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The growing demand to optimize the deoiling performance for offshore oil & gas gives the incentive to improve existing control solutions by means of model-based control solutions. This paper proposes a separation efficiency grey-box model of a deoiling hydrocyclone. Grey-box modeling of deoiling hydrocyclones aims to combine knowledge from fluid dynamics with the data-driven parameter estimation to yield better accuracy than black-box derived models while keeping the computational load much lower than CFD-simulations. The model has to be reasonably accurate in all likely operating conditions and be computed in real-time, in order to be beneficial for advanced model-based control. The developed grey-box model is based on flow resistance and oil droplet trajectory analysis. The model functionally describes how the valve openings, inflow rates, and PDR set-points affect separation efficiency of the considered generic deoiling hydrocyclone. The results are reasonable and provide a fundamental overview of how the operational conditions affect separation efficiency. The model can be extended to account for changes in the axial velocity distribution, coalescence and breakup of droplets.
|Number of pages||6|
|Publication status||Published - 2018|
|Event||3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018 - Esbjerg, Denmark|
Duration: 30 May 2018 → 1 Jun 2018
Conference number: 3
|Conference||3rd IFAC Workshop on Automatic Control in Offshore Oil and Gas Production OOGP 2018|
|Period||30/05/2018 → 01/06/2018|
- Grey-Box Modeling
- Separation Efficiency
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01/09/2017 → 31/10/2020