API 5CT Oil Casing Suppliers

 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