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Casings acc. to API 5CT

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Slotted casings + screen well

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Outside dia Wall thicknes Nominal weight of
threaded with coupling
Grade Type of thread
in mm inch mm lb/ft kg/m kg/ft
4 1/2 114,3 0,205
0,224
0,250
0,290
0,337
5,21
5,69
6,35
7,37
8,56
9,50
10,50
11,60
13,50
15,10
14,14
15,69
17,26
20,19
22,47
4,31
4,76
5,26
6,12
6,85
J,K
J,K
J,K,N,L,C,P
N,L,C,P
P
STC
STC, BTC
STC, LTC, BTC
LTC, BTC, *
LTC, BTC, *
5 127 0,220
0,253
0,296
0,362
5,59
6,43
7,52
9,19
11,50
13,00
15,00
18,00
17,11
19,35
22,32
26,79
5,22
5,90
6,80
8,16
J,K
J,K
J,K,N,L,C,P
N,L,C,P
STC
STC, LTC, BTC
STC, LTC, BTC, *
LTC, BTC, *
5 1/2 139,7 0,244
0,275
0,304
0,361
0,415
6,20
6,98
7,72
9,17
10,54
14,00
15,50
17,00
20,00
23,00
20,83
23,07
25,30
29,76
34,23
6,35
7,03
7,71
9,07
10,43
J,K
J,K
J,K,N,L,C,P
N,L,C,P
N,L,C,P
STC
STC, LTC, BTC, *
STC, LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
6 5/8 168.3 0,288
0,352
0,417
0,475
7,32
8,94
10,59
12,06
20,00
24,00
28,00
32,00
29,76
35,72
41,67
47,62
9,07
10,89
12,70
14,52
J,K
J,K,N,L,C,P
N,L,C,P
N,L,C,P
STC, LTC, BTC, *
STC, LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
7 177,8 0,272
0,317
0,362
0,408
0,453
0,498
6,91
8,05
9,19
10,36
11,51
12,65
20,00
23,00
26,00
29,00
32,00
35,00
29,76
34,23
38,69
43,16
47,62
52,09
9,07
10,43
11,79
13,15
14,52
15,88
J,K
N,L,J,K,C
J,K,N,L,C,P
N,L,C,P
N,L,C,P
N,L,C,P
STC
STC, LTC, BTC, *
STC, LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
7 5/8 193,7 0,300
0,328
0,375
0,430
0,500
7,62
8,33
9,52
10,92
12,70
24,00
26,40
29,70
33,70
39,00
35,72
39,29
44,20
50,12
58,04
10,89
11,98
13,47
15,29
17,69
J,K
J,K,N,L,C
N,L,C,P
N,L,C,P
N,L,C,P
STC
STC, LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
8 5/8 219,1 0,304
0,352
0,400
0,450
0,500
7,72
8,94
10,16
11,43
12,70
28,00
32,00
36,00
40,00
44,00
41,67
47,62
53,57
59,53
66,48
12,70
14,52
16,33
18,14
19,96
J,K
J,K
J,K,N,L,C
N,L,C,P
N,L,C,P
STC
STC, LTC, BTC, *
STC, LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
9 5/8 244,5 0,352
0,395
0,435
0,472
0,545
8,94
10,03
11,05
11,99
13,84
36,00
40,00
43,50
47,00
53,50
53,57
59,53
64,74
69,94
79,61
16,33
18,14
19,73
21,32
24,27
J,K
J,K,N,L,C
N,L,C,P
N,L,C,P
N,L,C,P
STC, LTC, BTC
STC, LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
LTC, BTC, *
10 3/4 273,1 0,350
0,350
0,400
0,450
0,495
8,89
8,89
10,16
11,43
12,57
40,50
40,50
45,50
51,00
55,50
60,27
60,27
67,71
75,89
82,59
18,37
18,37
20,64
23,13
25,17

H
J,K
J,K
J,K
N

STC
STC, BTC
STC, BTC
STC, BTC
STC, BTC
11 3/4 298,5 0,333
0,375
0,435
0,489
8,46
9,52
11,05
12,45
42,00
47,00
54,00
60,00
62,50
69,94
80,36
89,29
19,05
21,32
24,50
27,22
H
J,K
J,K
J,K
STC
STC, BTC
STC, BTC
STC, BTC
13 3/8 339,7 0,330
0,380
0,430
0,480
0,514
8,38
9,65
10,92
12,19
13,06
48,00
54,50
61,00
68,00
72,00
71,43
81,10
90,78
101,19
107,14
21,77
24,72
27,67
30,84
32,66
H
J,K
J,K
J,K
N
STC
STC, BTC
STC, BTC
STC, BTC
STC, BTC
16 406,4 0,438
0,495
11,13
12,57
75,00
84,00
111,7
125,1
  J/K55 STC, BTC, LTC
STC, BTC, LTC
20 508,0 0,438
0,500
0,635
11,13
12,70
16,13
94,00
106,50
133,00
140,0
158,6
198,1
  J/K55
J/K55
J/K55
STC, BTC, LTC
STC, BTC, LTC
STC, BTC, LTC
 

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