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| Place of Origin | CHINA |
| Brand Name | ROSCHEN |
| Certification | API |
| Model Number | 4.75" , 6.5", 8", 8.25", |
NON-MAGNETIC DRILL COLLAR 6.500” NC50 FLEXI COLLAR
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.
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 |
Drill Collars
Command Tubular’s drill collars are made of modified AISI 4145H chromium molybdenum alloy steel. These drill collar bars are full-length heat treated and water quenched to obtain mechanical properties as specified by API Spec 7-1.
Full mechanical and chemical mill test certifications are supplied with all drill collars. These mill test certifications guarantee a hardness range of 285 to 341 BHN and an impact value of 40 ft-lbs at room temperature, one inch below surface.
All drill collar bars are trepanned then drifted to API specifications to ensure close tolerance bores. Drill collars are also supplied with the outer surface either machined or rough peeled.
For more information please contact:
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
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