In one of many world’s largest oil and gasoline fields, the firstever underwater compressor system employs ANDRITZ submersible motors. With their renewable winding these maintenance-free designed pumps have achieved impressive outcomes.
We are surrounded by gas. From water bottles to the insulation in our properties, natural fuel is a key ingredient in virtually every product we use every day. According to the newest report issued by the International Gas Union (IGU) in 2019, the worldwide demand in fuel has been rising by 35% of the past decade alone.
เพรสเชอร์เกจ for this development are manifold, but the IGU determines three primary factors. First, the price competitiveness of gasoline in contrast to different power sources. Secondly, higher security of supply with regard to infrastructure, delivery, and flexible use. Thirdly, gasoline represents a sustainable type of vitality that can mitigate climate change and lower localized pollution. It has 50% fewer CO2 emissions in comparability with coal, for instance.
In order to satisfy this growing demand and use, the eco-friendly potential fuel must be extracted using a sustainable process. One of the largest systems is the Åsgard oil and gasoline subject on the Haltenbanken, 200 km off the coast of Norway. It contains 52 wells mixed in sixteen fuel fields and linked by 300 km of oil pipelines. As of December 2018, the field has estimated resources of 9.9 million normal cubic meters of oil equivalent of oil and fifty one.1 million commonplace cubic meters of oil equal of gas.
The system used includes three essential areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there completely since extraction started in 1999. Åsgard B is a floating, semi-submersible gas and condensate processing platform for processing and stabilizing of gas and condensate. This platform is supplemented by the condensate storage facility Åsgard C and the 707 km-long Åsgard fuel pipeline to the Karsto processing advanced to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard fuel area with various gas area products, systems, and companies since 2010. In time, the strain in the storage facility in gas-producing fields drops. Compressors are wanted to sustain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard in order to improve the output to 306 million barrels. These are normally put in on platforms above sea stage.
However, Åsgard is based on an underwater system. By utilizing compressors on the seabed the recovery rates are improved and the funding and working prices are reduced. In addition, underwater compression leaves a smaller ecological footprint and is more reliable than a platform. The Åsgard system consists of modules for two similar units of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, but essential
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, became ANDRITZ Ritz GmbH and a half of the ANDRITZ Group, as did the manufacturing of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep nicely pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of utility, the motors may be made from forged iron, bronze or completely different kind of stainless-steel and put in both vertically or horizontally. These are water-filled and watercooled, three-phase asynchronous motors with squirrel cages and a mech- anical seal. They are fitted with MCT, a special cooling technology. In designs with inside permanent magnet motor know-how, or IPM for short, these maintenance-free motors can achieve spectacular outputs, efficiencies and, consequently, value savings.
The effective and measurable motor cooling system keeps the interior temp- erature as low as potential. Drinking water is used as a cooling liquid, which is why the motors can function in media of up to 75° C. An impeller with optimized suction and delivery is mounted at the lower shaft end of the rotor. One of its two primary tasks is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there’s a constant flow of cooling liquid in the best direction.
This liquid moves through the inside of the motor from the bottom to the top. The specially developed cooling channels define the precise path over all warmth sources to discharge the heat effectively and systematically. At the highest finish, the warmth from the liquid is then discharged through the motor’s outer wall. Here, it’s transferred via the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a half of the underwater compressor system, however they’re additionally a particularly important part. The complete underwater station cannot function with out these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been operating without any faults. All in all, ANDRITZ Ritz delivered three twopole submersible motors with an output of 736 kw. The motor forms the condensate unit along with the pump and conveys these liquids that are eliminated by the separator upstream of the gasoline compressors.
In 2017, due to a failure in part of the system which was not supplied by ANDRITZ, the motor was sent in for repairs, during which an in depth examine was performed. Thermal distribution within the cooling circulate and the new spots were analyzed in more element. The results also led to the design of a brand new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally fully overhauled and fitted with a new winding and a model new rotor. This examine and the implementation of its findings not solely profit the present buyer and future clients in this case, but additionally strengthen confidence in the ANDRITZ submersible motor know-how.
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