In one of the 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 impressive outcomes.
We are surrounded by fuel. From water bottles to the insulation in our houses, natural fuel is a key ingredient in nearly every product we use day by day. According to the newest report issued by the International Gas Union (IGU) in 2019, the global demand in gasoline has been rising by 35% of the past decade alone.
The causes for this development are manifold, but the IGU determines three primary components. First, the fee competitiveness of gasoline in contrast to other power sources. Secondly, higher safety of supply with regard to infrastructure, delivery, and versatile use. Thirdly, fuel represents a sustainable type of vitality that can mitigate local weather change and decrease localized pollution. It has 50% fewer CO2 emissions compared to coal, for instance.
In order to fulfill this rising demand and use, the eco-friendly potential fuel should be extracted utilizing a sustainable course of. One of the most important methods is the Åsgard oil and fuel subject on the Haltenbanken, 200 km off the coast of Norway. It contains fifty two wells mixed in 16 fuel fields and linked by 300 km of oil pipelines. As of December 2018, the sector has estimated assets of 9.9 million normal cubic meters of oil equal of oil and fifty one.1 million commonplace cubic meters of oil equal of gas.
The system used contains three important areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there completely 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 fuel 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 area with varied gas area merchandise, systems, and services 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 to be able to improve the output to 306 million barrels. These are normally installed 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 funding and working prices are lowered. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for two 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 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, bottom consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the world of application, the motors could be made from cast iron, bronze or completely different sort 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 technology. In designs with interior everlasting magnet motor expertise, or IPM for brief, these maintenance-free motors can obtain spectacular outputs, efficiencies and, consequently, cost financial savings.
ราคาเพรสเชอร์เกจ and measurable motor cooling system retains the interior temp- erature as low as possible. 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 supply is mounted at the decrease shaft finish of the rotor. One of its two major tasks is cooling and lubricating the close by thrust bearing. By doing so, the impeller ensures there is a fixed flow of cooling liquid in the proper path.
This liquid moves via the inside of the motor from the bottom to the highest. The specifically developed cooling channels outline the exact path over all heat sources to discharge the warmth successfully and systematically. At the top end, the heat from the liquid is then discharged via the motor’s outer wall. Here, it is 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’re also an especially important part. The complete underwater station can not operate without these motors to drive the pumps. Since first being installed in 2016, these submersible motors have been working without any 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 that are eliminated by the separator upstream of the gas compressors.
In 2017, as a outcome of a failure in a half of the system which was not provided by ANDRITZ, the motor was sent in for repairs, throughout which an extensive study was conducted. Thermal distribution in the cooling circulate and the recent spots had been analyzed in more element. The outcomes additionally led to the design of a new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was also completely overhauled and fitted with a model new winding and a new rotor. This study and the implementation of its findings not only benefit the present buyer and future clients on this case, but also strengthen confidence within the ANDRITZ submersible motor know-how.
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