In one of the 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 gasoline. From water bottles to the insulation in our houses, pure gasoline is a key ingredient in just about each product we use every day. According to the most recent report issued by the International Gas Union (IGU) in 2019, the worldwide demand in gasoline has been rising by 35% of the past decade alone.
The reasons for this development are manifold, but the IGU determines three major factors. First, the cost competitiveness of gasoline in distinction to different power sources. Secondly, greater safety of provide with regard to infrastructure, delivery, and flexible use. Thirdly, gasoline represents a sustainable type of vitality that can mitigate climate change and lower localized air pollution. It has 50% fewer CO2 emissions compared to coal, for instance.
In order to meet this rising demand and use, the eco-friendly potential gas must be extracted utilizing a sustainable course of. One of the most important techniques is the Åsgard oil and gas area on the Haltenbanken, 200 km off the coast of Norway. It incorporates 52 wells combined in sixteen gas fields and linked by 300 km of oil pipelines. As of December 2018, the sphere has estimated resources of 9.9 million standard cubic meters of oil equivalent of oil and fifty one.1 million commonplace cubic meters of oil equivalent of gasoline.
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 gasoline and condensate processing platform for processing and stabilizing of fuel 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 complex to the north of Stavanger, Norway.
First in the world Aker Solutions ASA has been supporting the Åsgard fuel field with numerous gasoline field merchandise, methods, and providers 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 to find a way to improve the output to 306 million barrels. These are usually installed on platforms above sea stage.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the restoration rates are improved and the investment and operating costs are reduced. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for 2 equivalent sets of compressors, pumps, scrubbers, and coolers. The motors wanted to drive the pumps come from ANDRITZ.
Small, but important
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, grew to become ANDRITZ Ritz GmbH and a 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 well pumps, backside consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the world of application, the motors could be manufactured from forged iron, bronze or totally different kind of stainless-steel and installed 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 special cooling expertise. In designs with inside everlasting magnet motor expertise, or IPM for short, these maintenance-free motors can obtain spectacular outputs, efficiencies and, as a result, value savings.
The efficient and measurable motor cooling system keeps the inside temp- erature as low as attainable. Drinking water is used as a cooling liquid, which is why the motors can function 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 main duties is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there is a fixed move of cooling liquid in the right course.
This liquid strikes via the inside of the motor from the underside to the highest. The specially developed cooling channels outline the exact path over all heat sources to discharge the heat successfully and systematically. At the top end, the warmth from the liquid is then discharged by way of the motor’s outer wall. Here, เกจ์วัดแรงดันน้ำมันเครื่อง is transferred by way of the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a part of the underwater compressor system, however they’re additionally a particularly essential part. The complete underwater station cannot operate without these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been working with none faults. All in all, ANDRITZ Ritz delivered three twopole submersible motors with an output of 736 kw. The motor varieties the condensate unit together with the pump and conveys those liquids which would possibly be removed by the separator upstream of the gasoline compressors.
In 2017, due to a failure in part of the system which was not provided by ANDRITZ, the motor was despatched in for repairs, throughout which an extensive examine was performed. Thermal distribution within the cooling move and the new spots had been analyzed in additional detail. The outcomes also 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 new winding and a new rotor. This research and the implementation of its findings not only profit the present customer and future customers in this case, but also strengthen confidence in the ANDRITZ submersible motor technology.
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