The above figure shows the crude oil tank farm for export in Shengli Oilfield. After the separators are installed, it can function without guard, and drain water immediately as automatic dehydration works . After adding demulsifier in the tank for 6 hours, the water content shows less than 0.5%, which can meet the standard of crude oil export. In addition, can access to remote monitoring, with the installation of transparent electronic floating-body liquid level gauge.  Double-valves control can ensure that the oil will not leak out.