The Liaohe Oilfield is the largest heavy oil production field in China with
10,000 oil wells and a production capacity of 250,000 BPD (12,500,000
T/year). Using a steam simulation process, the oilfields produce 20,000 m3
/day of produced water. The objective of the produced water
purification project was to provide water quality suitable for feed water to
the high pressure, once-through steam generators.