.

oilfield drill pipe

oilfield drill pipe

Drill pipe plays a decisive role in the process of drilling, it transfered the drilling torque to drill bit, inordertodrillingunder the well. When it is drilling,drill pipe has complicated load, at the same time it is subjected to stress such as pulling,pressing,torsion and bending, and drill pipe string itself is an elastic system, drilling fluid in the process of drilling and the vibration of the drilling string makes the drill pipe under a great load.

Drill Pipe Type:

E75、X95、G105、S135.

steel drill pipe supplier:Found Petroleum Equipment

Technical Parameters:

Specification

Nominal weight

Flat end weight

Outer diameter O.D.

Wall thickness

Steel grade

Upset end for weld-on drill pipe joint

lb/ft

kg/m

in

mm

in

(Ton)mm

2 3/8

E, X, G, S

EU

2 7/8

73

E, X, G, S

IU/EU

3 1/2

E

IU/EU

3 1/2

E, X, G, S

IU/EU

3 1/2

E

IU/EU

3 1/2

X, G, S

IU/EU

4

14

4

E, X, G, S

IU/EU

4 1/2

E

IU/EU

4 1/2

15

E, X, G, S

EU/IEU

4 1/2

20

E, X, G, S

EU/IEU

5

5

127

X, G, S

IU

5

5

127

E

IEU

5

5

127

X, G, S

EU/IEU

5

5

127

E

IEU

5

5

127

X, G, S

EU/IEU

5 1/2

E, X, G, S

IEU

5 1/2

E, X, G, S

IEU

6 5/8

E, X, G, S

IEU

6 5/8

E, X, G, S

IEU

Mechanical Property of Friction Welding Zone

Yield Strength

Tensile Strength

Elongation

Guided Bend

Impact Energy(Akv)

HRC

Item

MPa

MPa

%

J

Standard

Steel Grade

Tensile Test Piece:¢12.5; Impact specimen:10×10 Charpy -V、20℃

SY/T5561-92 Welding area Regulations

E-75

≥517

≥689

≥13

/

Average≥20Mini. value≥15

/

X-95

≥609

≥712

/

/

G-105

≥655

≥724

/

/

S-135

≥724

≥793

/

/

API Welding area Regulations

E-75

≥609

≥712

Bending plane cracks in any direction≤3.175mm

Average≥27Mini. value≥23

HAZ内HRC≤37

X-95

≥655

≥724

G-105

≥724

≥793

S-135

≥392778793

≥4211000

API Pipe Body Regulations

E-75

≥517≤724

≥689

/

Average≥54Mini. value≥47

/

X-95

≥655≤862

≥724

G-105

≥724≤931

≥793

S-135

≥931≤1138

≥1000

Welding Drill Pipe Parameters list (According to API standard)

Wall Thickness

Pipe Body Upsetting

Grade

Drill Pipe Length(m)

Joint O.D.

Thread Type

Weight

inch

mm

inch

mm

Range1

Range2

Range3

kg/m

2-3/8

EU

X、G

NC26

2-7/8

EU

X、G

NC31

2-7/8

EU

S

NC31

3-1/2

EU

G

NC38

3-1/2

EU

S

NC38

3-1/2

EU

G

NC38

3-1/2

EU

S

NC40

4

IU

G

NC40

4

IU

S

NC40

4

EU

X、G

NC46

4

EU

S

NC46

4-1/2

EU

X、G

NC50

4-1/2

EU

S

NC50

4-1/2

EU

X、G

NC50

4-1/2

EU

S

NC50

4-1/2

IEU

X、G

NC46

4-1/2

IEU

S

NC46

4-1/2

IEU

G

NC46

4-1/2

IEU

S

NC46

5

IEU

G

NC50

5

IEU

S

NC50

5

IEU

X、G

5 1/2FH

5

IEU

S

5 1/2FH

5

IEU

G

NC50

5

IEU

G

5 1/2FH

5

IEU

S

5 1/2FH

5-1/2

IEU

G

5 1/2FH

5-1/2

IEU

S

5 1/2FH

5-1/2

IEU

X、G

5 1/2FH

5-1/2

IEU

S

5 1/2FH

Note: 1. The IU EU IEU is internal upset,external upset and internal-external upset. 2.The thread has a right-handed left rotation and copper plating or phosphating 3. This table is used for steel drill pipe, and lower steel grade drill pipe can also be supplied

Drill pipe production advantage:

Using the current domestic and foreign advanced heat treatment technology of friction welding deformation, it has small heat affected zone, after welding the stress transition region is more easy to eliminate. Strictly implement the process evaluation of welding deformation heat treatment standard and optimized parameter, to ensure the welding quality is better, more stable and reliable.



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