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Drill Pipe

Standards and technical conditions for supply:API SPEC 5DP
Uses: For well drilling
Dimension:

Size designation

Calculated weight

Tool joint designation

Calculated weight

grade

Wall thickness

Upset ends

in

1b/ft

Kg/m

in

mm

2 3/8

6.65

NC26

6.26

9.32

E.X.G.S

0.28

7.11

EU

2 7/8

10.4

NC31

9.72

14.48

E.X.G.S

0.362

9.19

EU

3 1/2

13.3

NC38

12.31

18.34

E.X.G.S

0.368

9.35

EU

3 1/2

15.5

NC38,NC40

14.63

21.79

E.X.G.S

0.449

11.4

EU

4

14

NC40,NC46

12.93

19.26

E.X.G.S

0.33

8.38

IU,EU

4 1/2

16.6

NC46,NC50

14.98

22.31

E.X.G.S

0.337

8.56

EU,IEU

4 1/2

20

NC46,NC50

18.69

27.84

E.X.G.S

0.43

10.92

EU,IEU

5

19.5

NC50,NC52

17.93

26.71

E.X.G.S

0.362

9.19

IEU

5

25.6

NC50,5 1/2FH

24.03

35.79

E.X.G.S

0.5

12.7

IEU

5 1/2

21.9

5 1/2FH

19.81

29.51

E.X.G.S

0.361

9.17

IEU

5 1/2

24.7

5 1/2FH

22.54

33.57

E.X.G.S

0.415

10.54

IEU

6 5/8

25.2

6 5/8FH

22.19

33

E.X.G.S

0.33

8.387

IEU

6 5/8

27.7

6 5/8FH

24.21

41

E.X.G.S

0.362

9.19

IEU

 

Chemical Composition(%):

Grade

Chemical composition

P

S

E75

<0.015

<0.003

X95

<0.015

<0.003

G105

<0.015

<0.003

S135

<0.015

<0.003

Tool joint

<0.015

<0.003


Mechanical Properties:

Pipe body

Grade

Yield strength

Tensile strength

Elongation

Hardness

Full size charpy impact test(J)

min

max

min

min

Psi

MPa

Psi

MPa

Psi

MPa

HBW

HRC

Average

Single

E75

75000

517

105000

724

100000

689

625000A0.2/U0.9

-

-

80

65

X95

95000

655

125000

862

105000

724

-

-

80

65

G105

105000

724

135000

931

115000

793

-

-

80

65

S135

135000

931

165000

1138

145000

1000

-

-

80

65

Weld zone

Tool joint

120000

827.4

-

-

140000

965.3

=13%

=285

-

80

65

E75

75000

517

-

-

100000

689

-

37

40

27

X95

88000

609

-

-

103000

712

-

37

40

27

G105

95000

655

-

-

105000

724

-

37

40

27

S135

105000

724

-

-

115000

37

40

27

Drill Collars are integral heavy-wall joints that are manufactured from a solid bar of modified alloy steel. The solid bars are quenched and tempered to obtain the required mechanical properties, then trepanned, drifted and threaded. Drill collars are furnished as slick or spiraled in 30 or 31 foot lengths.


Slick drill collars are supplied with the mill as-rolled surface finish. Spiraled drill collars have grooves machined in the outside surface. The spiral grooves promote even flow of drilling fluid around the collar diameter, equalizing pressure and reducing the occurrence of differential sticking.


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