In one of many 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 fuel. From water bottles to the insulation in our houses, pure gasoline is a key ingredient in virtually every 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 reasons for this pattern are manifold, but the IGU determines three primary elements. First, the cost competitiveness of fuel in contrast to other vitality sources. Secondly, larger security of provide with regard to infrastructure, delivery, and versatile use. Thirdly, gasoline represents a sustainable form of power that can mitigate local weather change and decrease localized pollution. It has 50% fewer CO2 emissions in comparison with coal, for instance.
In order to fulfill this growing demand and use, the eco-friendly potential gasoline should 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 combined in 16 gasoline 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 51.1 million normal cubic meters of oil equal of gasoline.
The system used contains three important areas: Åsgard A, B, and C. Åsgard A is a floating oil production vessel that has been anchored there completely 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 advanced to the north of Stavanger, Norway.
First in the world Aker Solutions ASA has been supporting the Åsgard fuel subject with various fuel field merchandise, techniques, and providers since 2010. In pressure gauge วัด แรง ดัน , the strain in 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 have the ability to enhance the output to 306 million barrels. These are normally installed on platforms above sea level.
However, Åsgard is predicated on an underwater system. By using compressors on the seabed the restoration rates are improved and the investment and operating costs are lowered. In addition, underwater compression leaves a smaller ecological footprint and is extra reliable than a platform. The Åsgard system consists of modules for 2 similar units of compressors, pumps, scrubbers, and coolers. The motors needed to drive the pumps come from ANDRITZ.
Small, but essential
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 appropriate for driving deep properly pumps, backside intake pumps, suction pumps, seawater pumps, and underwater machinery.
Depending on the realm of software, the motors can be made from forged iron, bronze or totally different kind 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 particular cooling technology. In designs with interior everlasting magnet motor expertise, or IPM for short, these maintenance-free motors can achieve impressive outputs, efficiencies and, consequently, value savings.
The effective and measurable motor cooling system keeps 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 finish of the rotor. One of its two major 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 moves through the inside of the motor from the underside to the top. The specially developed cooling channels outline the exact path over all heat sources to discharge the warmth successfully and systematically. At the top end, the warmth from the liquid is then discharged through the motor’s outer wall. Here, it is transferred via the surface of the motor to the medium to be pumped.
The ANDRITZ submersible motors are just a tiny a half of the underwater compressor system, but they are also an especially important half. The whole underwater station can’t function 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 along with the pump and conveys those liquids which might be removed by the separator upstream of the fuel compressors.
In 2017, due to a failure in a part of the system which was not provided by ANDRITZ, the motor was despatched in for repairs, throughout which an extensive examine was conducted. Thermal distribution in the cooling flow and the new spots were analyzed in additional element. The results additionally led to the design of a new plate crosssection for the rotor plates.
Because of this, the motor to be repaired was additionally completely overhauled and fitted with a model new winding and a model new rotor. This examine and the implementation of its findings not solely profit the current customer and future prospects in this case, but additionally strengthen confidence within the ANDRITZ submersible motor expertise.