Plant-wide Control Strategy for Improving Produced Water Treatment

This work focuses on investigation and development of an innovative Produced Water Treatment (PWT) technology for offshore oil & gas production by employing the model-based plant-wide control strategy. The key contributions lie in two folds: (i) the advanced anti-slug analysis and control by focusing on the upstream well-pipeline-riser systems; (ii) optimization of controlling topside separation processes, which includes both the three-phase separator and de-oiling hydrocyclone facilities. A new PWT control strategy, named direct efficiency control, has been proposed for guarantee of the PWT quality in a continuous and real-time manner. However, this new solution relies on the availability of reliable Oilin-Water (OiW) real-time measuring technologies, which apparently are still quite challenging and un-matured