In one of many world’s largest oil and fuel fields, the firstever underwater compressor system employs ANDRITZ submersible motors. With their renewable winding these maintenance-free designed pumps have achieved impressive results.
We are surrounded by gasoline. From water bottles to the insulation in our houses, natural fuel is a key ingredient in virtually each product we use daily. 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 previous decade alone.
The causes for this pattern are manifold, however the IGU determines three primary factors. First, the cost competitiveness of gas in distinction to different vitality sources. Secondly, higher security of provide with regard to infrastructure, supply, and versatile use. Thirdly, gas represents a sustainable form of vitality 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 gas should be extracted utilizing a sustainable process. One of the most important systems is the Åsgard oil and fuel field on the Haltenbanken, 200 km off the coast of Norway. It incorporates 52 wells mixed in sixteen fuel fields and linked by 300 km of oil pipelines. As of December 2018, the sphere has estimated resources of 9.9 million normal cubic meters of oil equivalent of oil and fifty one.1 million standard cubic meters of oil equivalent of gas.
The system used includes 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 gasoline 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 complicated to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard gas field with numerous gasoline area merchandise, methods, and services since 2010. In time, the strain within the storage facility in gas-producing fields drops. เกจ์วัดแรงดัน are wanted to maintain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard so as to increase the output to 306 million barrels. These are normally installed on platforms above sea degree.
However, Åsgard is based on an underwater system. By utilizing compressors on the seabed the restoration rates are improved and the investment 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 identical sets of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, however important
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, turned ANDRITZ Ritz GmbH and a half of the ANDRITZ Group, as did the production of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are suitable for driving deep nicely pumps, bottom intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the realm of software, the motors can be made from cast iron, bronze or totally different type 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 expertise. In designs with interior everlasting magnet motor expertise, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, as a result, cost financial savings.
The efficient and measurable motor cooling system keeps the interior temp- erature as little as potential. Drinking water is used as a cooling liquid, which is why the motors can operate in media of up to 75° C. An impeller with optimized suction and supply is mounted on the lower shaft end of the rotor. One of its two major duties is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there’s a constant move of cooling liquid in the best direction.
This liquid strikes through the within of the motor from the bottom to the top. The specifically developed cooling channels outline the exact path over all heat sources to discharge the heat effectively and systematically. At the top end, the heat from the liquid is then discharged by way of 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 part of the underwater compressor system, however they are also a particularly important part. The complete underwater station can not function without 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 types the condensate unit together with the pump and conveys those liquids that are eliminated by the separator upstream of the fuel 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 extensive research was performed. Thermal distribution in the cooling flow and the recent spots were analyzed in additional element. 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 fully overhauled and fitted with a brand new winding and a new rotor. This examine and the implementation of its findings not only benefit the current buyer and future clients on this case, but also strengthen confidence in the ANDRITZ submersible motor expertise.
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