Thoughts and suggestions on collaborative treatment of pollutant sources in oilfield production processes:An example taking the inhibition of oil mud formation in the treatment process of polymer flooding produced water
As one of the important technologies for tertiary oil recovery,polymer flooding technology has been applied on a large scale in many oil fields.This type of produced water undergoes demulsification,flocculation,and separation processes,causing polyacrylamide to settle into the solid phase.The resulting polymer-containing sludge has high stability and is difficult to handle.This not only brings a serious pollution load to the sewage treatment system,but also causes a large amount of waste of polyacrylamide.This paper summarized the existing problems in the current produced water emulsification and separation process through the generation mechanism of polymer-containing sludge.It was pointed out that"water-solid co-management"was the research direction for green,low-carbon treatment and resource utilization of polymer-containing produced water under the"dual-carbon"background.
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