CHINA SCOTON OILFIELD EQUIPMENT CO., LTD.

Heavy Weight Drill Pipe

Heavy Weight Drill Pipe (HWDP) is an intermediate weight drill stem component which is used in conjunction with the drill pipe and drill collars. SCOTON's HWDP is available in standard, spiral and non-magnetic designs. In some applications, heavy-weight also can be used instead of the drill collars. Now the integral heavy weight drill pipe is becoming more and more important in oilfield.

SCOTON heavy Weight Drill Pipe has been awarded by the NS-1 certification which is made from one-piece 4145H modified quenched and tempered steel. It is designed for tough drilling environments in vertical and directional wells; for vertical wells, SCOTON's spiral heavy weight drill pipe is a transition member; for directional holes it is a weight member and provides additional stiffness to prevent buckling.

Features and Benefits of Heavy Weight Drill Pipe

  • A center upset or wear pad to increase tube life, reduce hole rag and differential sticking problems;
  • Connections are completed(phosphate coated) to protect them from the elements after machining and to help prevent galling upon initial make-up;
  • Thread roots are cold rolled on API and H-90 connections. And press steel thread protectors are supplied for standard connections;
  • Hardbanding and Internal Coating can be provided on customer's request.

Specifications of Heavy Weight Drill Pipe

Size
(in)

Product
Code

O.D.

(in)

I.D.

(in)

Tool
Joint
O.D.(in)

Tool
Joint
I.D.(in)

Connection

Max.elevator
diameter

(in)

Central
upset
dia.
(in)

Mid.drift dia.
size (in)


3 1/2

SCO07-03000

3 1/2

2 1/4

4 3/4

(4 7/8,5)

2 1/4

NC38

3 7/8

4

2

SCO07-03001

2 1/16

2 1/16

1 13/16

4

SCO07-04000

4

2 1/2

5 1/4

2 1/2

NC40

4 3/16

4 1/2

2 1/4

SCO07-04001

2 9/16

2 9/16

2 5/16

5

SCO07-05000

4 1/2

2 11/16

6 1/4

2 11/16

NC46

4 11/16

5

2 7/16

SCO07-05001

2 3/4

2 3/4

2 1/2

SCO07-05002

2 13/16

2 13/16

2 9/16

6

SCO07-06000

5

3

6 5/8

3

NC50

5 1/8

5 1/2

2 3/4

5 1/2

SCO07-07000

5 1/2

3 1/4

7

(7 1/4, 7 1/2)

3 1/4

5 1/2 FH

5 11/16

6

3

SCO07-07001

3 3/8

3 3/8

3 1/8

SCO07-07002

3 7/8

3 7/8

3 5/8

SCO07-07003

4

4

3 3/4

6 5/8

SCO07-08000

6 5/8

4

8

(8 1/4,8 1/2)

4

6 5/8 FH

6 15/16

7 1/8

3 3/4

SCO07-08001

4 1/2

4 1/2

4 1/4

SCO07-08002


5

4 3/4

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