Drill Pipe

Introduction
Specification

Application: Used for oil well drilling, it is mainly used for the drilling process and after completion of borehole wall support, to ensure that the drilling process and the whole Wells after completion are normal runnings.

Applicable hard, very hard and medium soft rock formations.

Reliable quality, long service life, rare abnormal breakage during service life.

Good flushing effect to ensure high drilling rate.

Strict quality warranty and compensation rules.

API 5DP Drill Pipe

Standard:API SPEC 5D
Application:For well drilling
Outer Diameter:2 3/8"~5 1/2",60.3mm~139.7mm
Wall Thickness:0.28"~0.415",7.11mm~10.54mm
Size

Outer Diameter Norminal Weight Calculated Weight Grade Wall Thickness Upset Ends,for Weld-on Tool Joints Tool Joint Designation  
In mm lb/ft kg/m In mm  
2 3/8" 60.3 6.65 6.26 9.32 E.X.G.S 0.28 7.11 EU NC26  
2 7/8" 73 10.4 9.72 14.48 0.362 9.19 EU NC31  
3 1/2" 88.9 13.3 12.31 18.34 0.368 9.35 EU NC38  
3 1/2" 88.9 15.5 14.63 21.79 0.449 11.4 EU NC38,NC40  
4" 101.6 14 12.93 19.26 0.33 8.38 IU,EU NC40  
4 1/2" 114.3 16.6 14.98 22.31 0.337 8.56 EU,IEU NC46,NC50  
4 1/2" 114.3 20 18.69 27.84 0.43 10.92 EU NC50  
5" 127 19.5 17.93 26.71 0.362 9.19 IEU NC50  
5" 127 25.6 24.03 35.79 0.5 12.7 IEU NC50  
5 1/2" 139.7 21.9 19.81 29.51 0.361 9.17 IEU 51/2FH  
5 1/2" 139.7 24.7 22.54 22.57 0.415 10.54 IEU 51/2FH  
Note:
1.EU-External Upset,IEU-Internal&External Upset.
2.Threads of tool joint are right-hand or left-hand.
3.Threads are copper-plated phosphorulized.

Thread Parameter Tolerance 

Thread Parameter Tolerance

 

Name

 

Taper
mm/m

 

Pitch per in.
mm

 

Stand off
mm

 

2 7/8"-5"
Drill Pipe

 

Pin

 

+2.5

 

±0.038

 

(+0.254
-0.127)

 

Box

 

-2.5

 

±0.038

 

-0.254

 

Chemical Composition 

Chemical Composition
Grade Chemical Composition%
P≤ S≤
E-75 0.015 0.003
X-95 0.015 0.003
G-105 0.015 0.003
S-135 0.015 0.003
Tool Joint 0.015 0.003

Mechanical Properties

Mechanical Properties
Pipe Body Grade Yield Strength Tensile Strength   Elongation% Hardness Longitudinal charpy impact(J)
min max min min
Psi Mpa Psi Mpa Psi Mpa HB HRC Average Each
E-75 75000 517 105000 724 100000 689 625000A^0.2/U^0.9 / / 80 65
X-95 95000 655 125000 862 105000 724 / / 80 65
G-105 105000 724 135000 931 115000 793 / / 80 65
S-135 135000 931 165000 1138 145000 1000 / / 80 65
Weld Zone Tool Joint 120000 827.4 / / 140000 965.3 ≥13% ≥285 / 80 65
E-75 75000 517 / / 100000 689 / ≤37 40 27
X-95 88000 609 / / 103000 712 / ≤37 40 27
G-105 95000 655 / / 105000 724 / ≤37 40 27
S-135 105000 724 / / 115000 793 / ≤37 40 27

 

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