API 5CT Oil Tubing
- Grade: H40, J55, K55, L80, L80-13Cr, L80-9Cr, N80-1, N80Q, P110
- O.D: 1.050″-4 1/2″
- Length: R1, R2, R3
- Connetion: EU, NU, IJ, Premium Connection (VAM TOP, NEW VAM, PH-6)
API 5CT Oil Tubing
API 5CT Oil Tubing is essential for the oil and gas industry, providing reliable performance and durability in demanding extraction environments. Manufactured to meet the stringent API 5CT standards, this tubing ensures safe and efficient transportation of oil and gas from the wellbore to the surface. Its high strength, corrosion resistance, and precision manufacturing make it ideal for both onshore and offshore applications. Learn more about the benefits of API 5CT Oil Tubing to improve the efficiency and safety of your oil and gas operations.
Chemical Composition of API 5CT Oil Tubing
| 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 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 |
| 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 | – | 1.9 | – | – | – | – | – | – | 0.03 | 0.03 | 0.45 | |
| 2 | M65 | – | – | – | – | – | – | – | – | – | – | – | 0.03 | 0.03 | – |
| L80 | 1 | – | 0.43 a | – | 1.9 | – | – | – | – | 0.25 | 0.35 | 0.03 | 0.03 | 0.45 | |
| L80 | 9Cr | – | 0.15 | 0.3 | 0.6 | 0.9 | 1.1 | 8 | 10 | 0.5 | 0.25 | 0.02 | 0.01 | 1 | |
| L80 | 13Cr | 0.15 | 0.22 | 0.25 | 1 | – | – | 12 | 14 | 0.5 | 0.25 | 0.02 | 0.01 | 1 | |
| C90 | 1 | – | 0.35 | – | 1.2 | 0.25 | 0.85 | – | 1.5 | 0.99 | – | 0.02 | 0.01 | – | |
| T95 | 1 | – | 0.35 | – | 1.2 | 0.25 | 0.85 | 0.4 | 1.5 | 0.99 | – | 0.02 | 0.01 | – | |
| C110 | – | – | 0.35 | – | 1.2 | 0.25 | 1 | 0.4 | 1.5 | 0.99 | – | 0.02 | 0.005 | – | |
| 3 | P110 | – | – | – | – | – | – | – | – | – | – | – | 0.030 | 0.030 | – |
| 4 | Q125 | 1 | – | 0.35 | 1.35 | – | 0.85 | – | 1.5 | 0.99 | – | 0.02 | 0.01 | – | |
Mechanical Properties of API 5CT Oil Tubing
| Group | Grade | Type | Total elongation under load % | Yield strength (Mpa) | Tensile strength (Mpa) | Hardness max. | Specified wall thickness | Allowable hardness variation | ||
| min | max | min. | HRC | HBW | mm | HRC | ||||
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 |
| 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 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 |
3.0 4.0 5.0 6.0 | |
| T95 | 1 | 0.5 | 655 | 758 | 724 | 25.4 | 255 | ≤ 12.70 12.71 to 19.04 19.05 to 25.39 ≥ 25.40 |
3.0 4.0 5.0 6.0 | |
| C110 | – | 0.7 | 758 | 828 | 793 | 30 | 286 | ≤ 12.70 12.71 to 19.0 19.05 to 25.39 ≥ 25.40 |
3.0 4.0 5.0 6.0 | |
| 3 | P110 | – | 0.6 | 758 | 965 | 862 | – | – | – | – |
| 4 | Q125 | 1 | 0.65 | 862 | 1034 | 931 | – | – | ≤ 12.70 12.71 to 19.04 ≥ 19.05 |
3.0 4.0 5.0 |
Specifications
| Standard | API 5CT Oil Tubing |
| Steel Grade | H40, J55, K55, N80, L80, C90, T95, P110, Q125, C75, and R95 |
| Group | 1, 2, 3, 4 |
| Casing Pipe Size | OD: 1.050″-4 1/2″ (26.67 – 114.3mm) |
| Casing Pipe Length | 1. Range 1 (R1): Length: 6.10 to 7.32 meters (20 to 24 feet) 2. Range 2 (R2): Length: 8.53 to 9.75 meters (28 to 32 feet) 3. Range 3 (R3): Length: 11.58 to 12.80 meters (38 to 42 feet) |
| Ends Connections | STC, LTC, BTC, Premium Connection (VAM TOP, NEW VAM, PH-6) |
| Packing | Packed in bundles with steel strapping, protective end caps, marked with relevant information, coated with rust preventative oil, wrapped in waterproof material for export, and often placed in wooden crates or pallets for secure transportation. |
| Section Shape | Round |
| Brand | Approved Manufacturer List (AML), or Country of Origin restrictions |
| Place of Origin | Made in China |
| MOQ | 25 Tons/Size |
| Transportation | Land transportation by truck or train, sea transportation by container ship or bulk ship. |
Applications of API 5CT Oil Tubing
Production Tubing:
Oil and Gas Transport: Tubing transports hydrocarbons from the reservoir to the surface. It is placed inside the casing and provides a conduit for oil and gas.
Flow Control: Tubing helps manage and control the flow of oil and gas during production.
Well Completion:
Completion String: Tubing is a crucial component of the completion string, ensuring the well is ready for production after drilling.
Downhole Equipment Installation: It facilitates the installation of various downhole tools and equipment like packers, safety valves, and pumps.
Well Intervention:
Workovers: During well intervention or workover operations, tubing can be pulled and replaced to maintain or enhance well productivity.
Stimulation Operations: Tubing is used to convey stimulation fluids (e.g., acids or fracturing fluids) to the wellbore to enhance production.
Artificial Lift:
Pump Installation: Tubing provides a pathway for artificial lift systems like rod pumps, electric submersible pumps (ESPs), and gas lift mandrels to enhance oil recovery from the reservoir.
Pressure Maintenance: Tubing helps maintain the necessary pressure to lift fluids to the surface in wells that do not flow naturally.
Enhanced Oil Recovery (EOR):
Chemical Injection: Tubing is used to inject chemicals, steam, or gases into the reservoir to enhance oil recovery.
Thermal Recovery: In thermal recovery methods like steam flooding or cyclic steam stimulation, tubing conveys steam to the wellbore to reduce the viscosity of heavy crude oil.
Corrosion and Erosion Protection:
Corrosion Resistant Tubing: Special coatings or materials (e.g., stainless steel, CRA) are used for tubing in corrosive environments to protect against corrosion and extend the lifespan of the well.
Erosion Resistance: Tubing protects against erosion caused by the high velocity of produced fluids, ensuring the integrity of the production string.
Geothermal Wells:
Heat Extraction: In geothermal applications, tubing is used to transport heated fluids from geothermal reservoirs to the surface for power generation.
Carbon Capture and Storage (CCS):
CO2 Injection: Tubing is used in wells that inject CO2 into underground formations for carbon sequestration, ensuring safe and efficient transport of CO2.
Monitoring and Data Collection:
Sensor Deployment: Tubing allows for the deployment of sensors and monitoring equipment to collect data on well conditions, reservoir pressure, temperature, and flow rates.
Wireline Operations: Tubing supports wireline operations for well logging and data acquisition.
Water Injection Wells:
Pressure Maintenance: Tubing is used in water injection wells to inject water into the reservoir, maintaining pressure and enhancing oil recovery.
Produced Water Disposal: It is also used to dispose of produced water safely by injecting it into designated disposal zones.
