API 5CT Oil Casing Suppliers

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 API 5CT Oil casing Suppliers  

As We are professional Oil Casing Pipe manufacturers and Oil Casing Suppliers in China, We have a professional team at your service. You can get samples for free. Competitive price and fast delivery are available.

Oil casing is the lifeline to maintain oil well operation. Due to the different geological conditions and the complex state of the downhole force, the combined effects of tensile, compressive, bending, and torsional stresses act on the pipe body, which places higher requirements on the quality of the casing itself.

Once the casing itself is damaged for some reason, it may lead to reduced production of the whole well or even scrap. Therefore, we must be careful when selecting products and suppliers. Our products are produced strictly in accordance with API 5CT standards and can accept any third party inspection such as SGS VB.

Different types of casings used in oil production:

Surface oil casings protect wells from contamination by shallow water and shallow gas, support wellhead equipment and maintain the Weight of other layers of casing. Industrial oil casing can separate pressure at different levels, so that drilling fluid can flow normally and protect production casing. In order to install explosion-proof devices, leak-proof devices and tail pipes in the boreholes. Reservoir casing directs oil and gas from reservoirs below the surface. It is used to protect drilling and layered drilling mud.

When producing oil casing, the outer diameter is usually 114.3 mm to 508 mm.

casing can be divided into:

conduit, surface casing, technical casing and oil casing.

Standard: API 5CT

Materials Grade:

J55, K55, N80-1, N80-Q, L80-1,L80-9Cr, L80-13Cr, P110, Q125 etc

Size:

4-1/2″, 5″, 5-1/2″, 6-5/8″, 7″, 7-5/8″, 9-5/8″, 10-3/4″, 13-3/8″, 16″, 18-5/8″, 20″ for Casing

Length:

R1(4.88-7.62m), R2(7.62-10.36m), R3(10.36-14.63m)

Thread type:

NUE, EUE, STC, LTC, BTC, XC, TOP,HYDRILL CS

Sizes OD
D
mm
Weight
kg/m
WT
t
mm
Type of end
H40 J55
K55
M65 L80
C95
N80
1、Q
C90
T95
P110 Q125
1 2
1 2 3 4 5 6 7 8 9 10 11 12 13
4-1/2
4-1/2
4-1/2
4-1/2
4-1/2
9.50
10.50
11.60
13.50
15.10
114.30
114.30
114.30
114.30
114.30
14.14
15.63
17.26
20.09
22.47
5.21
5.69
6.35
7.37
8.56
PS



PS
PSB
PSLB

PS
PSB
PLB
PLB


PLB
PLB


PLB
PLB


PLB
PLB


PLB
PLB
PLB




PLB
5
5
5
5
5
5
5
11.50
13.00
15.00
18.00
21.40
23.20
24.10
127.00
127.00
127.00
127.00
127.00
127.00
127.00
17.11
19.35
22.32
26.79
31.85
34.53
35.86
5.59
6.43
7.52
9.19
11.10
12.14
12.70






PS
PSLB
PSLBE



PS
PSLB
PLB
PLB
PLB



PLBE
PLBE
PLB
PLB
PLB


PLBE
PLBE
PLB
PLB
PLB


PLBE
PLBE
PLB
PLB
PLB


PLBE
PLBE
PLB
PLB
PLB



PLBE
PLB
PLB
PLB
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
5-1/2
14.00
15.50
17.00
20.00
23.00
26.80
29.70
32.60
35.30
38.00
40.50
43.10
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
139.70
20.83
23.07
25.30
29.76
34.23
39.88
44.20
48.51
52.53
56.55
60.27
64.14
6.20
6.98
7.72
9.17
10.54
12.70
14.27
15.88
17.45
19.05
20.62
22.22
PS










PS
PSLBE
PSLBE








PS
PSLB
PLB
PLB
PLB








PLBE
PLBE
PLBE








PLBE
PLBE
PLBE








PLBE
PLBE
PLBE
P
P
P
P
P
P
P


PLBE
PLBE
PLBE










PLBE






6-5/8
6-5/8
6-5/8
6-5/8
20.00
24.00
28.00
32.00
168.28
168.28
168.28
168.28
29.76
35.72
41.67
47.62
7.32
8.94
10.59
12.06
PS


PSLB
PSLBE

PSLB
PLB
PLB

PLBE
PLBE
PLBE

PLBE
PLBE
PLBE

PLBE
PLBE
PLBE

PLBE
PLBE
PLBE



PLBE
7
7
7
7
7
7
7
17.00
20.00
23.00
26.00
29.00
32.00
35.00
177.80
177.80
177.80
177.80
177.80
177.80
177.80
25.30
29.76
34.23
38.69
43.16
47.62
52.09
5.87
6.91
8.05
9.19
10.36
11.51
12.65
PS
PS





PS
PSLBE
PSLBE



PS
PLB
PLB
PLB
PLB


PLBE
PLBE
PLBE
PLBE
PLBE


PLBE
PLBE
PLBE
PLBE
PLBE


PLBE
PLBE
PLBE
PLBE
PLBE



PLBE
PLBE
PLBE
PLBE






PLBE
7
7
7
7
7
7
38.00
42.70
46.40
50.10
53.60
57.10
177.80
177.80
177.80
177.80
177.80
177.80
56.55
63.54
69.05
74.56
79.77
84.97
13.72
15.88
17.45
19.05
20.62
22.22















PLBE




PLBE




PLBE
P
P
P
P
P
PLBE




PLBE




7-5/8
7-5/8
7-5/8
7-5/8
7-5/8
7-5/8
7-5/8
7-5/8
7-5/8
7-5/8
24.00
26.40
29.70
33.70
39.00
42.80
45.30
47.10
51.20
55.30
193.68
193.68
193.68
193.68
193.68
193.68
193.68
193.68
193.68
193.68
35.72
39.29
44.20
50.15
58.04
63.69
67.41
70.09
76.19
82.30
7.62
8.33
9.52
10.92
12.70
14.27
15.11
15.88
17.45
19.05
PS









PSLBE








PSLB
PLB
PLB






PLBE
PLBE
PLBE
PLBE
PLB
PLB
PLB


PLBE
PLBE
PLBE
PLBE
PLB
PLB
PLB


PLBE
PLBE
PLBE
PLBE
PLB
PLB
PLB
P
P


PLBE
PLBE
PLBE
PLB
PLB
PLB





PLBE
PLB
PLB
PLB

7-3/4 46.10 196.85 68.60 15.11 P P P P P
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
8-5/8
24.00
28.00
32.00
36.00
40.00
44.00
49.00
219.08
219.08
219.08
219.08
219.08
219.08
219.08
35.72
41.67
47.62
53.57
59.53
65.48
72.92
6.71
7.72
8.94
10.16
11.43
12.70
14.15

PS
PS



PS

PSLBE
PSLBE


PS
PS
PSLB
PSLB
PLB




PLBE
PLBE
PLBE
PLBE



PLBE
PLBE
PLBE
PLBE



PLBE
PLBE
PLBE
PLBE




PLBE
PLBE
PLBE




– PLBE
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
9-5/8
32.30
36.00
40.00
43.50
47.00
53.50
58.40
59.40
64.90
70.30
75.60
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
244.48
48.07
53.57
59.53
64.73
69.94
79.62
86.91
88.40
96.58
104.62
112.50
7.92
8.94
10.03
11.05
11.99
13.84
15.11
15.47
17.07
18.64
20.24
PS
PS









PSLB
PSLBE








PSLB
PSLB
PLB
PLB


– –


PLBE
PLBE
PLBE
PLBE
PLB





PLBE
PLBE
PLBE
PLBE
PLB





PLBE
PLBE
PLBE
PLBE
PLB
P
P
P
P



PLBE
PLBE
PLBE
PLB







PLBE
PLBE
PLB



10-3/4
10-3/4
10-3/4
10-3/4
10-3/4
10-3/4
10-3/4
32.75
40.50
45.50
51.00
55.50
60.70
65.70
273.05
273.05
273.05
273.05
273.05
273.05
273.05
48.74
60.27
67.71
75.90
82.59
90.33
97.77
7.09
8.89
10.16
11.43
12.57
13.84
15.11
PS
PS





PSB
PSBE
PSBE



PSB
PSB
PSB
PSB




PSBE
PSBE




PSBE
PSBE




PSBE
PSBE
PSBE
PSB



PSBE
PSBE
PSBE
PSB





PSBE
PSB
10-3/4
10-3/4
10-3/4
73.20
79.20
85.30
273.05
273.05
273.05
108.93
117.86
126.94
17.07
18.64
20.24










P
P
P




11-3/4
11-3/4
11-3/4
11-3/4
11-3/4
11-3/4
42.00
47.00
54.00
60.00
65.00
71.00
298.45
298.45
298.45
298.45
298.45
298.45
62.50
69.94
80.36
89.29
96.73
105.66
8.46
9.53
11.05
12.42
13.56
14.78
PS





PSB
PSB
PSB


PSB
PSB
PSB




PSB
P
P



PSB
P
P



PSB
P
P



PSB
P
P



PSB
P
P
13-3/8
13-3/8
13-3/8
13-3/8
13-3/8
48.00
54.50
61.00
68.00
72.00
339.72
339.72
339.72
339.72
339.72
71.43
81.10
90.78
101.19
107.15
8.38
9.65
10.92
12.19
13.06
PS




PSB
PSB
PSB

PSB
PSB
PSB



PSB
PSB



PSB
PSB



PSB
PSB



PSB
PSB




PSB
16
16
16
16
65.00
75.00
84.00
109.00
406.40
406.40
406.40
406.40
96.73
111.61
125.01
162.21
9.53
11.13
12.57
16.66
PS



PSB
PSB
P

PSB
PSB



P



P






P



P
18-5/8 87.50 473.08 130.21 11.05 PS PSB PSB
20
20
20
94.00
106.50
133.00
508.00
508.00
508.00
139.89
158.49
197.93
11.13
12.70
16.13
PSL

PSLB
PSLB
PSLB
PSLB
PSLB










Remarks: P——Plain end;S—Short round thread;L—Long round thread;B—Buttress thread;E—Extreme-line.

Casing Tubing steel color code

Name J55 K55 N80-1 N80-Q L80-1 P110
Casing a bright green band two bright green bands a bright red band a bright red band + a green band a red band + a brown band a bright white band
Coupling entire green coupling + a white band entire green coupling entire red coupling entire red coupling + a green band entire red coupling + a brown band entire white coupling