Products

Casing Pipe

Casing Pipe

    Casing  pipe is 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.

    Casing pipe installation

    Installation of casing pipe involves assembling series of steel pipes comprising individual joints, with varying lengths depending on the type of casing string. These joints feature male threads on each end, connected together using short sections of double-female threaded pipe known as collars or couplings. Some manufacturers offer pipe joints with pre-attached female threads on one end. Each pipe string has a decreasing diameter compared to the previous one, tapering the strings down into the wellbore.

    Casing strings and drill strings alternate within the wellbore. After completing a section of drilling, the drill string is removed from the hole, a new casing string is inserted and cemented, and then the drill string is re-inserted with a smaller bit to accommodate the narrower pipe.

    Once inside the wellbore, steel pipe casing strings are cemented in place around the outside diameter of the pipe. This is achieved by pumping a mixture of cement slurry and drilling mud down the casing string with a bottom plug and a top plug. The mixture flows through the casing, filling the space between the outside of the pipe and the well wall (the annular space/annulus). Following cementing of the casing pipe, drilling operations can resume.

    Tubing is inserted inside the wellbore through the oil well casing pipe, which helps the transportation of the hydrocarbons to the surface. It is pipe either used for transporting natural gas or crude oil to the facilities for further processing after the drilling is complete. Similar to the drill pipe and casing, tubing also is subjected to high pressure during the extraction process, and hence needs to be thick, strong and sturdy. Production tubing is available in various sizes ranging from ¾” to 4 ½”.

    Casing sizes:
    Sizes:        13-3/8” thru 4-1/2” Casing
    Grades:     J-55, L-80, N-80, And P-110
    Range:      Range 1 thru Range 3
    Connections:  BTC, STC, LTC, NUE, EUE
    Bands:      White, Yellow, Blue, and Green

    Tubing sizes:
    Sizes:       4-1/2” thru 2-1/16”
    Grades:    J-55, L-80, N-80, And P-110
    Range:     Range 2
    Connections:  BTC, STC, LTC, NUE, EUE
    Bands:     White, Yellow, Blue, and Green



    Casing Pipe Application:

    Road Bore Casing

    Water Well Casing

    Culverts Casing

    Open Cut Casing

    Oil and Gas Transmission Pipeline Casing

    Drilling Casing – Surface Casing – Rathole Casing

    Tunnel Casing

     



    Casing Manufacturing Process
    Casing Manufacturing Process

    Casing pipe Manufacturing Process
    ❶ Steelmaking
    Degassing and desulfurizing of the metal during the steelmaking process produce clean steel with low non-metalic inclusions and better surface finish.
    ❷ Hot Rolling
    Advanced hot rolling results in hot coil with a fine grain structure and high dimensional accuracy.
    ❸ Spiral Looper
    The spiral looper supplies a steady feed of coil downstream to the continuous edge milling, pipe forming and welding stands.
    ❹ Forming Stands
    Heavy duty stands accurately form the incoming coil into pipe having a wide range of wall thickness and outside diameter.
    ❺ HF-Welder
    “Welding Condition Monitoring and Controling System”, developed by NSSMC, produces high quality welds. Seams are inspected by ultrasonic testing.
    ❻ Welded Seam Heat Treatment
    Heat treatment in the welded zone stabilizes the microstructure and gives it the same physical properties as the base metal. The exact seam position is determined by optical sensors for seam heat treatment, and ultrasonic and hydrostatic testing.
    ❼ Non-destructive Testing
    Every length and entire surface of each T.U.F.-Pipe is subjected to a full line-up of non-destructive tests.
    ❽ Automatic Inspection
    Every pipe is given a comprehensive check using automatic inspection equipment.
    ❾ Monitoring and Tracking System
    T.U.F.-Pipe is monitored and tracked at every stage of production by on-line computers. All manufacturing data is stored by computer and can be made available in any form required by the customer.
    ❿ Marking
    Automatic stencilling and die-stamping machines identify and clearly mark every pipe.
    ⓫ Threading
    Advanced NC lathes cut high precision threads to order. Connectors for large O.D. casings are also available. The use of thread protectors is recommended to prevent damage to the connectors during handling, loading and pipe rolling.

    Casing Pipe Coupling colour code



     

    Casing Pipe 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:

     Casing Pipe

    Tolerance

     

    Outside Diameter

     

    Pipe Body

    D≤101.60mm,±0.79mm

    D≥114.30mm,+1.0%, -0.5%D 

    Coupling

    ±1%D

    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

    -

    -

     

    Seamless casing specification
    Outside Diameter Nominal Weight Wall Thickness Grade and Connection Type*
    in. mm lb/ft kg/m in. mm J55
    K55
    M65 L80
    C95
    N80 C90
    T95
    P110
    4-1/2 114.30 9.50 14.14 0.205 5.21 PS PS - - - -
    10.50 15.63 0.224 5.69 PSB PSB - - - -
    11.60 17.26 0.250 6.35 PSLB PLB PLB PLB PLB PLB
    13.50 20.09 0.290 7.37 - PLB PLB PLB PLB PLB
    15.10 22.47 0.337 8.56 - - - - - PLB
    5 127.00 11.50 17.11 0.220 5.59 PS PS - - - -
    13 19.35 0.253 6.43 PSL PSLB - - - -
    15.00 22.32 0.296 7.52 PSLB PLB PSLB PSLB PSLB PSLB
    18.00 26.79 0.362 9.19 - PLB PSLB PSLB PSLB PSLB
    21.40 31.85 0.437 11.10 - PLB PLB PLB PLB PLB
    23.20 34.53 0.478 12.14 - - PLB PLB PLB PLB
    24.10 35.86 0.500 12.70 - - PLB PLB PLB PLB
    5-1/2 139.70 14.00 20.83 0.244 6.20 PS PS - - - -
    15.50 23.07 0.275 6.98 PSLB PSLB - - - -
    17.00 25.30 0.304 7.72 PSLB PLB PSLB PSLB PLB PSLB
    20.00 29.76 0.361 9.17 - PLB PSLB PSLB PLB PSLB
    23.00 34.23 0.415 10.54 - PLB PSLB PSLB PLB PSLB
    6-5/8 168.28 20.00 29.76 0.288 7.32 PSLB PSLB - - - -
    24.00 35.72 0.352 8.94 PSLB PLB PSLB PSLB PSLB PSLB
    28.00 41.67 0.417 10.59 - PLB PSLB PSLB PSLB PSLB
    32.00 47.62 0.475 12.06 - - PSLB PSLB PSLB PSLB
    7 177.80 20.00 29.76 0.272 6.91 PS PS - - - -
    23.00 34.23 0.317 8.05 PSLB PLB PSLB PSLB PLB -
    26.00 38.69 0.362 9.19 PSLB PLB PSLB PSLB PLB PSLB
    29.00 43.16 0.408 10.36 - PLB PSLB PSLB PLB PSLB
    32.00 47.62 0.453 11.51 - PLB PSLB PSLB PLB PSLB
    35.00 52.13 0.498 12.65 - - PSLB PSLB PLB PSLB
    38.00 56.60 0.540 13.72 - - PSLB PSLB PLB PSLB
    7-5/8 193.68 26.40 39.29 0.328 8.33 PSLB PSLB PLB PLB PLB -
    29.70 44.20 0.375 9.52 - PLB PLB PLB PLB PLB
    33.70 50.15 0.430 10.92 - PLB PLB PLB PLB PLB
    39.00 58.05 0.500 12.70 - - PLB PLB PLB PLB
    42.80 63.69 0.562 14.27 - - PLB PLB PLB PLB
    45.30 67.41 0.595 15.11 - - PLB PLB PLB PLB
    47.10 70.09 0.625 15.88 - - PLB PLB PLB PLB
    8-5/8 219.08 24.00 36.75 0.264 6.71 PS PS - - - -
    28.00 41.67 0.304 7.72 - PS - - - -
    32.00 47.66 0.352 8.94 PSLB PSLB - - - -
    36.00 53.62 0.400 10.16 PSLB PSLB PLB PLB PLB -
    40.00 59.58 0.450 11.43 - PLB PLB PLB PLB PLB
    44.00 65.54 0.500 12.70 - - PLB PLB PLB PLB
    49.00 72.99 0.557 14.15 - - PLB PLB PLB PLB
    9-5/8 244.48 36.00 53.57 0.352 8.94 PSLB PSLB - - - -
    40.00 59.53 0.395 10.03 PSLB PSLB PLB PLB PLB -
    43.50 64.73 0.435 11.05 - PLB PLB PLB PLB PLB
    47.00 69.94 0.472 11.99 - PLB PLB PLB PLB PLB
    53.50 79.62 0.545 13.84 - - PLB PLB PLB PLB
    58.40 86.91 0.595 15.11 - - PLB PLB PLB PLB
    10-3/4 273.05 40.50 60.32 0.350 8.89 PSB PSB PLB PLB PLB PLB
    45.50 67.78 0.400 10.16 PSB PSB - - - -
    51.00 75.96 0.450 11.43 PSB PSB PSB PSB PSB PSB
    55.50 72.67 0.495 12.57 - PSB PSB PSB PSB PSB
    60.70 90.41 0.545 13.84 - - - - PSB PSB
    65.70 97.86 0.595 15.11 - - - - PSB PSB
    13-3/8 339.70 54.50 81.18 0.380 9.65 PSB PSB - - PSB PSB
    61.00 90.86 0.430 10.92 PSB PSB - - - -
    68.00 101.29 0.480 12.19 PSB PSB PSB PSB PSB PSB
    72.00 107.24 0.514 13.06 - - - - PSB PSB
    20 508.00 94.00 139.89 0.438 11.13 SLB SLB - - - -
    106.50 158.49 0.500 12.70 SLB SLB - - - -
    133.00 197.93 0.635 16.13 SLB - - - - -
     
    ERW casing specification
    Outside Diameter Nominal Weight Wall Thickness Grade Connection Type*
    in. mm lb/ft kg/m in. mm
    5-1/2 139.70 14.00 20.83 0.244 6.20 J55/K55 PS
    15.50 23.07 0.275 6.98 J55/K55 PSLB
    17.00 25.30 0.304 7.72 J55/K55 PSLB
    6-5/8 168.28 24.00 35.72 0.352 8.94 J55/K55 PSLB
    7 177.80 20.00 29.76 0.272 6.91 J55/K55 PS
    23.00 34.23 0.317 8.05 J55/K55 PSLB
    26.00 38.69 0.362 9.19 J55/K55 PSLB
    8-5/8 219.08 24.00 35.75 0.264 6.71 J55/K55 PS
    28.00 41.67 0.304 7.72 J55/K55 PS
    32.00 47.66 0.352 8.94 J55/K55 PSLB
    36.00 53.62 0.400 10.16 J55/K55 PSLB
    9-5/8 244.48 36.00 53.57 0.352 8.94 J55/K55 PSLB
    40.00 59.53 0.395 10.03 J55/K55 PSLB
    10-3/4 273.05 40.50 60.32 0.350 8.89 J55/K55 PSB
    45.50 67.78 0.400 10.16 J55/K55 PSB
    13-3/8 339.70 48.00 71.43 0.330 8.38 J55/K55 PSB
    54.50 81.18 0.380 9.65 J55/K55 PSB
    61.00 90.86 0.430 10.92 J55/K55 PSB
    68.00 101.29 0.480 12.19 J55/K55 PSB
     
    Tubing specification
    Outside Diameter Wall Thickness Weight Grade and Upset Type*
    Non-Upset T&C External Upset T&C
    in. mm in. mm lb/ft kg/m lb/ft kg/m J55 L80 N80 C90 P110
    2-3/8 60.32 0.167 4.24 4.00 5.95 - - PN PN PN PN -
    0.190 4.83 4.60 6.85 4.70 6.99 PNU PNU PNU PNU PNU
    0.254 6.45 5.80 8.63 5.95 8.85 - PNU PNU PNU PNU
    0.336 8.53 7.35 10.94 7.45 11.09 PU - PU PU -
    2-7/8 73.02 0.217 5.51 6.40 9.52 6.50 9.67 PNU PNU PNU PNU PNU
    0.276 7.01 7.80 11.61 7.90 11.76 - PNU PNU PNU PNU
    0.308 7.82 8.60 12.80 8.70 12.95 - PNU PNU PNU PNU
    0.340 8.64 9.35 13.91 9.45 14.06 - PU - PU -
    0.440 11.18 11.50 17.11 - - N PN - PN -
    3-1/2 88.90 0.216 5.49 7.70 11.46 - - PN PN PN PN -
    0.254 6.45 9.20 13.69 9.30 13.84 PNU PNU PNU PNU PNU
    0.289 7.34 10.20 15.19 - - PN PN PN PN -
    0.375 9.52 12.70 18.91 12.95 19.27 - PNU PNU PNU PNU
    4 101.60 0.226 5.74 9.50 14.14 - - PN PN PN PN -
    0.262 6.65 - - 11.00 16.37 PU PU PU PU -
    4-1/2 114.30 0.271 6.88 12.60 18.75 12.75 18.97 PNU PNU PNU PNU -

    * Premium connections are available on request. P - plain end, N - non-upset, E - external upset.

    API 5CT J55 Seamless CasingERW CasingAPI 5CT K55Seamless CasingAPI 5CT N80 Seamless CasingL80 ERW CasingP110 ERW CasingQ125 ERW CasingH40 ERW Casing
    Saudi Arabia
    23# 5.5" P110, 300 000ft, Carbon steel, no upset connection, 10 000# burst   3000 pcs
    45.5# 10.75", 80ksi, 300 000ft, Carbon steel, no upset connection, 10 000# burst  1500 pcs
    32# 8 5/8", 80ksi, 300 000ft, Carbon steel, no upset connection, 10 000# burst  1000 pcs

    Seamless casing tube without threaded and taper 273/260 mm x 3.0m
    i)O.D: 273mm      
    ii) I.D: 260mm         
    iii)Wall thickness: 6.3mm minimum
    iv)Suitable for ODEX drilling  240W-G2      
    v) Standard API 5CT
    vi)Connection of casing tube should be male and female type for smooth welding


    Nigeria
    API 5CT K55 PSL 1, Connection: BTC, Size:18 5/8”, Weight ppf: 87.5, OD(mm): 473.08, WT(mm): 11.05, Length(mtr): 10.36.11.8 Theoretical Weight (kg)/meter): 134.21, Quantity CBM/M3: 134.28, Weight/Ton: 78.13, Meters: 6000
    API 5CT K55 PSL 1, Connection: BTC, Size:18 5/8”, Weight ppf: 87.5, OD(mm): 473.08, WT(mm): 11.05 Length(mtr): 6.000 Theoretical Weight (kg)/meter): 2.69, Quantity CBM/M3: 134.28, Weight/Ton: 78.13, Meters: 12000

    Approximate length of 10000m
    Wire-warped screen type: pipe based
    Base pipe: Seamless carbon steel casing; OD 9 5/8” Wt 36 Lb/ft Grade K-55
    Perforation & pipe ends: 16mm diameter of hole (min. 16% open area) BTC acc to API 5B with pin &box thread protectors incl. safety ring (installed between screen jacket and base pipe)
    Screen jacket (with V-shape wire) : Grade AISI 304L, slot opening 0.015” ( +/- 0.002”), profile wire size 2.1*2.4mm, support rod 2.1*2.4mm, overall length 5.300 – 5.800 mm including both pin&box but excluding thread protector (+0mm/-50mm) Effective screen length 4.300-4.800(+/-mm)
    Approximate length of 30000m
    10 3/4 ” Casing ERW Carbon steel casing ASTM/API 5L Grade B bevelled end mills standard varnish length approximate 12m OD 273.1mm with end protector MTC as per EN 7.09 WT
    Approximate length of 4000m
    14" O.D. H48 lb/ft, Range II API Standard 5CT or 5L Casing , bevelled end casing.made of carbon steel by ERW process .The pipe itself shall be black coated with paint.The length of each pipe should not exceed 10 m. ASTM standard is acceptable


    Irap
    Pipe Diameter φ88.9mm, wall thickness 10.92 mm, length 12m, Steel grade:N80 yield strength Fy ≥550Mpa; Qty - 1075 nos


    United Arab Emirates
    Seamless API Pipe Casing ( 9-5/8" ) 36 LBS/FT J55 Thread BTC Length R3

    Casing 9-5/8" L80-1 / 11.99mm 47ppf BTC length 9.5-12.0m
    Casing 7" L80-1 /  10.36mm 29ppf BTC length 9.5-12.0m


    Libya
    Casing coupling 13-3/8" N80 12.19mm 68ppf BTC, the quantity 3000 pcs
    Casing coupling 9-5/8" L80-1 11.99mm 47ppf BTC, the quantity 3000 pcs
    Casing coupling 7" L80-1 10.36mm 29ppf BTC, the quantity 3000 pcs                                                                                                                                                                                                                                

    13.375" casing, 72#, P-110 Grade. Threaded and coupled. 

    Turkey
    Seamless tubing, size: 5-1/2",weight:20 PPF, grade:L80-Type 9CR 1 MO, PSL:1, thread type: premium 04 gas tight connection range 2, quantity: 15000 Mtr
    Seamless casing, size: 9-5/8", weight: 47 PPF, grade:L80-Type 9CR 1MO, PSL:1, thread type: premiumgas tight connection range 3, quantity: 34000 Mtr

    7" Casing pipes, 23 LB/FT, L80, BTC, R3, API 5CT quantity 20,000 ft
    5" Casing, R3, J55, 13 PPF, BTC, API 5 CT quantity 30,000 ft
    3 ½ tubing or 2 7/8" drill pipe quantity 20,000 ft


    Tunisia
    10-3/4" Casing, ERW Carbon Casing, API 5L, Grade B, beveled ends, mills’s standard varnish, Length approx.. 12 meter, OD 273.1 mm, with end protectors, Weight 31.23 LB/Ft, wall thickness 7.09 mm

    Casing, 13-3/8", BTC thread, Grade-K55, thickness 9.65mm for 9m, API5CT

Know more about this product price, catalogue, mill test certificate,  please inquiry to: sales@nan-steel.com

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