Oil casing, API 5CT casing,API Spec 5CT J55 K55 N80 L80 Seamless Steel Oil Well Casing Pipe

Description

Pipe Type:Oil casing, API 5CT casing,API Spec 5CT J55 K55 N80 L80 Casing Pipe;Seamless Steel Oil Well Casing Pipe

Outer diamater(OD):114.30mm-508mm

Wall thickness(WT):5.21mm-16.13mm

Length:R1; R2; R3

Gread：J55;K55;N80-Q;L80-1;L80-9Cr;L80-13Cr,C95，P10

Standard: API 5CT PSL1/PSL2 J55,K55,N80-1,N80-Q,
API 5CT PSL1/PSL2 L80-1, L80-9Cr,L80-13Cr,C90, C95, P110, Q125

Thread types: STC;LTC;BTC;VAM TOP equivalent;New VAM equivalent;CS equivalent;HSC equivalent;NUE;EUE;LTC;XC

Thread: NUE, EUE, VAM, STC, LTC, BTC, XC, VAM TOP, NEW VAM,HYDRILL CS

Application: Casing Pipe is widely used for fastening oil and gas well wall or borehold, with bigger diameter than tubing, including surface casings, technical casings and oil layer casings.

Production technology: Plain pipe-end upsetting- Austenite treatment-Quenching-Tempering-straightening-(Non-Destructive Testing)- Threading-Thread inspection-coupling MPI-phosphating-Coupling make up-Drifting-Hydrostatic testing-Measuring&Weight-Marking&Stenciling-Coating-Packing Casing and tubing-Transportation

vailable Sizes

Category: ERW, HFW or SMLS

Standards:H-40, J-55, K-55, C-75, L-80, N-80, C-95, AS-95, P-110, L80-13CR

Steel Grade: H40, J55, K55, N80

Connections

API 5CT is applicable to following connections which complied with API SPEC 5B:

• SC: Short round thread casing

• LC: Long ound thread casing

• BC: Buttress thread casing

• NU: Non-upset tubing

• EU: External upset tubing

Specification

Technical parameters of casing pipe:

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

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

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
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

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

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
P
P
P
P
P

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
P
P

–
–
PLBE
PLBE
PLBE
PLB
PLB
PLB
–
–

–
–
–
–
PLBE
PLB
PLB
PLB
–
–

7-3/4

46.10

196.85

68.60

15.11

–

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

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
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
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
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

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

18-5/8

87.50

473.08

130.21

11.05

PS

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.

Note: other premium connection shall be provided as per customer requirements.

Chemical compositions of casing pipe

Chemical compositions of casing pipe
Standard	Grade	Chemical compositions(%)
API SPEC 5CT	J55	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
	K55	0.34~0.39	0.20~0.35	1.25~1.50	≤0.020	≤0.015	≤0.15	≤0.20	≤0.20	/	/
	N80	0.34~0.38	0.20~0.35	1.45~1.70	≤0.020	≤0.015	≤0.15	/	/	/	0.11~0.16
	L80	0.15~0.22	≤1.00	0.25~1.00	≤0.020	≤0.010	12.0~14.0	≤0.20	≤0.20	/	/
	P110	0.26~0.395	0.17~0.37	0.40~0.70	≤0.020	≤0.010	0.80~1.10	≤0.20	≤0.20	0.15~0.25	≤0.08

Mechanical properties of casing pipe

Mechanical properties of casing pipe
Grade	Type	Total elongation	Yield strength	Yield strength	Tensile strength	Hardness	Hardness
		under load	(min)Mpa	(max)Mpa	min Mpa	Max (HRC)	Max (HBW)
		(%)
J55	-	0.5	379	552	517	-	-
K55	-	0.5	379	552	655	-	-
N80	1	0.5	552	758	689	-	-
N80	Q	0.5	552	758	689	-	-
L80	1	0.5	552	655	655	23	241
L80	9Cr	0.5	552	655	655	23	241
L80	13Cr	0.5	552	655	655	23	241
C90	-	0.5	621	724	689	25.4	255
C95	-	0.5	655	758	724	-	-
T95	-	0.5	655	758	724	25.4	255
P110	-	0.6	758	965	862	-	-
Q125	All	0.65	862	1034	931	-	-

Production process

Casing Pipe Manufacturing Process:

Steel ingot heating → hydraulic punching → reheating → extension → periodic rolling → reheating → sizing → cooling → straightening → pipe cutting → inspection