Water treatment complicates heavy oil production

Operational units in the Liaohe oil fields are trying to find uses, such as steam-generator feed water, for the water being produced with heavy oil.Finding methods for treating this large water volume has been a complicating factor in producing heavy oil in this part of China.Although some treated water does meet disposal specifications, such parameters as chemical oxygen demand (COD) are still outside of the desired range.Oil fields in the Liaohe area produce a significant amount of heavy oil. Current oil production capacity is 8 million tons/year (143,000 bo/d). Production includes steam stimulation and is complicated by increasing water cut.Current water production is 15 million tons/y...

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