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- W2381005280 abstract "A laboratory study of further enhancing recovery(EOR) with a surfactant,mainly consisted of petroleum sulfonate,was done, after polymer flooding,for the Ng4 sandstone formation of No.1 Block of Central Gudao Oilfield in Shengli Oilfield complex.A compounded system mainly composed of petroleum sulfonate was developed and then an displacement efficiency experiment was carried out.By comparing results of several displacing systems of surfactants with low interfacial tension,the optimum petroleum sulfonate oil-displacing system,0.3% SLPS-01C+0.1% co-agent 1#,was screened out.The influence of converting time of injection on the EOR of petroleum sulfonate system was studied as well.The best oil-sweeping and oil-displacing results can be obtained when the petroleum sulfonate system begins to be injected at the lowest water-cut after the polymer flooding,the reason is that,owing to the polymer flooding,an oil bank is formed,preventing the channeling of the surfactant." @default.
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- W2381005280 date "2007-01-01" @default.
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- W2381005280 title "A laboratory study of enhancing oil recovery with petroleum sulfonant system after polymer flooding" @default.
- W2381005280 hasPublicationYear "2007" @default.
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