Combined Supersonic Separator for FPSO
- Viktor S. Vlasenko (Far Eastern Federal University (FEFU)) | Vyacheslav V. Slesarenko (Far Eastern Federal University (FEFU)) | Georgii M. Karpov (Far Eastern Federal University (FEFU))
- Document ID
- International Society of Offshore and Polar Engineers
- The 28th International Ocean and Polar Engineering Conference, 10-15 June, Sapporo, Japan
- Publication Date
- Document Type
- Conference Paper
- 2018. International Society of Offshore and Polar Engineers
- supersonic separator, moist air, FPSO, experiment, vortex tube, numerical simulation
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- 48 since 2007
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In this paper, the authors investigated the patented design of a Combined Supersonic Separator (CSS). CSS is a counter flow three-flow vortex tube with an energy separation chamber in the form of a Laval nozzle that can be used to prepare hydrocarbon gas for transport as well as using hydrocarbon gas as fuel in power units of floating production, storage and offloading systems (FPSO). Technological schemes and recommendations for using a combined supersonic separator in a low-temperature separation system FPSO were proposed. The results of numerical simulation of the separator construction were presented. Experimental data obtained during operation of a combined supersonic separator in moist air are showed.
Annually, the reserves of easily accessible oil and gas are reduced. Large economic losses, damage to the environment require the maximum use of natural and associated petroleum gases. In 2016, only 92 billion cubic meters of associated petroleum gas (APG) were extracted in Russia, of which the volume of flared gas at flare plants is about 11.5 billion m3 (12.5%). Companies in Russia are trying to come to an indicator of the useful use of APG 95%.
Reducing the volumes of readily available hydrocarbons requires new technical solutions. They should allow maintaining the current level of production or increasing it. Therefore, shelf deposits and deepwater deposits are being developed, the resources of which are extracted with the help of various mining complexes. Fig. 1 shows the forecast for gas production by region (Dong-Hyun Lee et al, 2014).
To date, the share of offshore oil and gas production is about 33% and 30%, and by 2020 this figure will grow to 35% and 41%, respectively (Preedy, 2017).
A growing role is played by floating production, storage and offloading systems which allow extracting, preparing to store and shipping hydrocarbons. According to the data of 2015, today there are more than 180 floating production facilities, and this number is constantly increasing. To provide the system with energy, as well as for high economic efficiency and ensuring the required quality of the shipped product, FPSO must have an effective system for cleaning and drying the incoming gas, and also ensure a high degree of utilization of associated petroleum gas.
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