A sandstone reservoir in Nanhai Oilfield has been in operation for more than 30 years.In recent years,severe sand production has led to the accumulation of oil sands in the separator,greatly affecting the stable operation of the production process system.The original production separator used seawater for sand flushing,but due to low water temperature,the sand flushing effect was poor.After research and extensive on-site experiments,it was found that using production reinjection water for sand flushing,adjusting the sand flushing pressure and time,improving the sand flushing process,significantly improved the sand flushing effect,and further reduced the corrosion of the separator and the impact on oil-water treatment.
维普
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