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API 5CT Tubing

Product:

 Tubing Pipe, Oil Tubing, API Tubing Well Tubing, Tubing

Application: 

 Used for extracing Oil or Gas from Wells

Size:

 OD: 48.26mm-114.3mm


 WT: 3.18-16mm


 LENGTH: R1, R2, R3

Pipe 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:

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

Special Service

 Sweet Service, Sour Service, Anti-H2S, NACE MR0175/ISO15156

Accessories: 

 Pup Joint, Coupling, Drill Collar, Crossover etc.


Tubing is a relatively small-diameter pipe that is run into a well to serve as a conduit for the passage of oil and gas to the field surface facilities for processing. Tubing must be adequately strong to resist loads and deformations associated with production and workovers. Further, tubing must be sized to support the expected rates of production of oil and gas.

 

Tubing Specifications:

Tubing is specified by grade, outer diameter, weight, and connection. API tubing grades correspond to casing grades with the exception that P grade tubing has a tensile strength of 105,000 psi and is referred to as P105.

 

Tubing comes with non-upset (NUE) and external upset (EUE) ends. EUE tubing is more common, because of the benefit that cutting threads into the tubing ends does not reduce the body strength.

 

NB: for ESP applications, if power cable clearance between the tubing and casing becomes an issue, NUE tubing should be considered.

 

Internal diameter (ID): is a result of the OD and the wall thickness, and it is used to calculate pressure losses and velocities.

 

The drift diameter: is the diameter of a 42long mandrel that passes through tubing joint. It is a foremost parameter as it gives the maximum OD of any equipment to run through the tubing string.

 

Maximum outside diameter: it depends on the nominal diameter and the connection type. It is critical as it determines the strings size that we can run in a given casing.

 

Nominal size: is the outside diameter of the pipe body. The most used sizes are: 2-⅜”, 2-⅞”, 3-½” and 4-½”.

 

The tubing joint length: is the length of tubing joint including the coupling and excluding the pin thread. It is classified into two length range: range I: from 20 ft to 24 ft (6.1 to 7.32 m) long, or range II: from 28 ft to 32 ft (8.53 to 9.75 m) long. The length range must be chosen with care. It must be compatible with the hoisting and storage capacity of the mast of the rig used when running in hole the equipment during completion as well as later on during workover operations.

 

Package : Steel bundle ,Protector on both end .hexagonal bundles of max. 2000kgs with several steel strips , two tags on each bundle , wrapped in waterproof paper , PVC sleeve and sackcloth with several steel strips .

 

Heat treatment : Normalized , Quencher+Temper

 

Test : Chemical Component Analysis , Mechanical Properties (Ultimate tensile strenth ,Yield strenth ,Elongation )

Technical Properties ( Flattening test , flaring test , bending test , hardness test , blow test , impact test etc )

Exterior size inspection , Nondestructive test ( Ultrasonic flaw detector , eddy curent flaw detector ) Hydrostatic test .

 

Mill Test Certificate : EN10204/3.1B and EN10204/3.2 Certificat .

 

Third Party Inspection : SGS , BV ,LLoyds etc


The most common API tubing specifications are listed here. Others steel grades, nominal weights, and connections are available on request.

Label

OD (mm)

WT (mm)

Type of End-finish


NU T&C

EU T&C

IJ

H40

J55

L80

N80

C90

T95

P110

1.9

2.75

2.9

2.76

48.26

3.68

PNUI 

PNUI 

PNUI 

PNUI 

PNUI 

PNUI 

-

1.9

3.65

3.73

-

48.26

5.08

PU 

PU 

PU 

PU 

PU 

PU 

PU 

1.9

4.42

-

-

48.26

6.35

-

-

-

-

2 3/8

4

-

-

60.32

4.24

PU 

PN 

PN 

PN 

PN 

PN 

-

2 3/8

4.6

4.7

-

60.32

4.83

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

2 3/8

5.8

5.95

-

60.32

6.45

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

2 3/8

6.6

-

-

60.32

7.49

-

-

-

-

2 3/8

7.35

7.45

-

60.32

8.53

-

-

PU 

-

PU 

PU 

-

2 7/8

6.4

6.5

-

73.02

5.51

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

2 7/8

7.8

7.9

-

73.02

7.01

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

2 7/8

8.6

8.7

-

73.02

7.82

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

2 7/8

9.35

9.45

-

73.02

8.64

-

-

PU 

-

PU 

PU 

-

2 7/8

10.5

-

-

73.02

9.96

-

-

-

-

3 1/2

7.7

-

-

88.9

5.49

PN 

PN 

PN 

PN 

PN 

PN 

-

3 1/2

9.2

9.3

-

88.9

6.45

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

3 1/2

10.2

-

-

88.9

7.34

PN 

PN 

PN 

PN 

PN 

PN 

-

3 1/2

12.7

12.95

-

88.9

9.52

-

-

PNU 

PNU 

PNU 

PNU 

PNU 

3 1/2

14.3

-

-

88.9

10.92

-

-

-

-

3 1/2

15.5

-

-

88.9

12.09

-

-

-

-

4

9.5

-

-

101.6

5.74

PN 

PN 

PN 

PN 

PN 

PN 

-

4

10.7

11

-

101.6

6.65

PU 

PU 

PU 

PU 

PU 

PU 

-

4

13.2

-

-

101.6

8.38

-

-

-

-

4

16.1

-

-

101.6

10.54

-

-

-

-

4 1/2

12.6

12.75

-

114.3

6.88

PNU 

PNU 

PNU 

PNU 

PNU 

PNU 

-

4 1/2

15.2

-

-

114.3

8.56

-

-

-

-

 

Mechanical Properties:

Standard

Steel Grade

Tensile Strength(MPa)

Yield Strength(MPa)

Elongation(%)

Hardness

API SPEC 5CT

J55

≥517

379552

0.5%


K55

≥655

379~552

0.5%


N80

≥689

552~758

0.5%


L80(13Cr)

≥655

552~655

0.5%

≤241HB

P110

≥862

758~965

0.6%


 

Chemical Compositions(%):

Standard

Steel Grade

Chemical Compositions(%)

C

Si

Mn

P

S

Cr

Ni

Cu

Mo

V

Als

API SPEC 5CT

J55

0.340.39

0.200.35

1.251.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.20

/

/

≤0.020

K55

0.340.39

0.200.35

1.251.50

≤0.020

≤0.015

≤0.15

≤0.20

≤0.20

/

/

≤0.020

N80

0.340.38

0.200.35

1.451.70

≤0.020

≤0.015

≤0.15

/

/

/

0.110.16

≤0.020

L80(13Cr)

0.150.22

≤1.00

0.251.00

≤0.020

≤0.010

12.014.0

≤0.20

≤0.20

/

/

≤0.020

P110

0.260.35

0.170.37

0.400.70

≤0.020

≤0.010

0.801.10

≤0.20

≤0.20

0.150.25

≤0.08

≤0.020

 




API Spec 5CT – Specification 5CT/ISO 11960, Specification for Casing and Tubing, Eighth Edition, Petroleum and natural gas industries-Steel pipes for use as casing or tubing for wells


production process


Packing