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 results.
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 gas has been rising by 35% of the past decade alone.
The causes for this trend are manifold, however the IGU determines three primary components. First, the price competitiveness of fuel in distinction to other energy sources. Secondly, larger safety of provide with regard to infrastructure, supply, and versatile use. Thirdly, gasoline represents a sustainable type of vitality that can mitigate local weather change and lower localized pollution. It has 50% fewer CO2 emissions compared to coal, for example.
In order to satisfy this rising demand and use, the eco-friendly potential gas must be extracted utilizing a sustainable course of. One of the largest techniques is the Åsgard oil and fuel field on the Haltenbanken, 200 km off the coast of Norway. It accommodates fifty two wells mixed in sixteen gasoline fields and connected by 300 km of oil pipelines. As of December 2018, the field has estimated assets of 9.9 million standard cubic meters of oil equivalent of oil and fifty one.1 million standard cubic meters of oil equal of fuel.
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 completely since extraction started in 1999. Åsgard B is a floating, semi-submersible gasoline and condensate processing platform for processing and stabilizing of gas and condensate. เกจวัดแรงดันถังออกซิเจน 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 earth Aker Solutions ASA has been supporting the Åsgard gasoline subject with varied fuel area products, systems, and companies since 2010. In time, the pressure in the storage facility in gas-producing fields drops. Compressors are needed to sustain the output. Aker delivered the first-ever underwater compressor system worldwide to Åsgard so as to increase the output to 306 million barrels. These are usually installed on platforms above sea degree.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the restoration charges are improved and the funding and operating prices are decreased. In addition, underwater compression leaves a smaller ecological footprint and is extra dependable than a platform. The Åsgard system consists of modules for two identical units of compressors, pumps, scrubbers, and coolers. The motors wanted to drive the pumps come from ANDRITZ.
Small, however important
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, grew to become ANDRITZ Ritz GmbH and a half of the ANDRITZ Group, as did the manufacturing of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are suitable for driving deep well pumps, backside intake pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the world of utility, the motors could be manufactured from cast iron, bronze or completely different sort 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 particular cooling know-how. In designs with inside permanent magnet motor technology, or IPM for brief, these maintenance-free motors can achieve spectacular outputs, efficiencies and, consequently, value savings.
The efficient and measurable motor cooling system retains the inside temp- erature as little as possible. Drinking water is used as a cooling liquid, which is why the motors can operate in media of up to 75° C. An impeller with optimized suction and supply is mounted at the lower shaft end of the rotor. One of its two primary tasks 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 best course.
This liquid strikes by way of the inside of the motor from the underside to the highest. The specifically developed cooling channels define the exact path over all warmth sources to discharge the warmth effectively and systematically. At the top end, the warmth from the liquid is then discharged through the motor’s outer wall. Here, it is transferred through 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 necessary part. The whole underwater station can not 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 types the condensate unit together with the pump and conveys those liquids which are eliminated by the separator upstream of the gas compressors.
In 2017, because of a failure in part of the system which was not supplied by ANDRITZ, the motor was despatched in for repairs, during which an in depth research was performed. Thermal distribution in the cooling move and the hot spots had 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 completely overhauled and fitted with a brand new winding and a brand new rotor. This examine and the implementation of its findings not solely benefit the current buyer and future clients in this case, but in addition strengthen confidence within the ANDRITZ submersible motor technology.