Drilling～Production

• Drilling
• Weight reductions

Since oil well pipes for mining are exposed to very harsh environments, NIPPON STEEL has developed a super-high-strength high-alloy tubing excellent in corrosion resistance.
In addition, we have improved the production efficiency of natural gas and established a production technology for a large-diameter long-size high-alloy tubing that reduces the gas field development cost.

• Drilling
• Weight reductions

Gas-tightnesst connections without damage under harsh environments is required. VAM™21, which shows stable performance even in natural gas fields of great depth, has been used for development of the North Sea gas field. It is highly acclaimed as the world's highest-level premium connections.

• Drilling
• Weight reductions

It is the world-first sour-resistant tubing and casing with a maximum strength of 125 ksi class (yield strength of 862 Mpa class) and was implemented by NIPPON STEEL in 2003. It has enabled development of a high-corrosion-resistance well of 4,000 to 6,000 meters class, which has not been conventionally achieved.

• Drilling
• Reduced life-cycle costs, Shortening of lead times, Reduction in manufacturing costs

It is a joint technology that has enabled gas-tightness without using thread compounds, normally used at connections, by forming a solid film at the inner surface of the thread and the pipe end thread. This has eliminated the need for cleaning and application of grease, and enabled the development of clean oil/gas that does not discharge environmentally hazardous substances such as lead or zinc contained in thread compounds.

• Jack Up Rig
• Weight reductions

The jack-up rig is a drilling system that places the legs on the seabed during mining, lifts the platform to a height not affected by waves, lowers the platform to sea level, floats it for movement, and tows it with the legs lifted. Since the legs support a very large weight, ultra-thick high-strength steel is used.

• Jack Up Rig
• Plat Form
• Expansion of the development area, Weight reductions

Offshore structures that produce oil/gas require high safety because operators live there for production activity. Along with change of the development region, use of high-tensile-strength steel for large-sized refining equipment, and use of low-temperature material for production in cold regions has increased. With supply of steel materials satisfying these requirements, we continue to support the oil/gas fields in the world.

• Plat Form
• Shortening of lead times, Reduction in manufacturing costs

In the oil-refining process, operating conditions tend to become high temperature and high pressure to improve reaction efficiency. Ultra-thick heavy steel plate, which is excellent in high-temperature performance for various reaction vessels used in refineries, has been used.

• Plat Form
• Expansion of the development area

High safety against fracture is required for members of ocean structures even under super-cold environments. To meet these needs, we have developed low-temperature-toughness H-shaped steel for ocean structures that can keep sufficient toughness up to -40°C. It has already been used for multiple projects.

• Plat Form
• Expansion of the development area

With a constant beam height and beam width, the design was simplified and efficient processing was achieved. With a number of size selections and thin webs, steel weight can be reduced further than normal H-shaped steel. A size of 1,000 mm maximum in beam height and 400 mm maximum in beam width is available. This can be used for large structures.

NIPPON STEEL Engineering has a number of experiences in design, machining, and construction of platforms for oil and gas projects. We have a proven record of 40 years or more mainly around Southeast Asia, and we have accumulated platform construction technology and know-how under harsh environments.

The NIPPON STEEL Group has established a system to not only develop steel material but also assist the construction field including construction of subsea pipelines. NIPPON STEEL Engineering has made successful achievements for a number of constructions using the Derrick Lay Barges, Kuroshio and Kuroshio 2, which have a high-performance function of laying subsea pipeline.

• Under Sea
• Expansion of the development area, Weight reductions, Reduced life-cycle costs

Our high-strength line pipe with high reliability in quality can allow high-pressure/highly-efficiency transportation of mining energy including development of oil/gas fields in deep-sea areas and reduces the pipeline construction cost.

• Under Sea
• Weight reductions

Our tendon pipe, which is excellent in weldability, strength, availability of heavy wall thickness, high dimensional accuracy, and fatigue resistance has been acclaimed by many users including oil majors for its high safety and reliability in quality. It has been widely used for world-wide TLP (tension leg platform used for development of deep-sea oil/gas fields).

• Under Sea
• Weight reductions, Reduced life-cycle costs

One of the products used for high-alloy tubing. It has excellent resistant to CO2 corrosion up to 250℃.

• Under Sea
• Reduced life-cycle costs

With inline heat treatment, customers' heat treatment process (LP, lead patenting) can be omitted. It is a wire excellent in balance of strength, toughness, and ductility, and it contributes to reduction in lead time, CO2, etc.

• FLNG
• Reduced life-cycle costs

S-TEN™ was developed for welding structures that are resistant to sulfuric acid dew-point corrosion. S-TEN1 is effective for sulfuric acid dew-point corrosion and hydrochloric acid dew-point corrosion. Various selections of hot-rolled steel sheet, cold-rolled steel sheet, piping, and welding materials are available.

• FLNG
• Reduced life-cycle costs, Shortening of lead times, Reduction in manufacturing costs

It is a steel material with addition of 1% chromium to improve corrosion resistance in the ocean. With the addition of chromium, the rust layer on the surface prevents entry of oxygen into the base metal. Progress of corrosion can be half or less compared to normal steel. It is suitable for seawater piping, gas coolers specified for seawater, and ocean structures.

• FLNG
• Under Sea
• Reduced life-cycle costs, Shortening of lead times, Reduction in manufacturing costs

Stainless steel/Ni based alloy pipe has excellent characteristics in corrosion resistance, heat resistance, and low-temperature property. Conventionally, it has been used as a material under harsh environments in the energy fields of oil refining, petrochemicals, and power/gas.

• FLNG
• Under Sea
• Reduced life-cycle costs, Shortening of lead times, Reduction in manufacturing costs

We provide special stainless steels such as SN-1 for nitric acid resistance, DP-28W for urea plants, AH-4 for heat resistance, etc. and also provide stainless steel/Ni-based alloy excellent in corrosion resistance, heat resistance, and low-temperature property. It is used as a material resistant to harsh environments in the energy fields of oil refining, petrochemicals, and power/gas.