API Oil Tubing

API OIL TUBING

In the dynamic and challenging realm of the oil and gas industry, reliable and high - performance equipment is the cornerstone of successful operations. OAK offers top-notch API oil tubing that has been trusted by numerous oil fields and companies worldwide.

1. Basic Parameters

1.1 Dimensions

Outer Diameter: OAK API oil tubing is available in a wide range of outer diameters, typically starting from 2-3/8 inches (60.32 mm) up to 4-1/2 inches (114.3 mm). This diverse selection allows for seamless integration into various wellbore designs, whether it's a shallow well or a deep - seated reservoir.

Wall Thickness: The wall thickness of our tubing varies according to the specific grade and the operational requirements of the well. Thicknesses can range from as low as 0.167 inches (4.24 mm) to 0.440 inches (11.18 mm). This flexibility ensures that the tubing can withstand the internal and external pressures exerted during oil and gas production.

Length: We offer tubing in three standard length ranges. Range 1 is 16-25 feet, Range 2 is 25-34 feet, and Range 3 is 34-48 feet. This enables operators to choose the most suitable length for their well construction and reduces waste during installation.

1.2 Grades

J55: A lower-grade steel that is ideal for shallow wells where the pressure and mechanical loads are relatively moderate. It provides a good balance between cost-effectiveness and performance.

N80 and L80: Medium-strength grades, these are suitable for deeper wells with higher pressure and temperature conditions. They offer enhanced strength and durability, making them reliable for extended periods of operation.

P110: This high-strength tubing grade is designed for extremely deep and high - pressure wells. It can withstand the harshest environments, including those with high - temperature conditions or high CO₂ and H₂S concentrations.

1.3 Thread Connections

Non-Upset (NU): The NU thread type is designed for easy connection and disconnection. This makes it highly suitable for environments where frequent maintenance or changes are required. The absence of a shoulder allows for a straight connection, facilitating quick installation and removal.

External Upset (EU): With an upset on the external diameter, EU connections provide increased strength. They are particularly suitable for higher - pressure applications, such as in deep wells where additional load - bearing capacity is crucial.

Integral Joint (IJ): The IJ connection has the thread as part of the tubing body, providing a strong and continuous joint. This design minimizes the risk of leaks and mechanical failure, making it ideal for critical applications where integrity is of utmost importance.

2. Performance

2.1 High Pressure Resistance

OAK API oil tubing is engineered to withstand extremely high pressures. Whether it's the internal pressure exerted by the flowing oil and gas or the external hydrostatic pressure from the surrounding rock formations, our tubing can maintain its structural integrity. This high - pressure resistance ensures the safe and efficient transfer of hydrocarbons from the reservoir to the surface.

2.2 Corrosion Resistance

In the oil and gas production environment, corrosion is a constant threat. Our tubing is made from high - quality steels that offer excellent corrosion resistance. For wells with highly corrosive environments, we also provide tubing made from corrosion-resistant alloys (CRAs), such as stainless steel or nickel - based alloys. This helps to extend the lifespan of the tubing and reduces the need for frequent replacements, ultimately saving costs.

2.3 Mechanical Strength

The tubing is designed to resist various mechanical loads, including tension, compression, and bending. This mechanical strength allows it to endure the rigors of installation, production, and workover operations. It can also withstand the vibrations and impacts associated with the movement of pumps and other equipment in the wellbore.

3. Application Scenarios

3.1 Production Tubing

The primary application of OAK API oil tubing is as production tubing. Placed inside the well casing, it serves as the conduit for transporting oil or gas from the reservoir to the surface. The appropriate grade and size of tubing are carefully selected based on the well depth, pressure, and temperature to ensure the safe and efficient extraction of hydrocarbons.

3.2 Injection Wells

Our tubing is also widely used in injection wells, where fluids such as water, steam, or chemicals are injected into the reservoir. This is done to enhance oil recovery or manage reservoir pressure. The tubing must resist both the internal pressure of the injected fluids and the external forces from the surrounding rock, as well as corrosion from the injected substances.

3.3 Gas Lift Systems

In wells where the natural reservoir pressure is insufficient to bring hydrocarbons to the surface, OAK API oil tubing is used in gas lift systems. Gas is injected down the tubing string to lighten the weight of the fluid column, facilitating the flow of oil or gas to the surface. The tubing's ability to withstand the combined effects of gas injection and fluid flow is crucial in these systems.

3.4 Well Maintenance

During well maintenance or workover operations, our tubing can be used to circulate fluids and chemicals. This is essential for cleaning the wellbore, performing pressure management, or carrying out other maintenance tasks. The tubing's durability ensures that it can withstand the repeated use and harsh chemical environments associated with well maintenance.

4. Applied Oil Fields and Companies

OAK API oil tubing has been successfully applied in numerous oil fields across the globe. In the Permian Basin in the United States, one of the largest oil - producing regions in the world, many oil companies rely on OAK tubing for their production operations. The tubing's performance in high - pressure and high - temperature conditions has made it a preferred choice in this region.

In the North Sea oil fields, which are known for their challenging offshore environment, OAK API oil tubing has also proven its reliability. The corrosion - resistant properties of our tubing are particularly valuable in the salty and harsh marine environment, ensuring long - term performance and minimizing maintenance requirements.

Among the companies that have chosen OAK API oil tubing are major international oil and gas corporations such as ExxonMobil, BP, and Shell. These companies recognize the importance of high - quality tubing in their operations and have trusted OAK to provide them with the products they need to ensure safe and efficient oil and gas production.

In conclusion, OAK API oil tubing offers a combination of excellent basic parameters, outstanding performance, and wide - ranging application scenarios. Its use in major oil fields and by leading companies is a testament to its quality and reliability. Whether it's a small - scale onshore operation or a large - scale offshore project, OAK API oil tubing is the ideal choice for the oil and gas industry.

If you have a need for API oil tubing, don't hesitate to get in touch with the OAK team for high-quality products and technical support.