Heavy Weight Drill Pipe/HWDP for drilling tools/downhole tools

Model: API SPEC 7-1 drilling tools
Place of Origin: Shaanxi,China (Mainland)
Materia: Carbon Steel
Protector: Press steel thread
Outer Diameter: 60.3 - 139.7 mm
Technique: Hot Rolled
Usage: Coal mining / oil well
Processing Type: Forging,Seamless steel pipe
Certification: API
Length: R1~R3
Thickness: 7.11 - 12.7 mm
Size: 3 1/2"~6 5/8"

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Product Description

Payment & Shipping Terms Supply Capacity
Unit Price:1.0 USDProduction Capacity:300 pces per month
Trade Term:FOB,CFR,CIF,DDP,DAP,CIP,CPT,FCA,EXWPacking:Standard export...
Payment Terms:T/TDelivery Date:30 days
Min. Order:1 Piece/Pieces
Means of Transport:Ocean, Air, Land

Production description:

1) Standard: API Spec 7-1

2) Size: 3 1/2", 4 1/2", 5", 5 1/2"

3) Material : AISI 4145H, AISI 4340, AISI4145H Mod

 

The heavy Weight Drill Pipe (HWDP) was developed to provide a gradual transition from the drill collars to the drill pipe.

 

This HWDP helps to prevent stress concentration at the top of the drill collar. It also allow drilling at higher rpms, reducing torque and differential pressure sticking. The HWDP is intended primarily for directional drilling. As it bends easily, it simplifies directional control and minimizes connection fatigue problems common to high-angle or horizontal drilling.

 

The reduced number of pipe failures and increased drill-stem service also make HWDP appropriate for some straight-hole applications. Various combinations of HWDP, drill collars, and standard drill string can be created to meet the challenge of severe drilling conditions.

 

We can supply integral HWDP from 2-7/8" to 6-5/8". Also we can supply friction welded HWDP, which is assembled with AISI 1340 steel pipe and AISI 4145H or 4137H tool joints.


Mechanical properties of HWDP 


Heavy Weight Drill Pipe Specification


Nominal Size

Length
ft

Tube

Tool Joint




ID

Wall Thickness

End
Upset(B)

Connection
Size and Type

Tool
Joint OD

Tool Joint ID

Per foot
lb

Per Joint (31ft)kg

Make-torque(ft-lb)

2 7/8

31

1 1/2

0.688

2 15/16

NC26(2 3/8 IF)

3 3/8

1 1/2

18.31

261

3,800

3 1/2

31

2 1/16

0.719

3 7/8

NC38(3 1/2 IF)

4 3/4

2 1/16

27.14

390

11,500

3 1/2

31

2 1/4

0.625

3 7/8

NC38(3 1/2 IF)

4 3/4 4 7/8

2 1/4

24.88

360

11,500

4

31

2 9/16

0.719

4 3/16

NC40(4 FH)

5 1/4 4 7/8

2 9/16

31.51

455

14,600

4 1/2

31

2 3/4

0.875

4 11/16

NC46(4 IF)

6 1/4

2 3/4

43.31

621

22,500

5

31

3

1

5 1/8

NC50(4 1/2 IF)

6 5/8

3

52.34

750

30,000

5 1/2

31

3 1/4

1.125

5 11/16

5 1/2 FH

7 1/4

3 1/4

63.87

915

41,200

6 5/8

31

4 1/2

1.063

6 5/16

6 5/8 FH

8

4 1/2

74.62

1070

50,500

Quality control or assurance:
In order to keeping competition and developing, the basic is to improve any possible aspects such as company quality, we place an emphasis on elements includes controls, job management, defined and well managed processes, performance and integrity criteria and identification of records, on competence includes knowledge, skills, experience and qualifications, on soft elements includes personnel integrity, confidence, organizational culture, motivation, team spirit and quality relationship. 


Category: Drill Pipe/HWDP/Drill Collar

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