Non Magnetic Slick Drill Collars
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Non Magnetic Slick Drill Collars
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Features
Basic Infomation
Place of Origin: CHINA
Brand Name: ROSCHEN
Certification: API
Model Number: 4.75inch 6.75inch ,8inch , 8.25inch,9.5inch
High Light:

Non Magnetic Slick Drill Collars

,

Slick Drill Collars

,

Non Magnetic Spiral Drill Collars

Payment & Shipping Terms
Packaging Details: Wooden box, Bundle
Supply Ability: 20000sets/m
Specifications
Product Description

 

Non-Magnetic Slick Drill Collars

 

ROSCHEN Supply Group offers new drill collars. Drill collars comprise about one-third of all product sales for ROSCHEN Supply Group. The new drill collars we provide come from only reputable steel manufacturers and are made to outperform all industry requirements.

 

In their initial phase of manufacturing, drill collars are solid round bars of 4145 carbon steel. The bars are then quenched and tempered in a heat treatment process to attain the required metallic properties and hardness for drilling. Once heat treatment is complete, a hole is machined through the bar in a coring/honing process known as trepanning. This hole is better known as the ID or the inner diameter. After the trepanning is complete, the ends are machine threaded which makes the connections.

 

Non-Magnetic Slick Drill Collar 4.750” NC38

Specification   Tool Joint/Connection Specifications
Nominal OD 4 3/4"(4.75") Connection NC38 Bend Stress Ratio  
Nominal ID 2 11/16"(2.6875") OD 4 3/4" (4.75") ID 2 11/16"(2.6875")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength 587300lbs Torsional Strength 18100 lb/ft
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 2 9/16"(2.5625") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 18%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 120,00 psi Minimum
827 Mpa
Yield Strength 110,00 psi Minimum
758 Mpa
Impact Strength Above 60J lb/ft charpy V notch
Hardness(Brinell) Minimum 285 BHN

 

Non-Magnetic Slick Drill Collar 6.750” NC50

 

Specification   Tool Joint/Connection Specifications
Nominal OD 6 3/4"(6.75") Connection NC50 Bend Stress Ratio  
Nominal ID 3 1/4"(3.25") OD 6 3/4" (6.75") ID 3 1/4"(3.25")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength   Torsional Strength  
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 3 1/8"(3.125") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 18%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 120,00 psi Minimum
827 Mpa
Yield Strength 110,00 psi Minimum
758 Mpa
Impact Strength Above 60J lb/ft charpy V notch
Hardness(Brinell) Minimum 285 BHN

 

Non-Magnetic Drill Collar 8.000” x 6 5/8” REG Drill Collar

Specification   Tool Joint/Connection Specifications
Nominal OD 8"(8") Connection 6 5/8 REG Bend Stress Ratio  
Nominal ID 2 13/16"(2.8125") OD 8"(8") ID 2 13/16"(2.8125")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength   Torsional Strength  
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 3 11/16"(3.6875") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 20%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 110,00 psi Minimum
758 Mpa
Yield Strength 100,00 psi Minimum
689 Mpa
Impact Strength Above 60J lb/ft
Hardness(Brinell) Minimum 285 BHN

 

Non-Magnetic Drill Collar 8.250” x 6 5/8” REG

Specification   Tool Joint/Connection Specifications
Nominal OD 8 1/4" (8.25") Connection 6 5/8 REG Bend Stress Ratio  
Nominal ID 3 1/2"(3.5") OD 8 1/4"(8.25") ID 3 1/4"(3.25")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength   Torsional Strength  
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 3 3/8"(3.325") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 20%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 110,00 psi Minimum
758 Mpa
Yield Strength 100,00 psi Minimum
689 Mpa
Impact Strength Above 60J lb/ft
Hardness(Brinell) Minimum 285 BHN

 

Non-Magnetic Drill Collar 9.500” x 7 5/8” REG

Specification   Tool Joint/Connection Specifications
Nominal OD 9 1/2" 9.5") Connection 7 5/8 REG Bend Stress Ratio  
Nominal ID 3 "(3") OD 9 1/2"(9.5") ID 3 "(3")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength   Torsional Strength  
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 2 7/8"(2.875") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 20%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 110,00 psi Minimum
758 Mpa
Yield Strength 100,00 psi Minimum
689 Mpa
Impact Strength Above 60J lb/ft
Hardness(Brinell) Minimum 285 BHN

 

Non-Magnetic Drill Collar 9.500” x 7 5/8” REG

Specification   Tool Joint/Connection Specifications
Nominal OD 9 1/2" 9.5") Connection 7 5/8 REG Bend Stress Ratio  
Nominal ID 3 1/32 "(3.031") OD 9 1/2"(9.5") ID 3 1/32 "(3.031")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength   Torsional Strength  
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 2 29/32"(2.9063") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 20%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 110,00 psi Minimum
758 Mpa
Yield Strength 100,00 psi Minimum
689 Mpa
Impact Strength Above 60J lb/ft
Hardness(Brinell) Minimum 285 BHN

 

Non-Magnetic Drill Collar 9.500” x 7 5/8” REG

Specification   Tool Joint/Connection Specifications
Nominal OD 9 1/2" 9.5") Connection 7 5/8 REG Bend Stress Ratio  
Nominal ID 4 "(4") OD 9 1/2"(9.5") ID 4 "(4")
Material Grade P530 Adjusted Weight   Average Length 31.00 ft
Grain Size ASTM Tensile Strength   Torsional Strength  
Magnetic Permeability 1.001max Recommended Make Up Torque   Maximum Make Up Torque  
Drift Size 3 3/8"(3.325") Slip Recess N/A Elevator Recess N/A
Hardbanding None Fluid Displacement   Fluid capacity  
IPC None   Inspection Criteria NS-2 Elongation 20%
Chemical Properties Phosphorus <0.05%  
Sulphur <0.03%
Average Weight Per Joint  
Manufacturing Criteria API Spec7-1
Drill Collar Capacities
Tensile Strength 110,00 psi Minimum
758 Mpa
Yield Strength 100,00 psi Minimum
689 Mpa
Impact Strength Above 60J lb/ft
Hardness(Brinell) Minimum 285 BHN

 

 

About Drill Collars

 

Drill collars are extremely heavy-duty industrial tubular used to drill into the ground and are used in conjunction with drill pipe. While drill pipe makes up the majority length of a drill string, drill collars make up only a small amount. For example: a 10,000ft drill string may be comprised of 9,000ft of drill pipe, and only 500ft of drill collars. Much like drill pipe, drill collars are made in 31ft lengths and are screwed together vertically on the drilling rig. In contrast, to drill pipe, drill collars are thick-walled and heavy, with very limited flexibility. Drill collars are used at the bottom of the drill string, just above the drill bit. They are used mainly for weight on the drill bit but also work as a shock absorber to dampen the vibrations and impact forces caused by drilling. There are two main types of drill collars, slick or spiral grooved, however, both styles accomplish the same task. Spiral groove drill collars were introduced in more recent years and are thought to help prevent the drill string from getting stuck in the hole by allowing drilling debris and lubricant to pass more freely around the drill collar.

 

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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Contact Person : Mr. Bill, George, Michael
Tel : 13764195009
Fax : 86-021-54380177
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