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- W2357457316 abstract "The results of laboratory studies at 45℃ on oil displacement by tri-and bicomponent combinational flooding fluids containing a soluble silicophosphate(SSP) instead of alkaline NaOH used in Daqing are presented.The chemical structure and functions of SSP are dipicted in general terms.Tricomponent fluids composed of 4—12 g/L SSP,1—4 g/L surfactant,alkylbenzene sulfonates,and 1.2 g/L polymer create ultralow interfacial tension with crude oil.In comparison with 12/3/1.2 g/L NaOH/surfactant/polymer fluid or 1.2 g/L polymer solution,12/3/1.2 g/L SSP/surfatant/polymer fluid and 8/1.2 SSP/polymer fluid produce similar flow pressures but have stronger fluidity controlling capability in artificial homogeneous core of 0.2 μm2 and indicate similar profiling capability and stronger resistance to water flush in parallel cores of higher,medium,and lower permeability,1.2,0.6,and 0.2 μm2,as shown by partial core flow rate determinations.On these parallel cores of higher,medium,and lower permeability after water flood finished,injecting 0.5 PV of 8/3/1.2 g/L SSP/surfactant/polymer fluid has led to an enhancement in oil recovery(EiOR) similar to that by 12/3/1.2 g/L NaOH/surfactant/polymer fluid,37%,and the EiOR is increased to 40.7% when the dosage of SSP in the former fluid is raised to 12 g/L." @default.
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- W2357457316 date "2008-01-01" @default.
- W2357457316 modified "2023-09-25" @default.
- W2357457316 title "Studies on Oil Displacement Efficiency of Soluble Silicophosphate Combinational Flooding Fluids" @default.
- W2357457316 hasPublicationYear "2008" @default.
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