Tidal effects influence design of water-disposal piles

The effect of sea level changes due to tidal action influences the design and operation of offshore water-disposal piles on offshore platforms.A disposal pile provides a last treatment step for produced water, and operators commonly use the pile also to treat deck drainage. The typical pile is designed as a simple vertical gravity separator. On fixed platforms and tension-leg platforms (TLP), operators often treat produced water and deck drainage in water-disposal piles prior to discharging the water into the sea (Fig. 1). Click here to enlarge imageA study of the pile installed on an offshore platform operating in Angola illustrates the dynamic response of these piles to tidal level c...

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