api-5ct-tubing
  • api-5ct-tubing
  • api-5ct-tubing

API 5Ct Tubing

ParameterDetails
Product NameAPI 5CT Tubing
Material GradesJ55, K55, N80, L80, C90, T95, P110, Q125
Outer Diameter4-1/2″ to 20″ (114.3mm – 508mm)
Wall Thickness1.0mm – 30mm
StandardAPI 5CT, ISO 11960
Manufacturing ProcessSeamless / ERW / LSAW
End FinishPlain End, Threaded & Coupled, Upset Ends
ApplicationOil & Gas Drilling, Well Casing, Hydrocarbon Extraction
CoatingBare, Black Coated, Varnished, Galvanized, 3LPE, FBE
Thread TypesSTC (Short Thread), LTC (Long Thread), BTC (Buttress)
CertificationAPI 5CT, ISO 9001, NACE MR0175, CE
Length RangeR1: 4.88-7.62m, R2: 7.62-10.36m, R3: 10.36-14.63m
Additional ServicesThreading, Coupling, Beveling, Heat Treatment
Category:

Description

What is API 5Ct Tubing?

API 5CT tubing is a seamless or welded steel pipe used in oil and gas wells. It is inserted into the wellbore to facilitate the extraction of hydrocarbons. Unlike casing, which is used to protect the well from collapse and external pressures, tubing allows for the efficient flow of oil and gas to the surface.

API 5CT Casing Dimensions

DN O. D. Weight W. T. End Machining Form
Steel Grade
Inch mm lb/ft kg/m Inch mm H40 J55 L80 N80 C90 P110
K55 T95
4 1/2 4.5 114.3 9.5 14.14 0.205 5.21 PS PS – – – –
10.5 15.63 0.224 5.69 – PSB – – – –
11.6 17.26 0.25 6.35 – PSLB PLB PLB PLB PLB
13.5 20.09 0.29 7.37 – – PLB PLB PLB PLB
15.1 22.47 0.337 9.56 – – – – – PLB
5 5 127 11.5 17.11 0.22 5.59 – PS – – – –
13 19.35 0.253 6.43 – PSLB – – – –
15 22.32 0.296 7.52 – PSLB PLB PLB PLBE PLB
18 26.79 0.362 9.19 – – PLB PLB PLBE PLB
21.4 31.85 0.437 11.1 – – PLB PLB PLB PLB
23.2 34.53 0.478 12.14 – – – – PLB –
24.1 35.86 0.5 12.7 – – – – PLB –
5 1/2 5.5 139.7 14 20.83 0.244 6.2 PS PS – – – –
15.5 23.07 0.275 6.98 – PSLB – – – –
17 25.3 0.304 7.72 – PSLB PLB PLB PLBE PLB
20 29.76 0.361 9.17 – – PLB PLB PLBE PLB
23 34.23 0.415 10.54 – – PLB PLB PLBE PLB
26.8 39.88 0.5 12.7 – – – – – –
29.7 44.2 0.562 14.27 – – – – – –
32.6 48.51 0.625 15.88 – – – – – –
35.3 52.53 0.687 17.45 – – – – – –
38 56.55 0.75 19.05 – – – – – –
40.5 60.27 0.812 20.62 – – – – – –
43.1 64.14 0.875 22.22 – – – – – –
6 5/8 6.625 168.28 20 29.76 0.288 7.32 PS PSLB – – – –
24 35.72 0.352 8.94 – PSLB PLB PLB PLBE PLB
28 41.67 0.417 10.59 – – PLB PLB PLBE PLB
32 47.62 0.475 12.06 – – PLB PLB PLBE PLB
7 7 177.8 17 25.3 0.231 5.87 PS – – – – –
20 29.76 0.272 6.91 PS PS – – – –
23 34.23 0.317 8.05 – PSLB PLB PLB PLBE –
26 38.69 0.362 9.19 – PSLB PLB PLB PLBE PLB
29 43.16 0.408 10.36 – – PLB PLB PLBE PLB
32 47.62 0.453 11.51 – – PLB PLB PLBE PLB
35 52.09 0.498 12.65 – – PLB PLB PLBE PLB
38 56.55 0.54 13.72 – – PLB PLB PLBE PLB
42.7 63.54 0.625 15.88 – – – – – –
46.4 69.05 0.687 17.45 – – – – – –
50.1 74.56 0.75 19.05 – – – – – –
53.6 79.77 0.812 20.62 – – – – – –
57.1 84.97 0.875 22.22 – – – – – –
7 5/8 7.625 193.68 24 35.72 0.3 7.62 PS – – – – –
26.4 39.29 0.328 8.33 – PSLB PLB PLB PLBE PLB
29.7 44.2 0.375 9.52 – – PLB PLB PLBE PLB
33.7 50.15 0.43 10.92 – – PLB PLB PLBE PLB
39 58.05 0.5 12.7 – – PLB PLB PLBE PLB
42.8 63.69 0.562 14.27 – – PLB PLB PLB PLB
45.3 67.41 0.595 15.11 – – PLB PLB PLB PLB
47.1 70.09 0.625 15.88 – – PLB PLB PLB PLB
51.2 76.19 0.687 17.45 – – – – – –
55.3 80.3 0.75 19.05 – – – – – –
8 5/8 8.625 219.08 24 35.72 0.264 6.71 – PS – – – –
28 41.62 0.304 7.72 PS – – – – –
32 47.62 0.352 8.94 PS PSLB – – – –
36 53.57 0.4 10.16 – PSLB PLB PLB PLBE PLB
40 59.53 0.45 11.43 – – PLB PLB PLBE PLB
44 65.48 0.5 12.7 – – PLB PLB PLBE PLB
49 72.92 0.557 14.15 – – PLB PLB PLBE PLB
9 5/8 9.625 244.48 32.3 48.07 0.312 7.92 PS – – – – –
36 53.57 0.352 8.94 PS PSLB – – – –
40 59.53 0.395 10.03 – PSLB PLB PLB PLBE –
43.5 64.73 0.435 11.05 – – PLB PLB PLBE PLB
47 69.94 0.472 11.99 – – PLB PLB PLBE PLB
53.5 79.62 0.545 13.84 – – PLB PLB PLBE PLB
58.4 86.91 0.595 15.11 – – PLB PLB PLB PLB
59.4 88.4 0.609 15.47 – – – – – –
64.9 96.58 0.672 17.07 – – – – – –
70.3 104.62 0.734 18.64 – – – – – –
75.6 112.5 0.797 20.24 – – – – – –
10 3/4 10.75 273.05 32.75 48.74 0.279 7.09 PS – – – – –
40.5 60.27 0.35 8.89 PS PSB – – – –
15.5 67.71 0.4 10.16 – PSB – – – –
51 75.9 0.45 11.43 – PSB PSB PSB PSBE PSB
55.5 82.59 0.495 12.57 – – PSB PSB PSBE PSB
60.7 90.33 0.545 13.84 – – – – PSBE PSB
65.7 97.77 0.595 15.11 – – – – PSB PSB
73.2 108.93 0.672 17.07 – – – – – –
79.2 117.86 0.734 18.64 – – – – – –
85.3 126.94 0.797 20.24 – – – – – –
11 3/4 11.75 298.45 42 62.5 0.333 8.46 PS – – – – –
47 69.94 0.375 20.24 – – – – – –
54 80.36 0.435 8.46 – – – – – –
60 89.29 0.489 9.53 – – – – – –
65 96.73 0.534 11.05 – – – – – –
71 105.66 0.582 14.42 – – – – – –
13 3/8 13.375 339.73 48 71.43 0.33 8.38 PS – – – – –
54.5 81.1 0.38 9.65 – PSB – – – –
61 90.78 0.43 10.92 – PSB – – – –
68 101.19 0.48 12.19 – PSB PSB PSB PSB PSB
72 107.15 0.514 13.06 – – PSB PSB PSB PSB
16 16 406.4 65 96.73 0.375 9.53 PS – – – – –
75 111.61 0.438 11.13 – PSB – – – –
84 125.01 0.495 12.57 – PSB – – – –
109 162.21 0.656 16.66 – P P P – P
18 5/8 18.625 473.08 87.5 130.21 0.435 11.05 PS PSB – – – –
20 20 508 94 139.89 0.438 11.13 PSL PSLB – – – –
106.5 158.49 0.5 12.7 – PSLB – – – –
133 197.93 0.635 16.13 – PSLB – – – –

API 5CT J55, K55, N80 type 1 and N80Q, L80, C90, T95, P110, and Q125 Chemical Composition

Grade C (Max) Mn P (Max) S (Max) Si (Max) Mo (Max) Cr (Max) Ni (Max) Cu (Max) V (Max)
H40 0.22 0.30-1.00 0.03 0.03 0.45 – – – – –
J55 0.26 0.30-1.35 0.03 0.03 0.45 – – – – –
K55 0.26 0.30-1.35 0.03 0.03 0.45 – – – – –
N80 0.34 0.30-1.50 0.03 0.03 0.45 0.2 0.5 0.5 0.5 0.08
L80 0.43 0.30-1.50 0.03 0.03 0.45 0.25 0.75 0.75 0.35 0.08
C90 0.45 0.30-1.50 0.03 0.03 0.45 0.35 1 0.5 0.5 0.1
T95 0.45 0.30-1.50 0.03 0.03 0.45 0.35 1 0.5 0.5 0.1
P110 0.4 0.30-1.50 0.03 0.03 0.45 0.35 1 0.5 0.5 0.1
Q125 0.5 0.30-1.50 0.03 0.03 0.45 0.5 1.5 0.5 0.5 0.1

API 5CT J55, K55, N80 type 1 and N80Q, L80, C90, T95, P110, and Q125 Mechanical Properties

Grade Yield Strength (MPa) Tensile Strength (MPa) Elongation (%)
H40 ≥276 414-552 ≥21
J55 ≥379 517-758 ≥19
K55 ≥379 517-758 ≥19
N80 ≥552 689-862 ≥15
L80 ≥552 655-880 ≥15
C90 ≥621 689-862 ≥10
T95 ≥655 724-896 ≥10
P110 ≥758 862-1034 ≥10
Q125 ≥862 931-1207 ≥10

API 5CT Tubing Specifications

API 5CT tubing adheres to strict specifications to ensure reliability, durability, and performance. Key specifications include:

  • Outer Diameter (OD): Typically ranges from 1.66 inches (42.16 mm) to 4.5 inches (114.3 mm).
  • Wall Thickness: Varies based on well conditions and pressure requirements.
  • Length: Tubing is available in different lengths categorized as:
    • R1: 4.88 – 7.62 meters
    • R2: 7.62 – 10.36 meters
    • R3: 10.36 – 14.63 meters
  • Manufacturing Process: Seamless (hot-rolled or cold-drawn) or Electric Resistance Welded (ERW).
  • Connections: API round thread, buttress thread, and premium connections for enhanced sealing performance.

API 5CT Tubing Grades

API 5CT tubing is classified into different grades based on mechanical properties and chemical composition. Common grades include:

  1. H40 – General-purpose tubing with lower mechanical strength.
  2. J55 – Widely used for shallow wells with moderate pressure.
  3. K55 – Similar to J55 but with higher yield strength.
  4. N80 (N80-1 and N80-Q) – Suitable for deeper wells, offering improved resistance to collapse.
  5. L80 – Used in corrosive environments; available in L80-1, L80-9Cr, and L80-13Cr for different corrosion resistance levels.
  6. C90 – Ideal for sour service applications.
  7. T95 – Offers enhanced resistance to sulfide stress cracking.
  8. P110 – Designed for high-pressure wells.
  9. Q125 – High-strength tubing used in deep and ultra-deep wells.

Manufacturing Process

The production of API 5CT tubing involves several steps to ensure its mechanical properties and durability. The process includes:

  1. Raw Material Selection: High-quality steel billets or coils are selected based on required chemical composition.
  2. Heating and Piercing: The billets are heated and pierced to create a hollow tube.
  3. Rolling and Sizing: The tube is rolled to achieve the required diameter and wall thickness.
  4. Heat Treatment: Normalizing, quenching, and tempering processes are applied to enhance mechanical properties.
  5. Testing and Inspection: Non-destructive tests, hydrostatic testing, and dimensional inspections are conducted to ensure compliance with API standards.
  6. Threading and Coupling: The tubing is threaded according to API or premium specifications for proper well connection.
  7. Final Coating and Packaging: Tubing is coated with anti-corrosion material and packaged for transportation

Advantages

API 5CT tubing offers several benefits to the oil and gas industry:

  • High Strength and Durability: Designed to withstand high-pressure and corrosive environments.
  • Standardized Specifications: Ensures compatibility and interchangeability.
  • Enhanced Corrosion Resistance: Special coatings and alloy grades resist corrosion in harsh conditions.
  • Improved Well Efficiency: Facilitates smooth hydrocarbon extraction.
  • Long Service Life: Engineered for extended operational lifespan.

Applications

API 5CT tubing is used in various oil and gas operations, including:

  • Production Wells: Ensures the smooth flow of oil and gas from the reservoir to the surface.
  • Injection Wells: Used for water, gas, or steam injection to maintain reservoir pressure.
  • Geothermal Wells: Withstands high temperatures in geothermal energy extraction.
  • Enhanced Oil Recovery (EOR) Operations: Supports secondary and tertiary recovery techniques.

Reviews

There are no reviews yet.

Be the first to review “API 5Ct Tubing”

Your email address will not be published. Required fields are marked *


The reCAPTCHA verification period has expired. Please reload the page.

Related products