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Casing Pipe

Pipe Type:seamless cold drawn tubes , hot finished seamless pipes,Stainless Steel Tube, Precision Tube
Application:Casing serves as well sidewall Tubing is used for extracting petroleum and natural gas from well;
Casing serves as wells of a well.
Specification: OD:40.26mm~ 508mm
WT:0.205’’ ~ 0.635’’ (5.21mm ~ 16.13mm)
LENGTH: R1, R2, R3
Standard:Standards and Technical Conditions for Supply:API Spec 5CT ISO13680
NFA NACE API  ISO HAF,S355,K55,5CT,5DP,G105,J55,S355J2H
Grade :H40、J55、K55、M65、L80-1、N80-1、N80Q、C90、P110、Q125,
X42,X52,X56,X60,X65,X70,PSL1,PSL2,API5L.GRA,B,C
Ends: Beveled, Square Cut, With LTC/STC/BTC/VAM Connection
Surface:Anti-corrosion Water Based Paint
Packing:Protection Caps in Both Ends, Waterproof Paper Wrapped

Tubing Sizes

 Tubing Sizes

 Processed Forms of end finish

Outer Diameter

Wall Thickness

H40

J55

L80

N801

N80Q

C90

T95

P110

in

mm

in

mm



1.900

48.26

0.125

3.18

PI

PI

/

/

/

/

0.145

3.68

PNUI

PNUI

PNUI

PNUI

PNUI

/

0.200

5.08

PU

PU

PU

PU

PU

PU

0.250

6.35

/

/

P

/

P

/

0.300

7.62

/

/

P

/

P

/

2.063

52.40

0.156

3.96

PI

PI

PI

PI

PI

/

0.225

5.72

P

P

P

P

P

P

2 3/8

60.32

0.167

4.24

PU

PN

PN

PN

PN

/

0.190

4.83

PNU

PNU

PNU

PNU

PNU

PNU

0.254

6.45

/

/

PNU

PNU

PNU

PNU

0.295

7.49

/

/

P

/

P

/

0.336

8.53

/

/

PU

/

PU

/

2 7/8

73.02

0.217

5.51

PNU

PNU

PNU

PNU

PNU

PNU

0.276

7.01

/

/

PNU

PNU

PNU

PNU

0.308

7.82

/

/

PNU

PNU

PNU

PNU

0.340

8.64

/

/

PU

/

PU

/

0.392

9.96

/

/

P

/

P

/

0.440

11.18

/

/

P

/

P

/

3 1/2

88.90

0.216

5.49

PN

PN

PN

PN

PN

/

0.254

6.45

PNU

PNU

PNU

PNU

PNU

PNU

0.289

7.34

PN

PN

PN

PN

PN

/

0.375

9.52

/

/

PNU

PNU

PNU

PNU

0.430

10.92

/

/

P

/

P

/

0.476

12.09

/

/

P

/

P

/

0.530

13.46

/

/

P

/

P

/

4

101.60

0.226

5.74

PN

PN

PN

PN

PN

/

0.262

6.65

PU

PU

PU

PU

PU

/

0.330

8.38

/

/

P

/

P

/

0.415

10.54

/

/

P

/

P

/

0.500

12.70

/

/

P

/

P

/

0.610

15.49

/

/

P

/

P

/

4 1/2

114.30

0.271

6.88

PNU

PNU

PNU

PNU

PNU

/

0.337

8.56

/

/

P

/

P

/

0.380

9.65

/

/

P

/

P

/

0.430

10.92

/

/

P

/

P

/

0.500

12.70

/

/

P

/

P

/

0.560

14.22

/

/

P

/

P

/

0.630

16.00

/

/

P

/

P

/


Note: P—plain-end;N—non-upset, with threaded and coupled;U—external-upset, with threaded and coupled;I—whole joint.


Casing Sizes:

 Casing Sizes

 Processed Forms of end finish

Outer Diameter

Wall Thickness

H40

J55

K55

M65

L80

N801

N80Q

C90

T95

P110

Q125

in

mm

in

mm



4 1/2

114.30

0.205

5.21

PS

PS

PS

/

/

/

/

/

0.224

5.69

/


PSB

PSB

/

/

/

/

0.250

6.35

/

PSLB

PLB

PLB

PLB

P

PLB

/

0.290

7.37

/

/

PLB

PLB

PLB

P

PLB

/

0.337

8.56

/

/

/

/

/

/

PLB

PLB

5

127.00

0.220

5.59

/

PS

PS

/

/

/

/

/

0.253

6.43

/

PSLB

PSLB

/

/

/

/

/

0.296

7.52

/

PSLB

PLB

PLB

PLB

PLB

PLB

/

0.362

9.19

/

/

PLB

PLB

PLB

PLB

PLB

PLB

0.437

11.10

/

/

PLB

PLB

PLB

PLB

PLB

PLB

0.478

12.14

/

/

/

PLB

PLB

PLB

PLB

PLB

0.500

12.70

/

/

/

PLB

PLB

PLB

PLB

PLB

5 1/2

139.70

0.244

6.20

PS

PS

PS

/

/

/

/

/

0.275

6.98

/

PSLB

PSLB

/

/

/

/

/

0.304

7.72

/

PSLB

PLB

PLB

PLB

PLB

PLB

/

0.361

9.17

/

/

PLB

PLB

PLB

PLB

PLB

/

0.415

10.51

/

/

PLB

PLB

PLB

PLB

PLB

PLB

0.500

12.70

/

/

/

/

/

P

/

/

0.562

14.27

/

/

/

/

/

P

/

/

0.625

15.88

/

/

/

/

/

P

/

/

0.687

17.45

/

/

/

/

/

P

/

/

0.750

19.05

/

/

/

/

/

P

/

/

0.812

20.62

/

/

/

/

/

P

/

/

0.875

22.22

/

/

/

/

/

P

/

/

6 5/8

168.28

0.288

7.32

PS

PSLB

PSLB

/

/

/

/

/

0.352

8.94

/

PSLB

PLB

PLB

PLB

PLB

PLB

/

0.417

10.59

/

/

PLB

PLB

PLB

PLB

PLB

/

0.475

12.06

/

/

/

PLB

PLB

PLB

PLB

PLB

7

177.80

0.231

5.87

PS

/

/

/

/

/

/

/

0.272

6.91

PS

PS

PS

/

/

/

/

/

0.317

8.05

/

PSLB

PLB

PLB

PLB

PLB

/

/

0.362

9.19

/

PSLB

PLB

PLB

PLB

PLB

PLB

/

0.408

10.36

/

/

PLB

PLB

PLB

PLB

PLB

/

0.453

11.51

/

/

PLB

PLB

PLB

PLB

PLB

/

0.498

12.65

/

/

/

PLB

PLB

PLB

PLB

PLB

0.540

13.72

/

/

/

PLB

PLB

PLB

PLB

PLB

0.625

15.88

/

/

/

/

/

P

/

/

0.687

17.45

/

/

/

/

/

P

/

/

0.750

19.05

/

/

/

/

/

P

/

/

0.812

20.62

/

/

/

/

/

P

/

/

0.875

22.22

/

/

/

/

/

P

/

/

7 5/8

193.68

0.300

7.62

PS

/

/

/

/

/

/

/

0.328

8.33

/

PSLB

PSLB

PLB

PLB

PLB

/

/

0.375

9.52

/

/

PLB

PLB

PLB

PLB

PLB

/

0.430

10.92

/

/

PLB

PLB

PLB

PLB

PLB

/

0.500

12.70 

/

/

/

PLB

PLB

PLB

PLB

PLB

0.562

14.27

/

/

/

PLB

PLB

PLB

PLB

PLB

0.595

15.11

/

/

/

PLB

PLB

PLB

PLB

PLB

0.625

15.88

/

/

/

PLB

PLB

PLB

PLB

PLB

0.687

17.45

/

/

/

/

/

P

/

/

0.750

19.05

/

/

/

/

/

P

/

/

7 3/4

198.85

0.595

15.11

/

/

/

P

P

P

P

P

Casing Sizes

 Processed Forms of end finish

Outer Diameter

Wall Thickness

H40

J55

K55

M65

L80

N801

N80Q

C90

T95

P110

Q125

in

mm

in

mm



8 5/8

219.08

0.264

6.71

/

PS

PS

/

/

/

/

/

0.304

7.72

PS

/

PS

/

/

/

/

/

0.352

8.94

PS

PSLB

PSLB

/

/

/

/

/

0.400

10.16

/

PSLB

PSLB

PLB

PLB

PLB

/

/

0.450

11.43

/

/

PLB

PLB

PLB

PLB

PLB

/

0.500

12.70

/

/

/

PLB

PLB

PLB

PLB

/

0.557

14.15

/

/

/

PLB

PLB

PLB

PLB

PLB

9 5/8

244.48

0.312

7.92

PS

/

/

/

/

/

/

/

0.352

8.94

PS

PSLB

PSLB

/

/

/

/

/

0.395

10.03

/

PSLB

PSLB

PLB

PLB

PLB

/

/

0.435

11.05

/

/

PLB

PLB

PLB

PLB

PLB

/

0.472

11.99

/

/

PLB

PLB

PLB

PLB

PLB

PLB

0.545

13.84

/

/

/

PLB

PLB

PLB

PLB

PLB

0.595

15.11

/

/

/

PLB

PLB

PLB

PLB

PLB

0.609

15.47

/

/

/

/

/

P

/

/

0.672

17.07

/

/

/

/

/

P

/

/

0.734

18.64

/

/

/

/

/

P

/

/

0.797

20.24

/

/

/

/

/

P

/

/


Note:P—plain-end;S—short round thread;L—long round thread;B—buttress thread。

Other size pipes can also be provided after consulting with customers.







Chemical Composition, Mass Fraction(%)


steel grade


type

C

Mn

Mo

Cr

Ni

Max

Cu

Max

P

Max

S

Max

Si

Max

Min

Max

Min

Max

Min

Max


Max





H40

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

J55

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

K55

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

N80

1

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

N80

Q

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

M65

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

L80

1

-

0.43

-

1.90

-

-

-

-

0.25

0.35

0.030

0.030

0.45

L80

9 Cr

-

0.15

0.30

0.60

0.90

1.10

8.00

10.0

0.50

0.25

0.020

0.010

1.00

L80

13 Cr

0.15

0.22

0.25

1.00

-

-

12.0

14.0

0.50

0.25

0.020

0.010

1.00

C90

1

-

0.35

-

1.20

0.25

0.85

-

1.50

0.99

-

0.020

0.010

-

P110

-

-

-

-

-

-

-

-

-

-

-

0.030

0.030

-

Q125

1

-

0.35

-

1.35

-

0.85

-

1.50

0.99

-

0.020

0.010

-

Note:If the wall thickness is less than 17.78mm, the molybdenum content of the C90-1 steel grade has no lower limit.

    

 Dimension Tolerances


Tolerance

D

Outside Diameter


Pipe Body

D≤101.60mm,±0.79mm

D≥114.30mm,+1.0%, -0.5%D 

Coupling

±1%D

       t  Wall Thickness                                      

0, -12.5%t

                 

Weight 

Single Lengths

+6.5%,-3.5%

Carload Lots or Order Quantity

≥18144 kg(40000ib),0,-1.75%

<18144 kg(40000ib),0,-3.5%

 

Tensile and Hardness Requirements


steel grade


type


total elongation under load (%)


yield strength (Mpa)


tensile strength (Mpa)

min

hardness 

max

min

max

HRC

HBW


H40

-

0.5

276

552

414

-

-

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

-

-

M65

-

0.5

448

586

586

22

235

L80

1

0.5

552

655

655

23

241

L80

9 Cr

0.5

552

655

655

23

241

L80

13 Cr

0.5

552

655

655

23

241

C90

1

0.5

621

724

689

25.4

255

P110

-

0.6

758

965

862

-

-



HTB1dlAHs3mTBuNjy1Xbq6yMrVXal

Casing: Casing is a wide range pipe that serves as the structural retainer for the walls of oil and gas wells, or well bore. It is inserted into a well bore and cemented in place to protect both subsurface formations and the wellbore from collapsing,  to allow drilling fluid to circulate, and extraction to take place. 

used for lining the complete borehole which has been dug into the ground to procure oil. Similar to the drill pipe, the oil well casing pipe is also subjected to axial tension, therefore they are required to be made from high-quality strong steel material. OCTG casing is large diameter pipe which are held in place in the borehole using cement.
The diameters of OCTG casing pipe range from 4.5″ to 36″. The well-cemented pipe acts as the structural component of the well and offer hole integrity. They prevent the well from collapsing when the drilling process is on. Good quality, well cemented casing can stay in place for the whole life of the well.The oil well casing pipe are further divided into:

  • Conductor Casing – Conductor casing is the first boundary between the surface and the subsurface. It helps prevention of well collapse; it keeps away the groundwater and most importantly provides structural support. Conductor casing is installed in the ground by either drilling it or hammering it down. They are available in sizes ranging from 18″ to 36″.

  • Surface Casing – The purpose of Surface casing is primarily environmental and to ensure safety. It helps in separating the freshwater zones, offering protection from blowout and supporting the wellhead and blow out prevention (BOP) equipment. Therefore surface casings are required to maintain very high safety standards. They are responsible for supporting the next casing in line.  They may vary in size depending on their purpose, but the most common size of surface casing is 13 3/8”.
    Intermediate Casing: Intermediate casing is not always required in all types of oil and gas production. If used, they are placed between the surface and the production casing. They are available in sizes ranging from 13 3/8” to 16”.

  • Production Casing – Production casing help provide structural integrity and pressure control of the hydrocarbon-bearing sections mainly during the production of oil.

  • Production Liner – Production liners can be suspended from the production casing or one of the previous casings. They help in reducing the cost significantly as the liner is not required to run through the full depth of the well. Liners can be pre-perforated to help save time and cost.

The oil well casing is subject to high axial tension because of the external pressure received from the rocks surrounding it and the internal pressure during the oil extraction. A well-cemented casing can be very useful in the drilling process in several ways:

  • The casing holds the drill string, preventing the unstable upper formation from caving in

  • Helps the prevention of contamination of water well zones
    Provides an even internal bore for easy installation of the production equipment

  • Helps prevention of the contamination of production zones

  • Helps prevention of fluid (oil) loss

  • Helps seal off the high-pressure zones from the surface of the earth

Standards and Technical Conditions for Supply:API Spec 5CT ISO13680

Steel Grade: H40、J55、K55、M65、L80-1、N80-1、N80Q、C90、P110、Q125




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QUICK LINKS

CONTACT US

  Hunan Gaoxing Steel Development Zone, No.1888 Purui South Rd, Wangcheng District,Changsha, Hunan, China

  0086-187-7406-7534

  inquiry@threewaysteel.com

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