In one of many world’s largest oil and gas 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 properties, pure gas is a key ingredient in nearly 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 fuel has been rising by 35% of the previous decade alone.
The reasons for this development are manifold, however the IGU determines three major elements. First, the cost competitiveness of gas in contrast to different energy sources. Secondly, greater safety of supply with regard to infrastructure, delivery, and flexible use. Thirdly, gas represents a sustainable form of power that can mitigate local weather change and decrease localized air pollution. It has 50% fewer CO2 emissions compared to coal, for example.
In order to meet this rising demand and use, the eco-friendly potential gasoline must be extracted using a sustainable process. One of the most important systems is the Åsgard oil and gas area on the Haltenbanken, 200 km off the coast of Norway. It accommodates 52 wells combined in sixteen gas fields and related by 300 km of oil pipelines. As of December 2018, the sphere has estimated sources of 9.9 million commonplace cubic meters of oil equal of oil and fifty one.1 million normal cubic meters of oil equivalent of fuel.
The system used includes three important areas: Åsgard A, B, and C. Åsgard A is a floating oil manufacturing vessel that has been anchored there permanently since extraction started in 1999. Åsgard B is a floating, semi-submersible fuel and condensate processing platform for processing and stabilizing of gasoline and condensate. This platform is supplemented by the condensate storage facility Åsgard C and the 707 km-long Åsgard gas pipeline to the Karsto processing complicated to the north of Stavanger, Norway.
First in the world Aker Solutions ASA has been supporting the Åsgard gasoline area with numerous gas area merchandise, systems, and companies since 2010. In time, the stress within the storage facility in gas-producing fields drops. Compressors are wanted to maintain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard to find a way to increase the output to 306 million barrels. These are normally put in on platforms above sea degree.
However, Åsgard relies on an underwater system. By using compressors on the seabed the recovery charges are improved and the investment and working prices are reduced. In addition, underwater compression leaves a smaller ecological footprint and is more dependable than a platform. The Åsgard system consists of modules for 2 similar sets of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, however essential
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, turned ANDRITZ Ritz GmbH and part of the ANDRITZ Group, as did the production of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep properly pumps, bottom intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of application, the motors can be made from forged iron, bronze or totally different sort of stainless steel and put in either 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 expertise, or IPM for short, these maintenance-free motors can obtain impressive outputs, efficiencies and, as a result, cost 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 operate in media of as a lot as 75° C. An impeller with optimized suction and delivery is mounted at the lower shaft finish of the rotor. One of its two major duties is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there’s a fixed circulate of cooling liquid in the best course.
This liquid strikes through the within of the motor from the bottom to the top. The specifically developed cooling channels define the exact path over all heat sources to discharge the heat successfully and systematically. At the top end, the heat from the liquid is then discharged through the motor’s outer wall. Here, it’s transferred through the floor 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 are also an extremely important part. The whole underwater station can’t 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. เกจวัดแก๊ส with the pump and conveys those liquids which might be removed by the separator upstream of the gas compressors.
In 2017, because of a failure in part of the system which was not equipped by ANDRITZ, the motor was despatched in for repairs, throughout which an extensive research was carried out. เกวัดแรงดันน้ำ in the cooling move and the hot spots had been analyzed in additional detail. The results additionally led to the design of a new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was also utterly overhauled and fitted with a model new winding and a new rotor. This study and the implementation of its findings not solely profit the present customer and future clients in this case, but also strengthen confidence in the ANDRITZ submersible motor know-how.
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