Tubing
Tubing is pipe used for the transportation of crude oil and natural gas from an oil or gas layer to the surface after drilling is complete. It is made to withstand the pressure generated from the extraction process. Tubing is manufactured in the same way as casing, except that an additional process known as "upsetting" is applied to thicken the pipes.
The tubing production processing is similar to the process of casing production.
Tubing pipes typically have diameters of 60.3 mm to 114.3 mm.
Parameters of tubing pipes.

|
规格Size |
重量代号 Linear Mass lb/ft |
外径 Outside diameter |
壁厚 Wall thickness |
端部加工形式 Type of end-finish |
|
钢级 Grade |
|
Nonupset T﹠C |
Ex-Upset T﹠C |
ln. |
mm |
ln. |
mm |
J-55 |
L-80 |
N-801类、Q类 |
C-90 |
T-95 |
P-110 |
|
2 3/8” |
4.00 |
-- |
2.375 |
60.33 |
0.167 |
4.24 |
PN |
PN |
PN |
PN |
PN |
-- |
|
4.60 |
4.70 |
2.375 |
60.33 |
0.190 |
4.83 |
PNU |
PNU |
PNU |
PNU |
PNU |
PNU |
|
5.80 |
5.95 |
2.375 |
60.33 |
0.254 |
6.45 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
6.60 |
-- |
2.375 |
60.33 |
0.295 |
7.49 |
-- |
P |
-- |
P |
P |
-- |
|
7.35 |
7.45 |
2.375 |
60.33 |
0.336 |
8.53 |
-- |
PU |
-- |
PU |
PU |
-- |
|
2 7/8” |
6.40 |
6.50 |
2.875 |
73.03 |
0.217 |
5.51 |
PUN |
PNU |
PNU |
PNU |
PNU |
PNU |
|
7.80 |
7.90 |
2.875 |
73.03 |
0.276 |
7.01 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
8.60 |
8.70 |
2.875 |
73.03 |
0.308 |
7.82 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
9.35 |
9.45 |
2.875 |
73.03 |
0.340 |
8.64 |
-- |
PU |
-- |
PU |
PU |
-- |
|
10.50 |
-- |
2.875 |
73.03 |
0.392 |
9.96 |
-- |
P |
-- |
P |
P |
-- |
|
11.50 |
-- |
2.875 |
73.03 |
0.440 |
11.18 |
-- |
P |
-- |
P |
P |
-- |
|
3 1/2” |
7.70 |
-- |
3.500 |
88.90 |
0.216 |
5.49 |
PN |
PN |
PN |
PN |
PN |
-- |
|
9.20 |
9.30 |
3.500 |
88.90 |
0.254 |
6.45 |
PNU |
PNU |
PNU |
PNU |
PNU |
PNU |
|
10.20 |
-- |
3.500 |
88.90 |
0.289 |
7.34 |
PN |
PN |
PN |
PN |
PN |
-- |
|
12.70 |
12.95 |
3.500 |
88.90 |
0.375 |
9.52 |
-- |
PNU |
PNU |
PNU |
PNU |
PNU |
|
14.30 |
-- |
3.500 |
88.90 |
0.430 |
10.92 |
-- |
P |
-- |
P |
P |
-- |
|
15.50 |
-- |
3.500 |
88.90 |
0.476 |
12.09 |
-- |
P |
-- |
P |
P |
-- |
|
17.00 |
-- |
3.500 |
88.90 |
0.530 |
13.46 |
-- |
P |
-- |
P |
P |
-- |
|
4” |
9.50 |
-- |
4.000 |
101.60 |
0.226 |
5.74 |
PN |
PN |
PN |
PN |
PN |
PU |
|
-- |
11.00 |
4.000 |
101.60 |
0.262 |
6.65 |
PU |
PU |
PU |
PU |
PU |
PU |
|
13.20 |
-- |
4.000 |
101.60 |
0.33. |
8.38 |
-- |
P |
-- |
P |
P |
-- |
|
16.10 |
-- |
4.000 |
101.60 |
0.415 |
10.54 |
-- |
P |
-- |
P |
P |
-- |
|
18.90 |
-- |
4.000 |
101.60 |
0.500 |
12.70 |
-- |
P |
-- |
P |
P |
-- |
|
22.20 |
-- |
4.000 |
101.60 |
0.610 |
15.49 |
-- |
P |
-- |
P |
P |
-- |
|
4 1/2” |
12.60 |
12.75 |
4.500 |
114.30 |
0.271 |
6.88 |
PNU |
PNU |
PNU |
PNU |
PNU |
-- |
|
15.20 |
-- |
4.500 |
114.30 |
0.337 |
8.56 |
-- |
P |
-- |
P |
P |
-- |
|
17.00 |
-- |
4.500 |
114.30 |
0.380 |
9.65 |
-- |
P |
-- |
P |
P |
-- |
|
18.90 |
-- |
4.500 |
114.30 |
0.43 |
10.92 |
-- |
P |
-- |
P |
P |
-- |
|
21.50 |
-- |
4.500 |
114.30 |
0.500 |
12.70 |
-- |
P |
-- |
P |
P |
-- |
|
23.70 |
-- |
4.500 |
114.30 |
0.560 |
14.22 |
-- |
P |
-- |
P |
P |
-- |
|
26.10 |
-- |
4.500 |
114.30 |
0.630 |
16.00 |
-- |
P |
-- |
P |
P |
-- |
|
Non-Upset T﹠C—不加厚带螺纹和接箍 Ex-Upset T﹠C—外加厚带螺纹和接箍 P—平端/Plain end N—不加厚带螺纹和接箍/Non-upset threaded and coupled U—外加厚带螺纹和接箍/External upset threaded and coupled |