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Drill Pipe

Pipe Type:Seamless (SMLS), Electric Resistance Welded (ERW)
Application:Casing serves as well sidewall
Tubing is used for extracting petroleum and natural gas from well;
Casing serves as wells of a well.
Specification:OD:60.3mm, 73mm, 88.9mm, 101.6mm, 114.3mm, 127mm, 139.7mm
WT:6.5mm to 12.7mm, or cutomized
LENGTH: R1, R2, R3
Standard:API、SPEC、5DP,D355,K55,P110,5CT,5DP,G105,J55,S355J2H
Grade:E75、X95、G105、S135 、X42,X52,X56,X60,X65,X70,PSL1,PSL2,API5L.GRA,B,C
Ends:Beveled, Square Cut
Surface:Anti-corrosion Water Based Paint
Packing:Protection Caps in Both Ends, Waterproof Paper Wrapped, Two Tags

Standard: API SPEC 5DP

Steel Grade: E75、X95、G105、S135  

OD Range : 60.3mm, 73mm, 88.9mm, 101.6mm, 114.3mm, 127mm, 139.7mm

Range of Thickness: 6.5mm to 12.7mm, or cutomized
Connection threads: NC26, NC31, NC38, NC40, NC46, NC50, 5 1/2FH.6 5/8FH.
Internal Upset: IU, EU, IEU
Length: R1, R2, R3


Sizes

D


normal weight


steel grade

 t


upset ends


tool joint designation

in

mm

in

mm

2 3/8

60.32

6.65

E,X,G

0.280

7.11

EU

NC26

2 7/8

73.02

10.40

E,X,G,S

0.362

9.19

EU

NC31

3 1/2

88.90

9.50

E

0.254

6.45

EU

NC38

13.30

E,X,G,S

0.368

9.35

EU

NC38

13.50

E,X,G

0.449

11.40

EU

NC38

S

0.449

11.40

EU

NC40

4

101.60

14.00

E,X,G,S

0.330

8.38

IU

NC40

E,X,G,S

0.330

8.38

EU

NC46

4 1/2

114.30

13.75

E

0.271

6.88

IU

NC46

13.75

E

0.271

6.88

EU

NC46

16.60

E,X,G,S

0.337

8..56

EU

NC50

20.00

E,X,G,S

0.430

10.92

EU

NC50

16.60

E,X,G,S

0.337

8.56

IEU

NC46

20.00

E,X,G,S

0.430

10.92

IEU

NC46

5

127.00

19.50

E,X,G,S

0.362

9.19

IEU

NC50

19.50

E,X,G,S

0.362

9.19

IEU

5 1/2 FH

25.60

E,X,G

0.500

12.70

IEU

NC50

25.60

E,X,G,S

0.500

12.70

IEU

5 1/2 FH

5 1/2

139.70

21.90

E,X,G,S

0.361

9.17

IEU

5 1/2 FH

24.70

E,X,G,S

0.415

10.54

IEU

5 1/2 FH

6 5/8

168.28

25.20

E,X,G,S

0.330

8.38

IEU

6 5/8 FH

27.70

E,X,G,S

0.362

9.19

IEU

6 5/8 FH

Note: EU— external upset; IU— internal upset; IEU—internal & external upset.

 


Dimension Tolerances


 Tolerance

D

Drill-pipe-body Outside Diameter

          Pipe body


D≤101.60mm±0.79mm

D≥114.30mm+1.0%, -0.5%D


Drill-pipe-body behind the Meu

D≥60.32~≤88.90mm+2.38%, -0.79%D

D>88.90~≤127.00mm+2.78mm, -0.75%D

D>127.00~≤168.28mm+3.18mm,-0.75%D

     Wall Thickness

0, -12.5%t

 

 

 


Chemical Composition, Mass Fraction(%)



steel grade

P (%)

S (%)


Pipe body

E

0.030

0.020

X, G, S

0.020

0.015

Tool Joint

0.020

0.015

 

Mechanical Properties


steel grade

 tensile properties

 (21℃±3℃)

Charpy V-notch longitudinal absorbed-energy (21℃±3℃)


yield strength (Mpa)


tensile strength

(Mpa)


elongation(%)

10*10


average(min)

10*7.5

average(min)

10*5

average(min)

min

max

min

E

517

724

689

 

54(47)

43(38)

30(26)

X

655

862

724

G

724

931

793

S

931

1138

1000

Remarks: k—constant, equal to 1944 (62500); A—cross-sectional area of tensile specimen, mm2(in2); Udp—specified minimum tensile strength, MPa(Ib/in2)


Completed-Drill-Pipe-Unit

DRILL PIPE

Drill pipe is one of the necessary components to any drilling rig designed to extract oil or other liquid materials from the ground. The drill pipe is not used for extraction. Instead, the hollow tubes pump drilling fluids downward to the bit and back out again as needed to reduce friction and heat buildup. Drill pipe transferred drilling torque to drill bit for drilling under the oil well. It bears complicated strength subject to pulling, loading, pressing, torsion and bending.

Application: Drill pipe is for exploration and development of oil and gas wells.

 

 


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