschen.com ; http://www.roschen.net
