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 spectacular results.
We are surrounded by fuel. From water bottles to the insulation in our houses, natural fuel is a key ingredient in virtually each product we use day by day. According to the newest report issued by the International Gas Union (IGU) in 2019, the global demand in gas has been rising by 35% of the past decade alone.
The causes for this development are manifold, however the IGU determines three primary elements. First, the cost competitiveness of fuel in contrast to different power sources. Secondly, greater safety of supply with regard to infrastructure, supply, and versatile use. Thirdly, gas represents a sustainable form of vitality that may mitigate climate change and lower localized pollution. It has 50% fewer CO2 emissions compared to coal, for example.
In order to meet this growing demand and use, the eco-friendly potential gasoline should be extracted utilizing a sustainable process. One of the largest methods is the Åsgard oil and gas subject on the Haltenbanken, 200 km off the coast of Norway. It accommodates 52 wells combined in sixteen gas fields and connected by 300 km of oil pipelines. As of December 2018, the sector has estimated sources of 9.9 million standard cubic meters of oil equal of oil and fifty one.1 million standard cubic meters of oil equal of gasoline.
The system used comprises three essential areas: Åsgard A, B, and C. Åsgard A is a floating oil manufacturing vessel that has been anchored there permanently since extraction began in 1999. Åsgard B is a floating, semi-submersible fuel 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 gasoline pipeline to the Karsto processing advanced to the north of Stavanger, Norway.
First on the planet Aker Solutions ASA has been supporting the Åsgard gasoline area with numerous fuel subject products, methods, and companies since 2010. In time, the stress within 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 enhance the output to 306 million barrels. These are normally put in on platforms above sea degree.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the recovery rates are improved and the funding and working costs are lowered. In addition, underwater compression leaves a smaller ecological footprint and is more reliable than a platform. The Åsgard system consists of modules for 2 equivalent sets 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, grew to become 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 suitable for driving deep well pumps, bottom intake pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on pressure gauge วัด แรง ดัน of utility, the motors may be made of 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 particular cooling know-how. In designs with inside everlasting magnet motor know-how, or IPM for short, these maintenance-free motors can achieve impressive outputs, efficiencies and, in consequence, value savings.
The efficient and measurable motor cooling system keeps the interior temp- erature as low as attainable. 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 decrease shaft finish 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 fixed move of cooling liquid in the best direction.
This liquid strikes via the inside of the motor from the bottom to the highest. The specifically developed cooling channels define the exact path over all heat sources to discharge the warmth successfully and systematically. At the top finish, the heat from the liquid is then discharged via the motor’s outer wall. Here, it is transferred via the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny part of the underwater compressor system, but they’re also a particularly necessary part. The entire underwater station cannot operate with out these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been operating with none 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 those liquids that are removed by the separator upstream of the gasoline compressors.
In 2017, because of a failure in part of the system which was not provided by ANDRITZ, the motor was sent in for repairs, throughout which an intensive study was conducted. Thermal distribution in the cooling move and the new spots had been analyzed in more detail. The outcomes additionally led to the design of a brand new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally completely overhauled and fitted with a new winding and a model new rotor. This research and the implementation of its findings not solely benefit the present buyer and future clients on this case, but in addition strengthen confidence in the ANDRITZ submersible motor know-how.
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