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 fuel. From water bottles to the insulation in our properties, natural gasoline is a key ingredient in virtually every product we use daily. According to the most recent report issued by the International Gas Union (IGU) in 2019, the worldwide demand in gas has been rising by 35% of the past decade alone.
The causes for this development are manifold, but the IGU determines three major elements. First, the price competitiveness of gasoline in distinction to different power sources. Secondly, larger safety of provide with regard to infrastructure, delivery, and flexible use. Thirdly, gasoline represents a sustainable type of power that may mitigate local weather change and lower localized pollution. It has 50% fewer CO2 emissions in comparison with coal, for example.
In order to fulfill this rising demand and use, the eco-friendly potential gas will have to be extracted utilizing a sustainable process. One of the most important systems is the Åsgard oil and gas area on the Haltenbanken, 200 km off the coast of Norway. It accommodates fifty two wells mixed in sixteen gas fields and connected by 300 km of oil pipelines. As of December 2018, the sphere 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 gas.
The system used includes three important areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there permanently since extraction started in 1999. Åsgard B is a floating, semi-submersible fuel and condensate processing platform for processing and stabilizing of gasoline 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 planet Aker Solutions ASA has been supporting the Åsgard fuel field with numerous gasoline subject merchandise, methods, and providers since 2010. In time, the stress within the storage facility in gas-producing fields drops. Compressors are wanted to maintain 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 usually put in on platforms above sea stage.
However, Åsgard relies on an underwater system. By using compressors on the seabed the recovery charges are improved and the investment and working costs are decreased. 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 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, turned ANDRITZ Ritz GmbH and a part of the ANDRITZ Group, as did the manufacturing 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 realm of utility, the motors can be made from forged iron, bronze or totally different type 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 know-how. In designs with interior everlasting magnet motor expertise, or IPM for brief, these maintenance-free motors can achieve spectacular outputs, efficiencies and, in consequence, value financial savings.
pressure gauge หน้าปัด 4 นิ้ว and measurable motor cooling system keeps the inside temp- erature as low as possible. 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 decrease shaft finish of the rotor. One of its two primary duties is cooling and lubricating the nearby thrust bearing. By doing so, the impeller ensures there is a constant flow of cooling liquid in the proper direction.
This liquid moves via the within of the motor from the bottom to the highest. The specially developed cooling channels outline the exact path over all heat sources to discharge the heat effectively and systematically. At the top finish, the warmth from the liquid is then discharged via 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 a part of the underwater compressor system, but they’re also an extremely necessary part. The entire underwater station cannot function without these motors to drive the pumps. Since first being put in 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 along with the pump and conveys these liquids which would possibly be eliminated by the separator upstream of the gasoline compressors.
In 2017, as a end result of a failure in part of the system which was not supplied by ANDRITZ, the motor was sent in for repairs, throughout which an extensive research was conducted. Thermal distribution in the cooling circulate and the recent spots had been analyzed in additional element. The results also 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 brand new winding and a new rotor. This examine and the implementation of its findings not solely profit the current buyer and future customers on this case, but in addition strengthen confidence in the ANDRITZ submersible motor expertise.