11.43-50.8 J55 Oil Casing, P110 Anti-Corrosion Casing J55 Deep Well Casing
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 m.t.
- Supply Capability:
- 1000 m.t./month
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Specification
Standard:
ASTM,API,GB
Technique:
Hot Rolled,Cold Rolled
Shape:
Round,LTZ
Surface Treatment:
Galvanized,Copper Coated
Steel Grade:
Q195
Certification:
ISO,API
Thickness:
5.21-16.13mm
Length:
R1-R3
Outer Diameter:
4 1/2 -20inch
Net Weight:
14.14-197.93kg/m
Petroleum Casing Product Information
1. Product Overview
J55 Steel Deep Well Casing, P110 High-Grade Drilling Casing
Longkailai petroleum casing is strictly manufactured in compliance with API 5CT standards, covering mainstream steel grades such as J55, N80, and P110. It is suitable for wellbore reinforcement and formation isolation in onshore oilfields, offshore platforms, and complex geological environments, ensuring lifecycle safety of oil and gas wells.
2. Technical Specifications
Size Range:
Outer diameter 114.3 mm (4.5") to 508 mm (20"), wall thickness 6.2-25.4 mm, tolerances conform to API 5CT standards (outer diameter ±0.5%, wall thickness ±10%).Mechanical Properties:
J55 Grade: Yield strength ≥379 MPa, tensile strength ≥517 MPa;
P110 Grade: Yield strength ≥758 MPa, tensile strength ≥965 MPa;
Collapse resistance: N80 Grade ≥80 MPa, P110 Grade ≥138 MPa (tested per ASTM A370).
Thread Performance:
API round thread (BTC) sealing pressure ≥20 MPa;
Premium connections (e.g., BGT2) helium leakage rate ≤1×10⁻⁶ cm³/s (tested per ISO 13679 CAL IV).
3. Chemical Composition (Example: L80 Grade)
| Content | 0.25% | 1.20% | 0.45% | 0.50% | 0.25% | 0.020% | 0.010% |
| Note: Cr-Mo alloy design enhances H₂S corrosion resistance (H₂S partial pressure ≤0.3 kPa). |
4. Application Scenarios
High-Temperature & High-Pressure Wells:
L80-13Cr material withstands 180°C and CO₂ partial pressure ≤1 MPa (per NORSOK M-001).Shale Gas Horizontal Wells:
TP140TT high-collapse casing with internal pressure resistance ≥105 MPa, compatible with multi-stage fracturing.Deepwater Offshore Wells:
9-5/8" casing passes 30 MPa external pressure test, suitable for 3,000-meter water depth.
5. Production Process
Material Smelting:
Electric Arc Furnace (EAF) + LF refining, sulfur/phosphorus ≤0.015%;
Continuous casting billet Φ180-400 mm, central segregation ≤Class C 1.0.Hot Rolling:
Three-roll retained mandrel mill, wall thickness uniformity ≤5%;
Online spray cooling, final rolling temperature 900±20°C.Heat Treatment:
Quenching (920°C water cooling) + Tempering (620°C air cooling), hardness 22-32 HRC;
Sour-service pipes use HWQ process, grain size ≥ASTM 7.Quality Inspection:
100% ultrasonic testing (UT) for longitudinal defects (sensitivity Φ1.6 mm flat-bottom hole);
Full-length hydrostatic test (50-100 MPa, holding ≥10 seconds);
Drift test with API drift mandrel (100% pass rate).
6. Case Studies
Middle East Oilfield Project:
Delivered 13-3/8" P110 casing for 4,500-meter well depth, collapse resistance 120 MPa.Sichuan Shale Gas Field:
7" TP140TT casing supports 30-stage fracturing, boosting single-well output by 25%.
Key Features
J55/P110 Casing: High-strength, corrosion-resistant, compliant with API 5CT.
TP140TT Grade: Optimized for shale gas fracturing with extreme pressure resistance.
Deepwater Compliance: Certified for 3,000-meter offshore operations.
- Q: How are steel pipes used in tunnel construction?
- Steel pipes are used in tunnel construction as structural elements to provide support and stability to the tunnels. They are commonly used in tunnel lining systems to create a strong and durable structure that can withstand the pressure and weight of the surrounding soil or rock. Steel pipes are also used for ventilation systems, drainage systems, and for carrying utilities such as water, gas, or electricity through the tunnel.
- Q: How do you solder purple copper plate and steel tube?
- When the copper and copper tube size is too large, argon welder welding, DC argon arc welding machine, of course, when DC argon arc welding welding belongs to welding, argon arc welding of brass with Wei Odin 204S welding, the argon arc welding wire for gas welding is not brass wire, this concept must be clear, the wire diameter of 2 80-120A, welding current parameters, if the copper thickness is relatively thick, with a red copper welding after welding preheating in advance.
- Q: Are steel pipes resistant to ultraviolet (UV) radiation?
- Ultraviolet (UV) radiation poses a threat to steel pipes as they do not possess inherent resistance. This type of radiation has the potential to induce degradation and discoloration in various materials, including steel. However, the extent of harm inflicted depends on several factors, including steel type, duration and intensity of UV exposure, and the presence of protective coatings or finishes on the pipes. Generally, uncoated steel pipes are more vulnerable to UV damage compared to those treated with protective coatings or finishes. Coatings such as epoxy or polyethylene act as a shield against UV radiation, effectively preventing steel degradation and discoloration. Hence, it becomes crucial to consider the specific application and environment when selecting steel pipes and implementing suitable protective measures to ensure their durability and performance.
- Q: How are steel pipes used in the manufacturing of railways?
- The manufacturing of railways involves the versatile use of steel pipes. In the context of railway construction, steel pipes serve as a fundamental component for the creation of rail tracks. These pipes are joined together through welding to form robust and lengthy tracks capable of withstanding the weight and pressure exerted by passing trains. Moreover, steel pipes find application in the manufacturing of railway bridges and tunnels. These structures necessitate the utilization of strong and resilient materials in order to guarantee the safety and stability of the railway system. Steel pipes are frequently employed in the construction of supporting structures and piers that uphold the bridges. Additionally, they provide structural support and stability for tunnels. Furthermore, steel pipes contribute to the production of various railway components and equipment. For instance, they are used in the fabrication of railway signaling systems responsible for managing train movement and ensuring safety. These pipes are commonly utilized to encase and safeguard the electrical wiring and other components of the signaling systems. In addition, steel pipes play a significant role in the manufacturing of railway carriages and locomotives. They serve as the framework and structure of the train, imparting strength and stability. Furthermore, steel pipes are utilized for diverse purposes such as creating air conditioning systems, brake systems, and fuel delivery systems within the train. Overall, steel pipes occupy a pivotal position in the manufacturing of railways. They are indispensable for the construction of rail tracks, bridges, tunnels, and a variety of railway components and equipment. The strength and durability of steel make it an ideal material for ensuring the safety and efficiency of railway systems.
- Q: How do you calculate the buoyancy of submerged steel pipes?
- In order to calculate the buoyancy of submerged steel pipes, one must take into account Archimedes' buoyancy principle. According to this principle, the force exerted on an object submerged in a fluid is equal to the weight of the fluid displaced by the object. To calculate the buoyant force, it is necessary to determine the volume of fluid displaced by the submerged steel pipe. This can be done by multiplying the cross-sectional area of the pipe by the length of the submerged portion. Next, it is important to ascertain the density of the fluid in which the steel pipe is submerged. This information can be obtained from the properties of the fluid or by referring to known values. Once the volume and density of the fluid have been determined, the weight of the fluid displaced by the submerged pipe can be calculated using the equation: weight = volume × density × acceleration due to gravity. Finally, the buoyant force can be calculated by multiplying the weight of the displaced fluid by the acceleration due to gravity. This will yield the upward force exerted on the submerged steel pipe by the fluid. When accurately calculating the buoyancy of submerged steel pipes, it is crucial to take into account additional factors, such as the weight of the pipe itself, any attached equipment or coatings, and the specific conditions of the fluid in which it is submerged.
- Q: What are the different types of pipe coatings used for corrosion protection?
- There are several different types of pipe coatings used for corrosion protection. These coatings are applied to the exterior surface of pipes to prevent or delay corrosion, ensuring the longevity and integrity of the pipes. Some of the commonly used pipe coatings for corrosion protection include: 1. Fusion-Bonded Epoxy (FBE) Coatings: FBE coatings are widely used for corrosion protection due to their excellent adhesion and resistance to chemicals, moisture, and abrasion. These coatings are applied by heating the pipe and spraying it with epoxy powder, which then melts and forms a protective layer upon cooling. 2. Polyethylene (PE) Coatings: PE coatings are known for their flexibility and resistance to impact and chemicals. These coatings are typically applied by extrusion or wrapping methods and provide excellent resistance against water, soil, and other corrosive substances. 3. Polyurethane (PU) Coatings: PU coatings offer good resistance to chemicals, moisture, and mechanical damage. They are commonly used for underground pipelines and are applied by spraying or brush coating methods. 4. Coal-Tar Enamel Coatings: Coal-tar enamel coatings are suitable for protecting pipes exposed to highly corrosive environments such as marine conditions or underground applications. They are typically applied by hot or cold wrapping methods and provide excellent resistance to water, acids, and alkalis. 5. Metallic Coatings: Metallic coatings such as zinc, aluminum, or zinc-aluminum alloys are often used as sacrificial coatings to protect the underlying steel pipes. These coatings corrode preferentially, sacrificing themselves to protect the pipe from corrosion. 6. Asphalt Coatings: Asphalt coatings provide a robust barrier against moisture, chemicals, and soil. They are typically applied by hot or cold wrapping methods and are commonly used for underground pipelines. It is important to consider factors such as the specific environment, temperature, and expected lifespan of the pipes when selecting the appropriate type of pipe coating for corrosion protection.
- Q: What are the advantages of using steel pipes in plumbing systems?
- There are several advantages to using steel pipes in plumbing systems. Firstly, steel pipes are highly durable and resistant to corrosion, making them ideal for carrying water and other fluids. They can withstand high pressure and extreme temperatures, ensuring long-term reliability. Additionally, steel pipes have a smooth interior surface, resulting in less friction and improved flow efficiency. They are also fire resistant, reducing the risk of accidents. Moreover, steel pipes are eco-friendly as they can be recycled, promoting sustainability. Overall, steel pipes offer strength, longevity, and reliability, making them a preferred choice in plumbing systems.
- Q: What is ND steel pipe?
- ND steel also has the ability to resist chloride ion corrosion. ND steel pipe, the main reference indicators (70 degrees Celsius, 50%H2SO4 solution immersion 24 hours), and carbon steel, Japan imported similar steel, stainless steel corrosion resistance compared to higher than these steel grades. Products by domestic refineries and manufacturing units after the use of widely acclaimed, and achieved good results.
- Q: How are steel pipes used in plumbing systems?
- Steel pipes are commonly used in plumbing systems for various purposes such as transporting water and gas. They are used to create a network of pipes that carry water from the main supply line to different fixtures like sinks, toilets, and showers. Steel pipes are durable, resistant to corrosion, and have high pressure and temperature tolerance, making them suitable for both residential and commercial plumbing systems.
- Q: What are the common methods for cleaning the inner surface of steel pipes?
- Some common methods for cleaning the inner surface of steel pipes include chemical cleaning, mechanical cleaning, and high-pressure water jetting. Chemical cleaning involves using solvents or acids to dissolve and remove any contaminants or residue. Mechanical cleaning involves using tools such as wire brushes, scrapers, or pigs to physically scrub and scrape the inner surface of the pipes. High-pressure water jetting involves using a pressurized stream of water to blast away dirt, scale, or other deposits. These methods can be used individually or in combination, depending on the specific cleaning requirements and the condition of the pipes.
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11.43-50.8 J55 Oil Casing, P110 Anti-Corrosion Casing J55 Deep Well Casing
- Ref Price:
-
- Loading Port:
- Tianjin
- Payment Terms:
- TT OR LC
- Min Order Qty:
- 1 m.t.
- Supply Capability:
- 1000 m.t./month
OKorder Service Pledge
Quality Product, Order Online Tracking, Timely Delivery
OKorder Financial Service
Credit Rating, Credit Services, Credit Purchasing
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