Sanjack Intermediate casing

Sanjack Petro manufactures Intermediate casing in China. We have our own factory of Intermediate casing. Sanjack Petro provides the high quality and competitive price on Intermediate casing for you. Contact us now for Intermediate casing quotation.

  • Since 1995, Sanjack Petro has been producing OCTG Tubing & Casing and other special Tubing Pipes.
  • It is one of the most professional OCTG Tubing Manufacturers and Suppliers.
  • Sanjack has 20 years of API 5CT OCTG Tubing & Casing experience.
  • Magnetic Flux Leakage Testing, Ultrasonic Flaw Testing, Magnetic Particle Testing, Tubing Integrity Testing.

Intermediate casing
Intermediate casing is set to isolate:

  • Unstable hole sections
  • Lost-circulation zones
  • Low-pressure zones
  • Production zones
  • It is often set in the transition zone from normal to abnormal pressure.

    The casing cement top must isolate any hydrocarbon zones.

    Some wells require multiple intermediate strings.

    Some intermediate strings may also be production strings if a liner is run beneath them.
    Intermediate casing

    Intermediate casing

    Many troublesome formations can be encountered during drilling operations until getting to the production zone.

    These troublesome formations have to be isolated by what is called the intermediate casing.

    The number of strings runs as intermediate casing depends on the faced problems such as lost circulation zones, unstable shale, squeezing salts, and abnormally pressured zones.

    API 5CT Casing and Tubing Data Sheet

     

    Casing Pipe Dimensions and Weight Chart for API round thread and buttress thread

     

     

    Labels

    Outside diameter Nominal

    linear mass T&C

    Wall thickness Inside diameter Drift diameter Calculated mass C
    Plain end Mass gain or loss due to end finishing (lb)
    Round thread Buttress thread
    1 2.00 D in lb/ft t in d in in lb/ft Short Long RC SCC
    1 2 3 4 5 6 7 8 9 10 11 12
    4 1/2 9.50 4.500 9.50 0.205 4.090 3.965 9.41 4.20      
    4 1/2 10.50 4.500 10.50 0.224 4.052 3.927 10.24 3.80   5.00 2.56
    4 1/2 11.60 4.500 11.60 0.250 4.000 3.875 11.36 3.40 3.80 4.60 2.16
    4 1/2 13.50 4.500 13.50 0.290 3.920 3.795 13.05   3.20 4.00 1.56
    4 1/2 15.10 4.500 15.10 0.337 3.826 3.701 15.00   2.80 3.20 0.76
    5 11.50 5.000 11.50 0.220 4.560 4.435 11.24 5.40      
    5 13.00 5.000 13.00 0.253 4.494 4.369 12.84 4.80 5.80 6.60 2.42
    5 15.00 5.000 15.00 0.296 4.408 4.283 14.88 4.20 5.20 5.80 1.62
    5 18.00 5.000 18.00 0.362 4.276 4.151 17.95   4.20 4.40 0.22
    5 21.40 5.000 21.40 0.437 4.126 4.001 21.32   2.95 2.46 -1.72
    5 23.20 5.000 23.20 0.478 4.044 3.919 23.11   2.30 2.05 -2.09
    5 24.10 5.000 24.10 0.500 4.000 3.875 24.05   1.95 1.24 -2.94
    5 1/2 14.00 5.500 14.00 0.244 5.015 4.887 13.71 5.40      
    5 1/2 15.50 5.500 15.50 0.275 4.950 4.825 15.36 4.80 5.80 6.40 2.10
    5 1/2 17.00 5.500 17.00 0.304 4.892 4.767 16.89 4.40 5.40 5.80 1.50
    5 1/2 20.00 5.500 20.00 0.361 4.778 4.653 19.83   4.40 4.60 0.30
    5 1/2 23.00 5.500 23.00 0.415 4.670 4.545 22.56   3.20 3.40 0.90
    5 1/2 26.80 5.500 26.80 0.500 4.500 4.375 26.72        
    5 1/2 29.70 5.500 29.70 0.562 4.376 4.251 29.67        
    5 1/2 32.60 5.500 32.60 0.625 4.250 4.125 32.57        
    5 1/2 35.30 5.500 35.30 0.687 4.126 4.001 35.35        
    5 1/2 38.00 5.500 38.00 0.750 4.000 3.875 38.08        
    5 1/2 40.50 5.500 40.50 0.812 3.876 3.751 40.69        
    5 1/2 43.10 5.500 43.10 0.875 3.750 3.625 43.26        
    7 17.00 7.000 17.00 0.231 6.538 6.413 16.72 10.00      
    7 20.00 7.000 20.00 0.272 6.456 6.331 19.56 9.40      
    7 23.00 7.000 23.00 0.317 6.366 6.250 22.65 8.00 10.40 11.00 1.60
    7 23.00 7.000 23.00 0.317 6.366 6.241 22.65 8.00 10.40 11.00 1.60
    7 26.00 7.000 26.00 0.362 6.276 6.151 25.69 7.20 9.40 9.60 0.20
    7 29.00 7.000 29.00 0.408 6.184 6.059 28.75   8.00 8.20 1.20
    7 32.00 7.000 32.00 0.453 6.094 6.000 31.70   6.60 6.80 2.60
    7 32.00 7.000 32.00 0.453 6.094 5.969 31.70   6.60 6.80 2.60
    7 35.00 7.000 35.00 0.498 6.004 5.879 34.61   5.60 5.60 3.80
    7 38.00 7.000 38.00 0.540 5.920 5.795 37.29   4.40 4.20 5.20
    7 42.70 7.000 42.70 0.625 5.750 5.625 42.59        
    7 46.40 7.000 46.40 0.687 5.625 5.500 46.36        
    7 50.10 7.000 50.10 0.750 5.500 5.375 50.11        
    7 53.60 7.000 53.60 0.812 5.376 5.251 53.71        
    7 57.10 7.000 57.10 0.875 5.250 5.125 57.29        
    9 5/8 32.30 9.625 32.30 0.312 9.001 8.845 31.06 24.40      
    9 5/8 36.00 9.625 36.00 0.352 8.921 8.876 34.89 23.00 32.00 31.00 6.48
    9 5/8 40.00 9.625 40.00 0.395 8.835 8.750 38.97 21.40 30.00 29.00 4.48
    9 5/8 40.00 9.625 40.00 0.395 8.835 8.679 38.97 21.40 30.00 29.00 4.48
    9 5/8 43.50 9.625 43.50 0.435 8.755 8.599 42.73   28.20 27.20 2.68
    9 5/8 47.00 9.625 47.00 0.472 8.681 8.525 46.18   26.60 25.60 1.08
    9 5/8 53.50 9.625 53.50 0.545 8.535 8.500 52.90   23.40 22.40 -2.12
    9 5/8 53.50 9.625 53.50 0.545 8.535 8.379 52.90   23.40 22.40 -2.12
    9 5/8 58.40 9.625 58.40 0.595 8.435 8.375 57.44   21.50 20.13 -4.40
    9 5/8 58.40 9.625 58.40 0.595 8.435 8.279 57.44   21.50 20.13 -4.40
    9 5/8 59.40 9.625 59.40 0.609 8.407 8.251 58.70        
    9 5/8 64.90 9.625 64.90 0.672 8.281 8.125 64.32        
    9 5/8 70.30 9.625 70.30 0.734 8.157 8.001 69.76        
    9 5/8 75.60 9.625 75.60 0.797 8.031 7.875 75.21        
    13 3/8 48.00 13.375 48.00 0.330 12.715 12.559 46.02 33.20      
    13 3/8 54.50 13.375 54.50 0.380 12.615 12.459 52.79 30.80   40.20  
    13 3/8 61.00 13.375 61.00 0.430 12.515 12.359 59.50 28.40   36.80  
    13 3/8 68.00 13.375 68.00 0.480 12.415 12.259 66.17 25.80   33.60  
    13 3/8 72.00 13.375 72.00 0.514 12.347 12.250 70.67 24.20   31.60  
    13 3/8 72.00 13.375 72.00 0.514 12.347 12.191 70.67 24.20   31.60  
    18 5/8 87.50 18.625 87.50 0.435 17.755 17.567 84.59 73.60   86.40  
    20 94.00 20.000 94.00 0.438 19.124 18.936 91.59 47.00 61.20 54.80  
    20 106.50 20.000 106.50 0.500 19.000 18.812 104.23 41.60 54.80 48.40  
    20 133.00 20.000 133.00 0.635 18.730 18.542 131.45 30.00 40.60 35.20  

     

    Chemical Composition

     

    Chemical Composition, mass fraction (%)
    Group Grade Type C Mn Mo Cr Ni Cu P S Si
    min. max. min. max. min. max. min. max. max. max. max. max. max
     

     

     

    1

    H40 0.03 0.03
    J55 0.03 0.03
    K55 0.03 0.03
    N80 1 0.03 0.03
    N80 Q 0.03 0.03
    R95 0.45 1.90 0.03 0.03 0.45
     

     

     

    2

    M65 0.03 0.03
    L80 1 0.43 1.90 0.25 0.35 0.03 0.03 0.45
    L80 9Cr 0.15 0.30 0.60 0.90 1.10 8.00 10.00 0.50 0.25 0.02 0.01 1
    L80 13Cr 0.15 0.22 0.25 1.00 12.00 14.00 0.50 0.25 0.02 0.01 1
    C90 1 0.35 1.20 0.25 0.85 1.50 0.99 0.02 0.01
    T95 1 0.35 1.20 0.25 0.85 0.40 1.50 0.99 0.02 0.01
    C110 0.35   1.20 0.25 1.00 0.40 1.50 0.99   0.02 0.005
    3 P110   0.03 0.03
    4 Q125 1 0.35 1.35 0.85 1.50 0.99 0.02 0.01
    1. The carbon content for L80 may be increased up to 0,50 % maximum if the product isoil-quenched.
    2. The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the WT is less than 17,78
    3. The carbon content for R95 may be increased up to 0,55 % maximum if the product isoil-quenched.
    4. Themolybdenum content for T95 Type 1 may be decreased to 0,15 % minimum if the WT is less than 17,78
    5. For EW Grade P110, the phosphorus content shall be 0,020 % maximum, and the sulfur content 0,010 % maximum. NL = no limit. Elements shown shall be reported in product

     

    Mechanical Properties

     

    Mechanical Properties
     

    Group

     

    Grade

     

    Type

    Total elongation

    under load

    Yield strength MPa Tensile strength min. Hardeness max.
    % min. max. MPa HRC HBW
     

     

     

    1

    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
    R95 0.5 655 758 724
     

     

     

    2

    M65 0.5 448 586 586 22 235
    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 1 0.5 621 724 689 25.4 255
    T95 1 0.5 655 758 724 25.4 255
    C110 0.7 758 828 793 30 286
    3 P110 0.6 758 965 862
    4 Q125 1 0.65 862 1034 931  
    1. In case of dispute, laboratory Rockwell C hardness testing shall be used as the referee
    2. No hardness limits, but the maximum variation is controlled by manufacturer acc API

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