Tool Joint
General Description
Each end of the pipe incorporates a tool joint, and is differentiated by the male threaded connection referred to as the "pin" and the female threaded connection which is referred to as the "box". They are pre-fabricated and welded onto the pipe. The tool joints provide high-strength, threaded connections. They are heat treated to a higher strength than the steel of the tube body in order to survive the rigors of drilling and numerous cycles of tightening and loosening of threads. Tool joints are specified by upset and thread type.
Upset
The upset (thread-end finish) refers to the
wall of the tool joint at the threaded connection. Drill pipe is offered with
an internal upset (IU), an external upset (EU), or an internal-external upset
(IEU).
IU - In an internal upset increased
thickness along the inside walls compensate for the metal removed in threading
with a uniform, straight outside wall.
EU - In an external upset the increased
thickness along the outside diameter of the tubing compensates for the metal
removed in threading with a straight bore.
IEU - In an internal-external upset
thickness is increased along both the inside and outside walls of the pipe to
compensate for the metal removed in threading.
Size and Weight
|
Pipe
|
Tool
Joint
|
|
Size
OD,
in.
|
Nominal
Weight,
lb/ft
|
Upset
Type
|
Grade
|
Wall
Thickness,
in.
|
ID,
in.
|
Connection
Type
|
OD,
in.
|
ID,
in.
|
Pin
Tong Space,
in.
|
Box
Tong Space,
in.
|
|
2-3/8
|
6.65
|
EU
|
E-75
|
0.280
|
1.815
|
NC26
|
3-3/8
|
1-3/4
|
7
|
8
|
|
X-95
|
0.280
|
1.815
|
NC26
|
3-3/8
|
1-3/4
|
7
|
8
|
|
G-105
|
0.280
|
1.815
|
NC26
|
3-3/8
|
1-3/4
|
7
|
8
|
|
S-135
|
0.280
|
1.815
|
NC26
|
3-5/8
|
1-3/4
|
7
|
8
|
|
2-7/8
|
10.40
|
EU
|
E-75
|
0.362
|
2.151
|
NC31
|
4-1/8
|
2-1/8
|
7
|
9
|
|
X-95
|
0.362
|
2.151
|
NC31
|
4-1/8
|
2
|
7
|
9
|
|
G-105
|
0.362
|
2.151
|
NC31
|
4-1/8
|
2
|
7
|
9
|
|
S-135
|
0.362
|
2.151
|
NC31
|
4-3/8
|
1-5/8
|
7
|
9
|
|
3-1/2
|
13.30
|
EU
|
E-75
|
0.368
|
2.764
|
NC38
|
4-3/4
|
2-11/16
|
8
|
10-1/2
|
|
X-95
|
0.368
|
2.764
|
NC38
|
5
|
2-9/16
|
8
|
10-1/2
|
|
G-105
|
0.368
|
2.764
|
NC38
|
5
|
2-7/16
|
8
|
10-1/2
|
|
S-135
|
0.368
|
2.764
|
NC38
|
5
|
2-1/8
|
8
|
10-1/2
|
|
15.50
|
EU
|
E-75
|
0.449
|
2.602
|
NC38
|
5
|
2-9/16
|
8
|
10-1/2
|
|
X-95
|
0.449
|
2.602
|
NC38
|
5
|
2-7/16
|
8
|
10-1/2
|
|
G-105
|
0.449
|
2.602
|
NC38
|
5
|
2-1/8
|
8
|
10-1/2
|
|
S-135
|
0.449
|
2.602
|
NC40
|
5-1/2
|
2-1/4
|
7
|
10
|
|
4
|
14.00
|
IU
|
E-75
|
0.330
|
3.340
|
NC40
|
5-1/4
|
2-13/16
|
7
|
10
|
|
X-95
|
0.330
|
3.340
|
NC40
|
5-1/4
|
2-11/16
|
7
|
10
|
|
G-105
|
0.330
|
3.340
|
NC40
|
5-1/2
|
2-7/16
|
7
|
10
|
|
S-135
|
0.330
|
3.340
|
NC40
|
5-1/2
|
2-7/16
|
7
|
10
|
|
EU
|
E-75
|
0.330
|
3.340
|
NC46
|
6
|
3-1/4
|
7
|
10
|
|
X-95
|
0.330
|
3.340
|
NC46
|
6
|
3-1/4
|
7
|
10
|
|
G-105
|
0.330
|
3.340
|
NC46
|
6
|
3-1/4
|
7
|
10
|
|
S-135
|
0.330
|
3.340
|
NC46
|
6
|
3
|
7
|
10
|
|
15.70
|
IU
|
E-75
|
0.380
|
3.240
|
NC40
|
5-1/4
|
2-11/16
|
7
|
10
|
|
X-95
|
0.380
|
3.240
|
NC40
|
5-1/4
|
2-7/16
|
7
|
10
|
|
G-105
|
0.380
|
3.240
|
NC40
|
5-1/2
|
2-7/16
|
7
|
10
|
|
S-135
|
0.380
|
3.240
|
NC40
|
5-1/2
|
2
|
7
|
10
|
|
EU
|
E-75
|
0.380
|
3.240
|
NC46
|
6
|
3-1/4
|
7
|
10
|
|
X-95
|
0.380
|
3.240
|
NC46
|
6
|
3-1/4
|
7
|
10
|
|
G-105
|
0.380
|
3.240
|
NC46
|
6
|
3-1/4
|
7
|
10
|
|
S-135
|
0.380
|
3.240
|
NC46
|
6
|
3
|
7
|
10
|
|
4-1/2
|
16.60
|
IEU
|
E-75
|
0.337
|
3.826
|
NC46
|
6-1/4
|
3
|
7
|
10
|
|
X-95
|
0.337
|
3.826
|
NC46
|
6-1/4
|
3-1/4
|
7
|
10
|
|
G-105
|
0.337
|
3.826
|
NC46
|
6-1/4
|
3
|
7
|
10
|
|
S-135
|
0.337
|
3.826
|
NC46
|
6-1/4
|
2-3/4
|
7
|
10
|
|
EU
|
E-75
|
0.337
|
3.826
|
NC50
|
6-5/8
|
3-3/4
|
7
|
10
|
|
X-95
|
0.337
|
3.826
|
NC50
|
6-5/8
|
3-3/4
|
7
|
10
|
|
G-105
|
0.337
|
3.826
|
NC50
|
6-5/8
|
3-3/4
|
7
|
10
|
|
S-135
|
0.337
|
3.826
|
NC50
|
6-5/8
|
3-1/2
|
7
|
10
|
|
20.00
|
IEU
|
E-75
|
0.430
|
3.640
|
NC46
|
6-1/4
|
3
|
7
|
10
|
|
X-95
|
0.430
|
3.640
|
NC46
|
6-1/4
|
2-3/4
|
7
|
10
|
|
G-105
|
0.430
|
3.640
|
NC46
|
6-1/4
|
2-1/2
|
7
|
10
|
|
S-135
|
0.430
|
3.640
|
NC46
|
6-1/4
|
2-1/4
|
7
|
10
|
|
EU
|
E-75
|
0.430
|
3.640
|
NC50
|
6-5/8
|
3-5/8
|
7
|
10
|
|
X-95
|
0.430
|
3.640
|
NC50
|
6-5/8
|
3-1/2
|
7
|
10
|
|
G-105
|
0.430
|
3.640
|
NC50
|
6-5/8
|
3-1/2
|
7
|
10
|
|
S-135
|
0.430
|
3.640
|
NC50
|
6-5/8
|
3
|
7
|
10
|
|
5
|
19.50
|
IEU
|
E-75
|
0.362
|
4.276
|
NC50
|
6-5/8
|
3-3/4
|
7
|
10
|
|
X-95
|
0.362
|
4.276
|
NC50
|
6-5/8
|
3-1/2
|
7
|
10
|
|
G-105
|
0.362
|
4.276
|
NC50
|
6-5/8
|
3-1/4
|
7
|
10
|
|
S-135
|
0.362
|
4.276
|
NC50
|
6-5/8
|
2-3/4
|
7
|
10
|
|
E-75
|
0.362
|
4.276
|
5-1/2
FH
|
7
|
3-3/4
|
8
|
10
|
|
X-95
|
0.362
|
4.276
|
5-1/2
FH
|
7
|
3-3/4
|
8
|
10
|
|
G-105
|
0.362
|
4.276
|
5-1/2
FH
|
7
|
3-3/4
|
8
|
10
|
|
S-135
|
0.362
|
4.276
|
5-1/2
FH
|
7-1/4
|
3-1/2
|
8
|
10
|
|
25.60
|
IEU
|
E-75
|
0.500
|
4.000
|
NC50
|
6-5/8
|
3-1/2
|
7
|
10
|
|
X-95
|
0.500
|
4.000
|
NC50
|
6-5/8
|
3
|
7
|
10
|
|
G-105
|
0.500
|
4.000
|
NC50
|
6-5/8
|
2-3/4
|
7
|
10
|
|
S-135
|
0.500
|
4.000
|
NC50
|
6-5/8
|
2-3/4
|
7
|
10
|
|
E-75
|
0.500
|
4.000
|
5-1/2
FH
|
7
|
3-1/2
|
8
|
10
|
|
X-95
|
0.500
|
4.000
|
5-1/2
FH
|
7
|
3-1/2
|
8
|
10
|
|
G-105
|
0.500
|
4.000
|
5-1/2
FH
|
7-1/4
|
3-1/2
|
8
|
10
|
|
S-135
|
0.500
|
4.000
|
5-1/2
FH
|
7-1/4
|
3-1/4
|
8
|
10
|
|
5-1/2
|
21.90
|
IEU
|
E-75
|
0.361
|
4.778
|
5-1/2
FH
|
7
|
4
|
8
|
10
|
|
X-95
|
0.361
|
4.778
|
5-1/2
FH
|
7
|
3-3/4
|
8
|
10
|
|
G-105
|
0.361
|
4.778
|
5-1/2
FH
|
7-1/4
|
3-1/2
|
8
|
10
|
|
S-135
|
0.361
|
4.778
|
5-1/2
FH
|
7-1/2
|
3
|
8
|
10
|
|
24.70
|
IEU
|
E-75
|
0.415
|
4.670
|
5-1/2
FH
|
7
|
4
|
8
|
10
|
|
X-95
|
0.415
|
4.670
|
5-1/2
FH
|
7-1/4
|
3-1/2
|
8
|
10
|
|
G-105
|
0.415
|
4.670
|
5-1/2
FH
|
7-1/4
|
3-1/2
|
8
|
10
|
|
S-135
|
0.415
|
4.670
|
5-1/2
FH
|
7-1/2
|
3
|
8
|
10
|
|
6-5/8
|
25.20
|
IEU
|
E-75
|
0.330
|
5.965
|
6-5/8
FH
|
8
|
5
|
8
|
11
|
|
X-95
|
0.330
|
5.965
|
6-5/8
FH
|
8
|
5
|
8
|
11
|
|
G-105
|
0.330
|
5.965
|
6-5/8
FH
|
8-1/4
|
4-3/4
|
8
|
11
|
|
S-135
|
0.330
|
5.965
|
6-5/8
FH
|
8-1/2
|
4-1/4
|
8
|
11
|
|
27.70
|
IEU
|
E-75
|
0.362
|
5.901
|
6-5/8
FH
|
8
|
5
|
8
|
11
|
|
X-95
|
0.362
|
5.901
|
6-5/8
FH
|
8-1/4
|
4-3/4
|
8
|
11
|
|
G-105
|
0.362
|
5.901
|
6-5/8
FH
|
8-1/4
|
4-3/4
|
8
|
11
|
|
S-135
|
0.362
|
5.901
|
6-5/8
FH
|
8-1/2
|
4-1/4
|
8
|
11
|
