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Production separator. Degasser. Flush water. Membrane. Hydro cyclone. Fiber Filter. Pump. Water recycle PW treatment. Concentrate recycle with pump. HC to prod. process. Flush water to treatment. Pump. Hydro- cyclone. Pump. MF concentrate to treatment. Sand- cyclone.

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  1. Production separator Degasser Flush water Membrane Hydro cyclone Fiber Filter Pump Water recycle PW treatment Concentrate recycle with pump HC to prod. process Flush water to treatment Pump Hydro- cyclone Pump MF concentrate to treatment Sand- cyclone Water treatment chemicals Adsorbent injection Adsorbent cyclone In-line adsorption reactor Solids to waste Adsorbent cyclone Regenerated adsorbent Degasser FBR Adsorbent to regeneration FBR water recycle Oxygen Treated PW discharge to sea Nutrients Pump “TOP WATER” PROJECT Treatment of Produced Water: Characterization and New Treatment Strategies towards Zero Harmful Discharge to Sea Background 1. Treatment of suspended emulsions/colloids 2. Treatment of dissolved & soluble compounds Water from oil or natural gas production wells, or separated from crude oil or condensate after extraction What is produced water? Flotation Static media separator - 150 million m3 of produced water discharged in 2000 - contains o/w emulsions, dissolved organics, chemical additives and heavy metals which affect negatively the environment Any impact on the environment? ? ? Adsorption Biological regeneration Soluble compounds Develop a treatment concept to achieve zero harmful discharge(ZHD) Suspended particles: emulsions and colloids What to do? Membrane technology Chemically enhanced separation Air stripping Extraction  Each Work is performed by its own PhD and SINTEF personnel  Experiments using produced water rig Proposed process flow diagram An offshore drilling oil platform SINTEF NTNU NFR Oil Companies PROJECT: Treatment of Produced Water: Characterization and new treatment strategies – TOP Water Goals: • Standardized characterization protocols for EIF evaluation and selection of appropriate treatment approaches • Cost effective methods for dispersed oil removal (target < 5 ppm oil in water) • Cost effective methods for dissolved compounds removal Contact E-Mail:Sumihar.Silalahi@ntnu.no Ciprian.Scurtu@ntnu.no Tel.: +47-735 50375

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