Drill Pipe, Heavy Weight Drill Pipe, Drill Collar
Size: 2-3/8"--6-5/8"
Standard: API 5DP
Grade: E75, G105, S135, SS-105, X95, X57, X75, X39
Length: Range 1, Range 2, Range 3
Drill pipe diameter
Drill pipe ID
Drill pipe weight
2-3/8 inch
1.815 inch
6.65 lb/ft
2-7/8 inch
2.151 inch
10.40 lb/ft
3-1/2 inch
2.764 inch, 2.602 inch
13.30 lb/ft, 15.50 lb/ft
4 inch
3.340 inch, 3.240 inch
14.00 lb/ft, 15.70 lb/ft
4-1/2 inch
3.826 inch, 3.640 inch
16.60 lb/ft, 20 lb/ft
5 inch
4.726 inch, 4.000 inch
19.50 lb/ft, 25.60 lb/ft
5-1/2 inch
4.778 inch, 4.670 inch
21.90 lb/ft, 24.70 lb/ft
6-5/8 inch
5.965 inch, 5.901 inch
25.20 lb/ft, 27.70 lb/ft
Upset of Drill Pipe
Internal Upset IU
External Upset EU
Internal-External Upset IEU
Thread/Connection Types of Drill Pipe
NC26, NC31, NC38, NC40, NC46, NC50, 5-1/2 FH, 6-5/8 FH
XT Connection of Drill Pipe
XT connections facilitate the use of larger drill pipe in a set hole size, such as 5⅞ in. drill pipe with XT 57 in an 8½ in. hole size.
X57, X75, X39
Mechanical properties of API drill pipe grades
Grade
Yield strength
Tensile strength
API
psi
N/mm2
min.
psi
N/mm2
max.
psi
N/mm2
min.
E-75
75 000
515
105 000
725
100 000
690
Spec. 5 DP
X-95
95 000
655
125 000
860
105 000
725
Spec. 5 DP
G-105
105 000
725
135 000
930
115 000
795
Spec. 5 DP
S-135
135 000
930
165 000
1 140
145 000
1 000
Spec. 5 DP
Mechanical properties of API tool joint grades
Yield strength
Yield strength
Tensile strength
Elongation
Box
psi
N/mm2
min.
psi
N/mm2
max
psi
N/mm2
min
in 2 inches
%
min
Hardness
Brinell
min
120 000
827
165 000
1138
140 000
965
13
285
Chemical composition requirements
Pipe body
Phosphorus
max. %
Sulfur
max. %
Pipe body grade E
0.030
0.020
Pipe body grades X, G and S
0.020
0.015
Tool joint
0.020
0.015
Details of manufacturing
Tool joints are inertia welded to the tubes with computer-monitored precision. Concentricity is carefully monitored and controlled, and the parameters of each weld are electronically recorded, and traceable to each joint.
After removal of weld flash, the weld area is austenitized, quenched, and tempered to achieve the required mechanical properties. Heat treat cycles for each weld are compared to specific parameters and recorded for traceability.
After all steps and machine marks are polished from the OD and ID area, hardness testing, ultrasonic testing, and wet magnetic particle inspections are used to verify the integrity of each weld zone.
Drill-pipe corrosion
Drill-pipe corrosion is a critical issue for any drilling operation, particularly under high-pressure, high-temperature downhole conditions. However, most laboratory studies have been conducted under ambient and static conditions, with only a few downhole studies based on flow loop showing inconsistent results. In this study, we proposed a novel simple method to simulate pipe corrosion/erosion in a reservoir-like environment under both the static and dynamic conditions and investigated the influences of wellbore conditions, including temperature, pressure and salinity of water-based drilling fluids, on the corrosion behaviour of the drill pipe. The results showed that the erosion effect of the drilling fluid (without drilled cuttings) was negligible. Furthermore, we found that the corrosion rate increased with an increase in the temperature, pressure and rotational speed; however, it decreased with an increase in the salinity. In addition, the proposed method can be used to simulate other complicated conditions.
Drill Pipe Dimensional Range and Performance Properties
Pipe Figures
Plant
NominalSize
NominalWeight
Wallthickness
InsideDiameter
Grade
Upset
TensileYield
TorsionalYield
InternalPressure
Collapse
in
lb/ft
in
in
lb
ft-lb
psi
psi
mm
kg/m
mm
mm
kN
Nm
bar
bar
3
2 3/8
60,3
6.65
9,34
0.280
7,11
1.815
46,13
E75
EU
138 214
615
6 250 8
474
15 474
1 067
15 599
1 075
6.65
9,34
0.280
7,11
1.815
46,13
Х95
EU
175 072
779
7 917 10
734
19 600
1 351
19 759
1 362
6.65
9,34
0.280
7,11
1.815
46,13
G105
EU
193 500
861
8 751 11
864
21 663
1 493
21 839
1 505
3
2 7/8
73,0
10.4
15,49
0.362
9,19
2.151
54,64
E75
EU
214 344
953
11 554
15 665
16 526
1 139
16 509
1 138
10.4
15,49
0.362
9,19
2.151
54,64
Х95
EU
271 503
1208
14 635
19 842
20 933
1 443
20 911
1 441
10.4
15,49
0.362
9,19
2.151
54,64
G105
EU
300 082
1335
16 176
21 932
23 137
1 595
23 112
1 593
10.4
15,49
0.362
9,19
2.151
54,64
S135
EU
385 820
1716
20 798
28 198
29 747
2 051
29 716
2 048
3
3 1/2
88,9
13.3
19,81
0.368
9,35
2.764
70,20
E75
EU
271 569
1208
18 551
25 152
13 800
951
14 113
973
13.3
19,81
0.368
9,35
2.764
70,20
Х95
EU
343 988
1530
23 498
31860
17 480
1 205
17 877
1 232
13.3
19,81
0.368
9,35
2.764
70,20
G105
EU
380 197
1691
25 972
35213
19 320
1 332
19 758
1 362
13.3
19,81
0.368
9,35
2.764
70,20
S135
EU
488 825
2174
33 392
45 273
24 840
1 712
25 404
1 751
15.5
23,09
0.449
11,4
2.602
66,10
E75
EU
322 775
1436
21 086
28 589
16 838
1 160
16 774
1 156
15.5
23,09
0.449
11,4
2.602
66,10
Х95
EU
408 848
1819
26 708
36 211
21 328
1 470
21 247
1 465
15.5
23,09
0.449
11,4
2.602
66,10
G105
EU
451 885
2010
29 520
40 023
23 573
1 625
23 484
1 619
15.5
23,09
0.449
11,4
2.602
66,10
S135
EU
580 995
2585
37 954
51 459
30 308
2 090
30 194
2 081
3
4
101,6
14.0
20,85
0.330
8,38
3.340
84,84
E75
IU
258 359
1269
23 288
31574
10 828
746
11 354
782
14.0
20,85
0.330
8,38
3.340
84,84
Х95
IU
361 454
1608
29 498
39 994
13 716
945
14 382
992
14.0
20,85
0.330
8,38
3.340
84,84
G105
IU
399 502
1777
32 603
44 204
15 159
1 045
15 896
1 096
Tool Joint Figures
Assembly
Connection
OutsideDiameter
InsideDiameter
TongLengthPin
TongLengthBox
TensileYield
TorsionalYield
Aprox. Weight
TorsionalRatio, pinto pipe
Make-uptorque
in
in
in
in
lb
ft-lb
lb/ft
ft-lb
mm
mm
mm
mm
kN
Nm
kg/m
Nm
NC26
3 3/8
85,725
1 3/4
27,15
7
177,8
8
203,2
313 681
1 395
6 875
9 321
6.99
10,41
1.10
4 125
5 593
NC26
3 3/8
85,725
1 3/4
27,15
7
177,8
8
203,2
313 681
1 395
6 875
9 321
7.11
10,59
0.87
4 125
5 593
NC26
3 3/8
85,725
1 3/4
27,15
7
177,8
8
203,2
313 681
1 395
6 875
9 321
7.11
1059
0.79
4 125
5 593
NC31
4 1/8
104,8
2 1/8
53,98
7
177,8
9
228,6
447 130
1 989
11 790
15 985
10.87
16,19
1.02
7 122
9 656
NC31
4 1/8
104,8
2
50,80
7
177,8
9
228,6
495 726
2 205
13 158
17 839
11.09
16,52
0.90
7 918
10 735
NC31
4 1/8
104,8
2
50,80
7
177,8
9
228,6
495 726
2 205
13 158
17 839
11.09
16,52
0.81
7 918
10 735
NC31
4 3/8
111,1
1 5/8
41,28
7
177,8
9
228,6
623 844
2 775
16 809
22 790
11.55
17,20
0.81
10 167
13 785
NC38
4 3/4
120,7
2 11/16
68,26
8
203,2
10 1/2
266,7
587 308
2 613
18 071
24 500
13.93
20,75
0.97
10 864
14 730
NC38
5
127,0
2 9/16
65,09
8
203,2
10 1/2
266,7
649 158
2 888
20 095
27 245
14.62
21,78
0.86
12 196
16 536
NC38
5
127,0
2 7/16
61,91
8
203,2
10 1/2
266,7
708 063
3 150
22 035
29 875
14.71
21,91
0.85
13 328
18 070
NC38
5
127,0
2 1/8
53,98
8
203,2
10 1/2
266,7
842 440
3 748
26 503
35 933
14.92
22,22
0.79
15 909
21 570
NC38
5
127,0
2 9/16
65,09
8
203,2
10 1/2
266,7
649 158
2 888
20 095
27 245
16.54
24,64
0.95
12 196
16 536
NC38
5
127,0
2 7/16
61,91
8
203,2
10 1/2
266,7
708 063
3 150
22 035
29 875
16.82
25,05
0.86
13 328
18 070
NC38
5
127,0
2 1/8
53,98
8
203,2
10 1/2
266,7
842 440
3 748
26 503
35 933
17.03
25,37
0.90
15 909
21 570
NC40
5 1/2
139,7
2 1/4
57,15
7
177,8
10
254,0
979 996
4 360
32 693
44 325
17.57
26,17
0.86
19 766
26 799
NC40
5 1/4
133,4
2 13/16
71,44
7
177,8
10
254,0
711 611
3 166
23 279
31 562
15.04
22,40
1.00
17 092
19 106
NC40
5 1/4
133,4
2 11/16
68,26
7
177,8
10
254,0
776 406
3 454
25 531
34 615
15.34
22,85
0.87
15 404
20 885
NC40
5 1/2
139,7
2 7/16
61,91
7
177,8
10
254,0
897 161
3 991
29 764
40 354
15.91
23,70
0.91
18 068
24 497
Pipe Figures
Plant
NominalSize
NominalWeight
Wallthickness
InsideDiameter
Grade
Upset
TensileYield
TorsionalYield
InternalPressure
Collapse
in
lb/ft
in
in
lb
ft-lb
psi
psi
mm
kg/m
mm
mm
kN
Nm
bar
bar
4
4 1/2
114,3
16.6
24,73
0.337
8,56
3.826
97,18
E75
IEU
330 558
1 470
30 807
41 774
9 829
678
10 392
717
16.6
24,73
0.337
8,56
3.826
97,18
X95
IEU
418 707
1 863
39 022
52 914
12 450
859
12 765
880
16.6
24,73
0.337
8,56
3.826
97,18
G105
IEU
462 781
2 059
43 130
58 484
13 761
949
13 825
953
16.6
24,73
0.337
8,56
3.826
97,18
S135
IEU
595 004
2 647
55 453
75 194
17 693
1 220
16 773
1157
20.00
29,79
0.430
10,92
3.64
92,46
E75
IEU
412 358
1 834
36 901
50 038
12 542
865
12 964
894
20.00
29,79
0.430
10,92
3.64
92,46
X95
IEU
522 320
2 323
46 741
63 381
15 886
1 096
16 421
1132
20.00
29,79
0.430
10,92
3.64
92,46
G105
IEU
577 301
2 568
51 661
70 052
17 558
1 211
18 149
1252
20.00
29,79
0.430
10,92
3.64
92,46
S135
IEU
742 244
3 302
66 421
90 067
2 2575
1 557
23 335
1609
4
5
127,0
19.50
29,05
0.362
9,19
4.276
108,62
E75
IEU
395 595
1 760
41 167
55 822
9 503
655
9 962
687
19.50
29,05
0.362
9,19
4.276
108,62
E75
IEU
395 595
1 760
41 167
55 822
9 503
655
9 962
687
19.50
29,05
0.362
9,19
4.276
108,62
X95
IEU
501 087
2 229
52 144
70 707
12 037
830
12 026
829
19.50
29,05
0.362
9,19
4.276
108,62
X95
IEU
501 087
2 229
52 144
70 707
12 037
830
12 026
829
19.50
29,05
0.362
9,19
4.276
108,62
G105
IEU
553 833
2 464
57 633
78 150
13 304
918
12 999
896
19.50
29,05
0.362
9,19
4.276
108,62
G105
IEU
553 833
2 464
57 633
78 150
13 304
918
12 999
896
19.50
29,05
0.362
9,19
4.276
108,62
S135
IEU
712 070
3 168
74 100
100 480
17 105
1180
15 672
1 081
19.50
29,05
0.362
9,19
4.276
108,62
S135
IEU
712 070
3 168
74 100
100 480
17 105
1180
15 672
1 081
25.60
38,13
0.50
12,70
4.000
101,60
E75
IEU
530 144
2 358
52 257
70 860
13 125
905
13 500
931
25.60
38,13
0.50
12,70
4.000
101,60
E75
IEU
530 144
2 358
52 257
70 860
13 125
905
13500
931
Tool Joint Figures
Assembly
Connection
OutsideDiameter
InsideDiameter
TongLengthPin
TongLengthBox
TensileYield
TorsionalYield
Aprox. Weight
TorsionalRatio, pinto pipe
Make-uptorque
in
in
in
in
lb
ft-lb
lb/ft
ft-lb
mm
mm
mm
mm
kN
Nm
kg/m
Nm
NC 46
6 1/4
158,8
3 1/4
82,55
7
177,8
10
254,0
901 164 4
009
33 228
45 057
18.37
27,35
1.09
20.396 27657
NC 46
6 1/4
158,8
3
76,20
7
177,8
10
254,0
1 048 426
4 664
38 998
52 881
18.79
27,98
1.01
20.396 27657
NC 46
6 1/4
158,8
3
76,20
7
177,8
10
254,0
1 048 426
4 664
38 998
52 881
18.79
27,98
0.91
23.795 32
266
NC 46
6 1/4
158,8
2 3/4
69,85
7
177,8
10 2
54,0
1 183 908
5 266
44 359
60 151
19.00
28,29
0.81
26.923 36
508
NC 46
6 1/4
158,75
3
76,20
7
177,8
10
254,0
1 048 426
4 664
38 998
52 881
22.09
32,89
1.07
23.795 32
266
NC 46
6 1/4
158,75
2 3/4
69,85
7
177,8
10
254,0
1 183 908
5 266
44 359
60 151
22.67
33,76
0.96
26.923 36
508
NC 46
6 1/4
158,75
2 1/2
63,50
7
177,8
10
254,0
1 307 608
5 817
49 297
66 847
22.86
34,03
0.96
29.778 40
379
NC 46
6 1/4
158,75
2 1/4
57,15
7
177,8
10
254,0
1 419 527
6 315
53 800
79 953
23.03
34,29
0.81
NC 50
6 5/8
168,28
3 3/4
95,25
7
177,8
10
254,0
939 095
4 177
37 269
50 537
20.85
31,05
0.92
22.836
30 966
51/2 FH
7
177,8
3 3/4
95,25
8
203,2
10
254,0
1 448 407
6 443
62 903
85 296
22.28
33,17
1.53
NC 50
6 5/8
168,28
3 1/2
88,90
7
177,8
10
254,0
1 109 920
4 937
44 456
60 282
21.45
31,94
0.86
27.076
36 715
51/2 FH
7
177,8
3 3/4
95,25
8
203,2
10
254,0
1 448 407
6 443
62 903
85 296
22.62
33,68
1.21
NC 50
6 5/8
168,28
3 1/4
82,55
7
177,8
10
254,0
1 268 963
5 645
51 217
69 450
21.93
32,65
0.89
31.025
42 070
51/2 FH
7
177,8
3 3/4
95,25
8
203,2
10
254,0
1 448 407
6 443
62 903
85 296
22.62
33,68
1.09
NC 50
6 5/8
168,28
2 3/4
69,85
7
177,8
10
254,0
1551706
6903
63 393
85 961
22.61
33,67
0.86
38.044
51 588
51/2 FH
7 1/4
184,15
3 1/2
88,90
8
203,2
10
254,0
1 619 231
7 203
72 213
97 921
23.48
34,96
0.98
43.490
58 972
NC 50
6 5/8
168,28
3 1/2
88,90
7
177,8
10
254,0
1 109 920
4 937
44 156
59 876
26.85
39,98
0.86
27.076
36 715
51/2 FH
7
177,8
3 1/2
88,90
8
203,2
10
254,0
1 619 231
7 203
62 903
85 296
28.27
42,09
1.21
37.742
51 178
Pipe Figures
Plant
NominalSize
NominalWeight
Wallthickness
InsideDiameter
Grade
Upset
TensileYield
TorsionalYield
InternalPressure
Collapse
in
lb/ft
in
in
lb
ft-lb
psi
psi
mm
kg/m
mm
mm
kN
Nm
bar
bar
4
5
127,0
25.60
38,13
0.50
12,70
4.000
101,60
X95
IEU
671 515
2 987
66 192
89 756
16 625
1 147
17 100
1179
25.60
38,13
0.50
12,70
4.000
101,60
X95
IEU
671 515
2 987
66 192
89 756
16 625
1 147
17 100
1179
25.60
38,13
0.50
12,70
4.000
101,60
G105
IEU
742 201
3 302
73 159
99 204
18 375
1 267
18 900
1303
25.60
38,13
0.50
12,70
4.000
101,60
G105
IEU
742 201
3 302
73 159
99 204
18 375
1 267
18 900
1303
25.60
38,13
0.50
12,70
4.000
101,60
S135
IEU
954 259
4 245
94 062
127 548
23 625
1 629
24 300
1676
4
5 1/2
139,7
21.90
32,62
0.361
9,17
4.778
121,36
E75
IEU
437 116
1 944
50 710
68 763
8 615
594
8 413
580
21.90
32,62
0.361
9,17
4.778
121,36
X95
IEU
553 681
2 463
64 233
87 100
10 912
753
10 019
691
21.90
32,62
0.361
9,17
4.778
121,36
G105
IEU
611 963
2 722
70 994
96 258
12 061
832
10 753
742
21.90
32,62
0.361
9,17
4.778
121,36
S135
IEU
786 809
3 500
91 278
123 773
15 507
1 069
12 679
874
24.70
36,79
0.415
10,54
4.670
118,62
E75
IEU
497 222
2 212
56 574
76 714
9 903
683
10 464
722
24.70
36,79
0.415
10,54
4.670
118,62
X95
IEU
629 814
2 802
71 660
97 171
12 544
865
12 933
892
24.70
36,79
0.415
10,54
4.670
118,62
G105
IEU
696 111
3 097
79 204
107 401
13 865
956
14 013
966
24.70
36,79
0.415
10,54
4.670
118,62
S135
IEU
894 999
3 981
101 833
138 086
17 826
1229
17 023
1 174
Tool Joint Figures
Assembly
Connection
OutsideDiameter
InsideDiameter
TongLengthPin
TongLengthBox
TensileYield
TorsionalYield
Aprox. Weight
TorsionalRatio, pinto pipe
Make-uptorque
in
in
in
in
lb
ft-lb
lb/ft
ft-lb
mm
mm
mm
mm
kN
Nm
kg/m
Nm
NC 50
6 5/8
168,28
3
76,20
7
177,8
10
254,0
1 416 225
6 300
57 534
78 016
27.87
41,50
0.86
34.680
47026
51/2 FH
7
177,8
3 1/2
88,90
8
203,2
10
254,0
1 619 231
7 203
62 903
85 296
28.59
42,57
0.95
37.742
51178
NC 50
6 5/8
168,28
2 3/4
69,85
7
177,8
10
254,0
1 619 231
7 203
63 393
85 961
28.32
42,17
0.87
38.044
51588
51/2 FH
7 1/4
184,15
3 1/2
88,90
8
203,2
10
254,0
1 551 706
6 903
72 213
97 921
29.16
43,42
0.99
43.490
58972
51/2 FH
7 1/4
184,15
3 1/4
82,55
8
203,2
10
254,0
1 778 274
7 910
78 716
106 739
29.43
43,82
0.83
47.230
64044
51/2 FH
7
177,8
4
101,60
8
203,2
10
254,0
1 265 802
5 631
55 687
75 512
23.77
35,39
1.11
33.560
45507
51/2 FH
7
177,8
3 3/4
95,25
8
203,2
10
254,0
1 448 407
6 443
62 903
85 296
24.53
36,53
0.98
37.742
51178
51/2 FH
7 1/4
184,15
3 1/2
88,9
8
203,2
10
254,0
1 619 231
7 203
72 213
97 921
25.38
37,79
1.02
43.490
58972
51/2 FH
7 1/2
190,50
3
76,20
8
203,2
10
254,0
1 925 536
8 566
86 765
117 653
26.50
39,46
0.96
52.302
70922
51/2 FH
7
177,8
4
101,60
8
203,2
10
254,0
1 265 802
5 631
55 687
75 512
26.33
39,21
0.99
33.560
45507
51/2 FH
7 1/4
184,15
3 1/2
88,9
8
203,2
10
254,0
1 619 231
7 203
72 213
97 921
27.85
41,47
1.01
43.490
58972
51/2 FH
7 1/4
184,15
3 1/2
88,9
8
203,2
10
254,0
1 619 231
7 203
72 213
97 921
27.85
41,47
0.92
43.490
58972
51/2 FH
7 1/2
190,50
3
76,20
8
203,2
10
254,0
1 925 536
8 566
86 765
117 653
27.77
41,35
0.86
52.302
70922