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NC-46 Connection Heavy Weight Drill Pipe 4 1/2inch

Standard HWDP was developed to provide a gradual transition from heavy drill collars to relatively lightweight drill pipe.
This intermediate-weight pipe has a wall thickness of approximately 1 in. and helps prevent stress concentration at the top of the drill collar section. Heavy weight drill pipe also enables drilling at higher RPMs, reducing torque and differential pressure sticking.
Availability:
Quantity:
  • HWDP 4 1/2"
  • ROSCHEN
  • ROS-HWDP-4 1/2

Product Description


Heavy Weight Drill Pipe 4 1/2”NC-46 Connection


A Heavy Weight Drill Pipe (HWDP) looks like a normal drill pipe except for an upset centered along the tube which helps to prevent excessive buckling.

 

Its wall thickness is up to 3 times that of a similar-sized normal drill pipe to add additional weight to the bit.

 

HWDP is used most commonly in directional drilling because it bends more easily and helps to control torque and fatigue in high-angle operations.


HWDP is used as a transitional stiffness section, typically between the stiff and rigid drill collars and the relatively light and flexible drill pipe joints to reduce fatigue failures directly above the bottom hole assembly.


Nominal Size   (Tube OD)

Tube

Tool Joint (in)


ID (in)

Elevator Upset

Center Upset

Connection Type   & Size

OD (in)

ID (in)

2-7/8

1-1/2

2-15/16

3-5/16

NC 26 (2-3/8 IF)

3-3/8

1-1/2

3-1/2

2-1/16

3-7/8

4

NC 38 (3-1/2 IF)

4-3/4 (4-7/8,5)

2-1/16

3-1/2

2-1/4

3-7/8

4

NC 38 (3-1/2 IF)

4-3/4 (4-7/8,5)

2-1/4

4

2-9/16

4-3/16

4-1/2

NC 40 (4FH)

5-1/4

2-9/16

4

2-1/2

4-3/16

4-1/2

NC 40 (4 FH)

5-1/4

2-1/2

4-1/2

2-3/4

4-11/16

5

NC 46 (4 IF)

6-1/4

2-3/4

4-1/2

2-11/16

4-11/16

5

NC 46 (4 IF)

6-1/4

2-11/16

4-1/2

2-13/16

4-11/16

5

NC 46 (4 IF)

6-1/4

2-13/16

5

3

5-1/8

5-1/2

NC 50 (4-1/2 IF)

6-5/8

3

5-1/2

3-1/4

5-11/16

6

5-1/2 FH

7 (7-1/4,7-1/2)

3-1/4

5-1/2

3-3/8

5-11/16

6

5-1/2 FH

7 (7-1/4,7-1/2)

3-3/8

5-1/2

3-7/8

5-11/16

6

5-1/2 FH

7 (7-1/4,7-1/2)

3-7/8

5-1/2

4

5-11/16

6

5-1/2 FH

7 (7-1/4,7-1/2)

4

6-5/8

4

6-15/16

7-1/8

6-5/8 FH

8 (8-1/4,8-1/2)

4

6-5/8

4-1/2

6-15/16

7-1/8

6-5/8 FH

8 (8-1/4,8-1/2)

4-1/2

6-5/8

5

6-15/16

7-1/8

6-5/8 FH

8 (8-1/4,8-1/2)

5

Standard   Features

API Bore Back   Box Connection

API Stress   Relief Grooved Pin

Cold Rolled   Thread Roots

Phosphate   coated connections

Options

Internal   Plastic Coating

Hardband Type   especially on box and pin tool joint

Proprietary   Connections

Make and Break   Test

Protection

Pressed steel   thread protectors

Mill Test   Certificates

Issued in   accordance with API Spec 7/7-1 and API RP7G .


Third Party   Inspection can be performed on request at buyer’s care and expense.

Heavy Weight Drill Pipe

HWDP Specifications

 

Conventional Heavy Weight Drill Pipes come in two configurations, Welded and Integral.

The welded configuration is manufactured by friction welding of extra-long tool joints to a thick well tube while the integral configuration is machined from a solid bar of AISI4145H alloy steel.

 

An additional option is the Heavyweight Spiral Drill Pipe, which has spiral grooves cut into the external surface for reduced differential sticking and improved hole-cleaning.

 

Contact us to discuss your requirements.


 

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




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