Heavy-weight Drill Pipe
分类: Heavy-weight Drill Pipe  发布时间: 2011-06-05 12:11 

Heavy-weight Drill Pipe
Heavy-weight Drill Pipe

Heavy weight drill pipe was developed to provid a gradual transition from the heavy weight drill collars to the relatively light weight drill pipe. This intermediate weight pipe has a wall thickness of approximately, and it helps prevent stress concentration at the top of the drill collars. It also allows you to drill at higher pms, reducing torque and differential pressure sticking. It is intended primarily for directional drilling. Because 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 it appropriate for some straight hole applications.

Size Designation
Nominal
Calculated Weight Wpe
Grade
Wall Thickness
Upset Ends, for     Weld-on Tool Joins(see note)
in.
mm
Weight
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
2 7/8
73
10.4
9.72
14.48
E,X,G,S
0.362
9.19
EU IU
3 1/2
88.9
9.5
8.81
13.12
E
0.254
6.45
EU IU
3 1/2
88.9
13.3
12.31
18.34
E,X,G,S
0.368
9.35
EU IU
3 1/2
88.9
15.5
14.63
21.79
E
0.449
11.4
EU IU
3 1/2
88.9
15.5
14.63
21.79
X,G,S
0.449
11.4
EU IEU
4
101.6
14
12.93
19.26
E,X,G,S
0.33
8.38
EU IU
4 1/2
114.3
13.75
12.24
18.23
E
0.271
6.88
EU IU
4 1/2
114.3
16.6
14.98
22.31
E,X,G,S
0.337
8.56
EU IEU
4 1/2
114.3
20
18.69
27.84
E,X,G,S
0.43
10.92
EU IEU
5
127
16.25
14.87
22.15
X,G,S
0.296
7.52
IU
5
127
19.5
17.93
26.71
E
0.362
9.19
IEU
5
127
19.5
17.93
26.71
X,G,S
0.362
9.19
EU IEU
5
127
25.6
24.03
35.79
E
0.5
12.7
IEU
5
127
25.6
24.03
35.79
X,G,S
0.5
12.7
EU IEU
5 1/2
139.7
21.9
19.81
29.51
E,X,G,S
0.361
9.17
IEU
5 1/2
139.7
24.7
22.54
33.57
E,X,G,S
0.415
10.54
IEU

 

Range 
 Name
Drill Pipe
Range1
5.49   ~   6.71 m
Range2
8.23   ~   9.14 m
Range3
11.58   ~   13.72

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