In one of many 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 spectacular outcomes.
We are surrounded by fuel. From water bottles to the insulation in our houses, natural gas is a key ingredient in virtually each product we use day by day. According to the newest 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 pattern are manifold, however the IGU determines three main elements. First, the cost competitiveness of fuel in contrast to other power sources. Secondly, เกจวัดไนโตรเจนราคา of supply with regard to infrastructure, delivery, and versatile use. Thirdly, gas represents a sustainable type of power that may mitigate climate change and lower localized air 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 fuel should be extracted utilizing a sustainable course of. One of the largest techniques is the Åsgard oil and gasoline subject on the Haltenbanken, 200 km off the coast of Norway. It contains fifty two wells combined in sixteen gas fields and related by 300 km of oil pipelines. As of December 2018, the sector has estimated assets of 9.9 million standard cubic meters of oil equivalent of oil and fifty one.1 million commonplace cubic meters of oil equal of gasoline.
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 began in 1999. Åsgard B is a floating, semi-submersible gas 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 fuel pipeline to the Karsto processing complicated to the north of Stavanger, Norway.
First on the planet Aker Solutions ASA has been supporting the Åsgard gasoline field with various gas field merchandise, techniques, and companies since 2010. In time, the stress in 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 in order to enhance the output to 306 million barrels. These are normally installed on platforms above sea stage.
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 reduced. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for two equivalent units of compressors, pumps, scrubbers, and coolers. The motors wanted to drive the pumps come from ANDRITZ.
Small, but essential
In 2010, Ritz Pumpenfabrik GmbH in Schwäbisch-Gmünd, Germany, turned ANDRITZ Ritz GmbH and a half of the ANDRITZ Group, as did the production of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep properly pumps, backside intake pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the realm of utility, the motors can be manufactured from forged iron, bronze or completely different sort of stainless-steel and put in 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 special cooling know-how. In designs with interior everlasting magnet motor technology, or IPM for brief, these maintenance-free motors can obtain impressive outputs, efficiencies and, consequently, price financial savings.
The effective and measurable motor cooling system retains the inside temp- erature as little as attainable. 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 supply is mounted at the lower shaft end 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 move of cooling liquid in the proper path.
This liquid strikes by way of the within of the motor from the bottom to the top. The specifically developed cooling channels define the precise path over all warmth sources to discharge the heat successfully and systematically. At the highest finish, the warmth from the liquid is then discharged via 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 part of the underwater compressor system, however they’re additionally an especially necessary half. The entire underwater station cannot function with out 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 these liquids which are removed by the separator upstream of the fuel compressors.
In 2017, as a outcome of a failure in a part of the system which was not equipped 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 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 new winding and a new rotor. This examine and the implementation of its findings not solely benefit the present customer and future customers on this case, but in addition strengthen confidence within the ANDRITZ submersible motor expertise.
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