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 impressive results.
We are surrounded by gas. From water bottles to the insulation in our houses, pure fuel is a key ingredient in just about every product we use daily. 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 trend are manifold, however the IGU determines three main factors. First, the price competitiveness of fuel in contrast to other energy sources. Secondly, larger security of supply with regard to infrastructure, supply, and flexible use. Thirdly, fuel represents a sustainable type of energy that may mitigate climate change and decrease localized pollution. It has 50% fewer CO2 emissions compared to coal, for instance.
In order to meet this growing demand and use, the eco-friendly potential gas will have to be extracted using a sustainable process. One of the largest methods is the Åsgard oil and gasoline area on the Haltenbanken, 200 km off the coast of Norway. It contains 52 wells mixed in sixteen fuel fields and related by 300 km of oil pipelines. As of December 2018, the sector has estimated sources of 9.9 million normal cubic meters of oil equal of oil and 51.1 million commonplace cubic meters of oil equal of gasoline.
The system used contains 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 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 gas 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 field with numerous gas area merchandise, techniques, and services since 2010. In time, the stress within the storage facility in gas-producing fields drops. Compressors are needed to maintain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard to be able to increase the output to 306 million barrels. These are normally installed on platforms above sea level.
However, Åsgard relies on an underwater system. By using compressors on the seabed the recovery rates are improved and the investment and working prices 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 two similar 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 part of the ANDRITZ Group, as did the production of submersible motors. digital pressure gauge to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep properly pumps, backside intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the area of utility, the motors could be manufactured from cast iron, bronze or totally different type of chrome steel and installed 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 brief, 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 little as possible. Drinking water 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 decrease shaft end of the rotor. pressure gauge octa of its two primary tasks is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there is a fixed circulate of cooling liquid in the best course.
This liquid strikes through the within of the motor from the underside to the top. The specifically developed cooling channels outline the exact path over all warmth sources to discharge the warmth successfully and systematically. At the highest finish, the heat from the liquid is then discharged via 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 only a tiny part of the underwater compressor system, however they are additionally a particularly important half. The entire underwater station can’t operate with out these motors to drive the pumps. Since first being put in 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 along with the pump and conveys these liquids which might be removed by the separator upstream of the gasoline compressors.
In ไดอะแฟรม ซีล , due to a failure in a part of the system which was not equipped by ANDRITZ, the motor was sent in for repairs, during which an in depth examine was conducted. Thermal distribution within the cooling flow and the hot spots had been analyzed in more detail. The outcomes also led to the design of a model new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally fully overhauled and fitted with a model new winding and a brand new rotor. This examine and the implementation of its findings not only benefit the current customer and future customers on this case, but also strengthen confidence within the ANDRITZ submersible motor know-how.
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