Non Magnetic Drill Collars
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Non Magnetic Drill Collars
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Features
Basic Infomation
Place of Origin: CHINA
Brand Name: ROSCHEN
Certification: API
Model Number: 4.75" , 6.5", 8", 8.25",
High Light:

Non Magnetic Drill Collar

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Short nonmagnetic drill collars

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drill collars

Payment & Shipping Terms
Packaging Details: Wooden Box or Bundle
Supply Ability: 20000sets/M
Specifications
Product Description

 

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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Tel : 13764195009
Fax : 86-021-54380177
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