Casing pipe is a type of pipe used in Oil and gasdrilling operations. It is used to line the walls of a drilled wellbore, providing structuralintegrity and preventing the wellbore from collapsing. Casing pipe is typically made of steel, although other materials such as fiberglass and polyethylene can also be used.
a In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee method.
b No hardness limits are specified, but the maximum variation is restricted as a manufacturingcontrol in accordance with 7.8 and 7.9.
c For through-wall hardness tests of Grades L80 (all types), C90, T95 and C110, the requirements stated in HRC scale are for maximum mean hardness number.
The casing pipe is inserted into the wellbore and held in place by cement. The cement is pumped into the annular space between the casing and the wellbore, forming a Seal that prevents the wellbore from collapsing and keeps the drilling fluid from entering the surrounding rock formations. The casing also provides a pathway for the production of oil and gas from the well.
NPS
OD
WT
INCH
MM
SCH10
SCH20
SCH30
STD
SCH40
SCH60
XS
SCH80
SCH100
SCH120
SCH140
SCH160
1/2″
21.3
2.11
2.41
2.77
2.77
3.73
3.73
4.78
3/4″
26.7
2.11
2.41
2.87
2.87
3.91
3.91
5.56
1″
33.4
2.77
2.9
3.38
3.38
4.55
4.55
6.35
1.1/4″
42.2
2.77
2.97
3.56
3.56
4.85
4.85
6.35
1.1/2″
48.3
2.77
3.18
3.68
3.68
5.08
5.08
7.14
2″
60.3
2.77
3.18
3.91
3.91
5.54
5.54
8.74
2.1/2″
73
3.05
4.78
5.16
5.16
7.01
7.01
9.53
3″
88.9
3.05
4.78
5.49
5.49
7.62
7.62
11.13
3.1/2″
101.6
3.05
4.78
5.74
5.74
8.08
8.08
4″
114.3
3.05
4.78
6.02
6.02
8.56
8.56
11.13
13.49
5″
141.3
3.4
6.55
6.55
9.53
9.53
12.7
15.88
6″
168.3
3.4
7.11
7.11
10.97
10.97
14.27
18.26
8″
219.1
3.76
6.35
7.04
8.18
8.18
10.31
12.7
12.7
15.09
18.26
20.62
23.01
10″
273
4.19
6.35
7.8
9.27
9.27
12.7
12.7
15.09
18.26
21.44
25.4
28.58
12″
323.8
4.57
6.35
8.38
9.53
10.31
14.27
12.7
17.48
21.44
25.4
28.58
33.32
14″
355.6
6.35
7.92
9.53
9.53
11.13
15.09
12.7
19.05
23.83
27.79
31.75
35.71
16″
406.4
6.35
7.92
9.53
9.53
12.7
16.66
12.7
21.44
26.19
30.96
36.53
40.19
18″
457.2
6.35
7.92
11.13
9.53
14.27
19.05
12.7
23.83
39.36
34.93
39.67
45.24
20″
508
6.35
9.53
12.7
9.53
15.09
20.62
12.7
26.19
32.54
38.1
44.45
50.01
22″
558.8
6.35
9.53
12.7
9.53
22.23
12.7
28.58
34.93
41.28
47.63
53.98
24″
609.6
6.35
9.53
14.27
9.53
17.48
24.61
12.7
30.96
38.89
46.02
52.37
59.54
26″
660.4
7.92
12.7
9.53
12.7
28″
711.2
7.92
12.7
15.88
9.53
12.7
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Casing pipe is an essential component of any oil and gas drilling operation. It provides structural integrity and prevents the wellbore from collapsing, while also providing a pathway for the production of oil and gas.
