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    API 5CT Casing

    Product

    Well casing

    Application

    Oil well casing serves as well sidewall

    Pipe Standard

    API SPEC 5CT 

    Size

    OD: 114.3-508mm


    WT: 5.21-16.13mm

    Thread types

    STC, LTC, BTC, special clearance, XC, VAM TOP, NEW VAM.


    What is API 5CT casing ?

    API SPEC 5CT well casing is utilized in fixing the well wall or down hole, which has wider diameters. API SPEC 5CT can be divided into conductor casing, technical casing and oil casing.

     

    API 5CT is standard technical specifications for steel casing pipes used for oil wells in petroleum and natural gas industries.

     

    Common Grades

    ? J55/K55

    ? N80/N80Q/L80

    ? C90

    ? R95/T95

    ? P110/C110

    ? Q125

     

    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

    ? IJ: Integral tubing connections


    More casing pipes and their colors

    More casing pipes and their colors.png


    API 5CT Well Casing Length:

    API 5CT Casing

    Range 1

    Range 2

    Range 3

    4.88~7.62 

    7.62~10.36

    10.36~14.63


    API 5CT Well Casing Dimension:

    Labels

    OD(mm)

    WT(mm)

    J55/K55

    N80

    L80

    C90/T95

    P110

    Q125

    4 1/2

    9.5

    114.3

    5.21

    PS

    -

    -

    -

    -

    -

    10.5

    114.3

    5.69

    PSB

    -

    -

    -

    -

    -

    11.6

    114.3

    6.36

    PSLB

    PLB

    PLB

    PLB

    PLB

    -

    13.5

    114.3

    7.37

    -

    PLB

    PLB

    PLB

    PLB

    -

    15.1

    114.3

    8.56

    -

    -

    -

    -

    PLB

    PLB

    5

    11.5

    127

    5.59

    PS

    -

    -

    -

    -

    -

    13

    6.43

    PSLB

    -

    -

    -

    -

    -

    15

    7.52

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    18

    9.19

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    21.4

    11.10

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    23.2

    12.14

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    24.1

    12.7

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    5 1/2

    14

    139.7

    6.20

    PS

    -

    -

    -

    -

    -

    15.5

    6.98

    PSLBE

    -

    -

    -

    -

    -

    17

    7.72

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    20

    9.17

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    23

    10.54

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    26.8

    12.7

    -

    -

    -

    P

    -

    -

    29.7

    14.27

    -

    -

    -

    P

    -

    -

    32.6

    15.88

    -

    -

    -

    P

    -

    -

    35.3

    17.45

    -

    -

    -

    P

    -

    -

    38

    19.05

    -

    -

    -

    P

    -

    -

    40.5

    20.62

    -

    -

    -

    P

    -

    -

    43.1

    64.14

    -

    -

    -

    P

    -

    -

    6 5/8

    20

    168.28

    7.32

    PSLB






    24

    8.94

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    28

    10.59

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    32

    12.06

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    7

    20

    177.8

    6.91

    PS






    23

    8.05

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    26

    9.19

    PSLBE

    PLBE

    PLBE

    PLBE

    PLBE

    -

    29

    10.6


    PLBE

    PLBE

    PLBE

    PLBE


    32

    11.51


    PLBE

    PLBE

    PLBE

    PLBE


    35

    12.65


    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    38

    13.72


    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    7 5/8

    26.4

    193.67

    8.33

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    29.7

    9.52

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    33.7

    10.92

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    39

    12.7

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    42.8

    14.27

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    45.3

    15.11

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    47.1

    15.88

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    8 5/8

    24

    219.08

    6.71

    PS

    -

    -

    -

    -

    -

    28

    7.72

    -

    -

    -

    -

    -

    -

    32

    8.94

    PSLBE

    -

    -

    -

    -

    -

    36

    10.16

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    40

    11.43

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    44

    12.70

    -

    PLBE

    PLBE

    PLBE

    PLBE

    -

    49

    14.15

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    9 5/8

    36

    244.48

    8.94

    PSLB

    -

    -

    -

    -

    -

    40

    10.03

    PSLBE

    PLBE

    PLBE

    PLBE

    -

    -

    43.5

    11.05

    -

    PLBE

    PLBE

    PLBE

    PLBE


    47

    11.99

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    53.5

    13.84

    -

    PLBE

    PLBE

    PLBE

    PLBE

    PLBE

    58.4

    15.11

    -

    PLB

    PLB

    PLB

    PLB

    PLB

    10 3/4

    40.5

    273.05

    8.89

    PSB

    -

    -

    -

    -

    -

    45.5

    10.16

    PSBE

    -

    -

    -

    -

    -

    51

    11.43

    PSBE

    PSBE

    PSBE

    PSBE

    PSBE

    -

    55

    12.57

    -

    PSBE

    PSBE

    PSBE

    PSBE

    -

    60.7

    13.84

    -

    -

    -

    PSBE

    PSBE

    PSBE

    65.7

    15.11

    -

    -

    -

    PSB

    PSB

    PSB

    113/4

    47

    298.45

    9.53

    PSB

    -

    -

    -

    -

    -

    54

    11.05

    PSB

    -

    -

    -

    -

    -

    60

    12.42

    PSB

    PSB

    PSB

    PSB

    PSB

    PSB

    13 3/8

    48

    339.72

    8.38

    -

    -

    -

    -

    -

    -

    54.5

    9.65

    PSB

    -

    -

    -

    -

    -

    61

    10.92

    PSB

    -

    -

    -

    -


    68

    12.19

    PSB

    PSB

    PSB

    PSB

    PSB

    -

    72

    13.06

    -

    PSB

    PSB

    PSB

    PSB

    PSB

    16

    75

    406

    11.13

    PSB

    -

    -

    -

    -

    -

    84

    12.57

    PSB

    -

    -

    -

    -

    -

    109

    16.66

    P

    P

    P

    -

    P

    P

    20

    94

    508

    11.13

    PSLB

    -

    -

    -

    -

    -

    30

    96

    762

    16.13

    PSLB

    -

    -

    -

    -

    -

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


    Mechanical Properties:

    Steel grade

    Type

    Yield Strength Mpa

    Tensile Strength (min) Mpa

    Hardness

    min

    max

    HRC

    HBW

    J55

    -

    379

    552

    517

    -

    -

    K55

    -

    379

    552

    655

    -

    -

    N80

    1

    552

    758

    689

    -

    -

    Q

    552

    758

    689

    -

    -

    L80

    1

    552

    655

    655

    23

    241

    9Cr

    552

    655

    655

    23

    241

    13Cr

    552

    655

    655

    23

    241

    C90


    621

    724

    689

    25.4

    255

    C95

    -

    655

    758

    724

    -

    -

    T95


    655

    758

    724

    25.4

    255

    P110

    -

    758

    965

    862

    -

    -

    Q125

    All

    862

    1034

    931

    -

    -

     


    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

    Casing.jpg


    Packing.jpg


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