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 gasoline is a key ingredient in nearly 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 fuel has been rising by 35% of the previous decade alone.
The causes for this development are manifold, but the IGU determines three main components. First, the cost competitiveness of fuel in contrast to different power sources. Secondly, greater safety of provide with regard to infrastructure, delivery, and flexible use. Thirdly, gas represents a sustainable type of power that may mitigate local weather change and lower localized air 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 fuel should be extracted utilizing a sustainable course of. One of the largest methods is the Åsgard oil and gas area on the Haltenbanken, 200 km off the coast of Norway. It incorporates fifty two wells combined in 16 gas fields and related by 300 km of oil pipelines. As of December 2018, the sphere has estimated resources of 9.9 million commonplace cubic meters of oil equal of oil and 51.1 million commonplace cubic meters of oil equal of gasoline.
The system used comprises three important areas: Åsgard A, B, and C. Åsgard A is a floating oil manufacturing vessel that has been anchored there permanently since extraction started in 1999. Åsgard B is a floating, semi-submersible gas and condensate processing platform for processing and stabilizing of gas 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 planet Aker Solutions ASA has been supporting the Åsgard gasoline field with numerous fuel field merchandise, systems, and providers since 2010. In time, the stress 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 in order to improve the output to 306 million barrels. These are usually put in on platforms above sea degree.
However, Åsgard is based on an underwater system. By using compressors on the seabed the restoration rates are improved and the funding and operating costs are reduced. In addition, underwater compression leaves a smaller ecological footprint and is extra dependable than a platform. The Åsgard system consists of modules for two similar 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, became ANDRITZ Ritz GmbH and part of the ANDRITZ Group, as did the production of submersible motors. Due to the renewable winding, ANDRITZ submersible motors are appropriate for driving deep nicely pumps, backside consumption pumps, suction pumps, seawater pumps, and underwater equipment.
Depending on the realm of utility, the motors could be manufactured from cast iron, bronze or completely different kind 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 technology. In designs with interior everlasting magnet motor expertise, or IPM for short, these maintenance-free motors can obtain impressive outputs, efficiencies and, consequently, cost financial savings.
The effective 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 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 main 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 right course.
This liquid moves via the within of the motor from the bottom to the highest. The specifically developed cooling channels define the precise path over all warmth sources to discharge the heat effectively and systematically. At the top end, the warmth from the liquid is then discharged by way of 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, but they are also an especially important half. The whole underwater station can’t operate 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 forms the condensate unit together with the pump and conveys these liquids which may be eliminated by the separator upstream of the gas compressors.
In 2017, because of a failure in part of the system which was not equipped by ANDRITZ, the motor was despatched in for repairs, throughout which an in depth research was carried out. Thermal distribution within the cooling circulate and the hot spots have been analyzed in additional element. The outcomes also led to the design of a 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. pressure gauge ราคา ถูก and the implementation of its findings not only profit the current buyer and future prospects on this case, but also strengthen confidence in the ANDRITZ submersible motor expertise.