In one of the 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 spectacular outcomes.
We are surrounded by gas. From water bottles to the insulation in our houses, natural gas is a key ingredient in virtually each product we use daily. According to the most recent report issued by the International Gas Union (IGU) in 2019, the global demand in fuel has been rising by 35% of the past decade alone.
The causes for this development are manifold, however the IGU determines three main components. First, the price competitiveness of gasoline in contrast to other power sources. Secondly, greater security of supply with regard to infrastructure, delivery, and versatile use. Thirdly, gasoline represents a sustainable form of energy that can mitigate local weather change and decrease localized air 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 will have to be extracted using a sustainable course of. One of the most important systems is the Åsgard oil and fuel area on the Haltenbanken, 200 km off the coast of Norway. It incorporates fifty two wells mixed in 16 gas fields and connected 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 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 started in 1999. Åsgard B is a floating, semi-submersible fuel 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 gasoline pipeline to the Karsto processing advanced to the north of Stavanger, Norway.
First on the earth Aker Solutions ASA has been supporting the Åsgard fuel subject with varied gasoline subject merchandise, techniques, and services since 2010. In time, the strain 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 have the ability to increase the output to 306 million barrels. These are normally installed on platforms above sea degree.
However, Åsgard relies on an underwater system. By utilizing compressors on the seabed the restoration charges are improved and the investment and operating prices are lowered. In addition, underwater compression leaves a smaller ecological footprint and is more dependable than a platform. The Åsgard system consists of modules for two identical units 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, became ANDRITZ Ritz GmbH and part of the ANDRITZ Group, as did the manufacturing of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are suitable for driving deep properly pumps, bottom consumption pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the world of software, the motors can 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 special cooling know-how. In designs with inside everlasting magnet motor technology, or IPM for short, these maintenance-free motors can achieve spectacular outputs, efficiencies and, in consequence, price savings.
The effective and measurable motor cooling system retains the interior temp- erature as low as possible. Drinking เกจวัดแรงดันแก๊สlpgรถยนต์ 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 on the lower shaft finish 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 fixed flow of cooling liquid in the proper direction.
This liquid strikes via the inside of the motor from the underside to the top. The specifically developed cooling channels define the exact path over all heat sources to discharge the warmth effectively and systematically. At the top finish, 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 only a tiny part of the underwater compressor system, but they’re also an especially necessary part. The whole underwater station can not function with out these motors to drive the pumps. Since first being put in 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 together with the pump and conveys those liquids which are removed by the separator upstream of the fuel compressors.
In 2017, as a result of a failure in part of the system which was not provided by ANDRITZ, the motor was sent in for repairs, during which an extensive study was conducted. Thermal distribution within the cooling flow and the recent spots have been analyzed in additional 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 fully overhauled and fitted with a new winding and a brand new rotor. This examine and the implementation of its findings not only benefit the present customer and future prospects on this case, but in addition strengthen confidence within the ANDRITZ submersible motor expertise.
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