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1、PolymerfloodingbehaviorIncreaseRecoveryby14.0%WaterCut(%)Recoveryfactor(%)Polymerinjected,PVCentralwellresultsPO5PT5Polymerinjected(Mg/l?PV)504491Maximumwatercutdrop(%)24.620.7Incrementaloilpertonofpolymer(t)177151Incrementaloilrecoveryfactor(%OOIP)14.011.6LargeScalePilotTestInTheBeiyiqu(Performe
2、din1993)Area：3.13km2 WellPattern：5spot wellspacing:250m Injectionwells：25Productionwells：36LargeScalePilotTestInTheLanan(Performed1994)7-35353-323-32353-333-33353-343-34353-35553-353-3533-P3223-P3313-P3323-34153-P3423-P3513-P3523-36154-3304-P3334-344-P3434-354-P3534-364-P3324-34154-P3424-P3514-P3
3、524-36155-345-34355-355-35355-365-34155-P3425-P3515-P3525-36156-346-P3436-J35556-P3536-366-34156-P3426-P3516-P3526-36157-P347-34357-357-365-P34555-P34355-P35555-P35355-P34155-P34255-P35155-P35256-P34556-P34356-P35556-P35356-P34156-P34256-P35156-P35256-35WelllocationsNo.1pilot Area：1.45km2 wellpat
4、tern：5spotswellspacing212m Injectionwells：16Productionwells：25No.2pilotArea：2.09km2 wellpattern:linedrivewellspacing：300m Injectionwells：9Productionwells：26No1pilotNo2pilotPolymerinjected(Mg/l?PV)640595Maximumwatercutdrop(%)24.417.9Incrementaloilpertonofpolymer(t)12691Incrementaloilrecoveryfactor
5、(%OOIP)14.239.84CentralwellresultsWaterCut(%)Watercutdecreasesby15%-30%Cumulativeproductionincreasedinsinglewell240,000BblsCommercialApplicationResultsByTheEndOf200*Blocks31Developedarea274.35km2Reserves3596millionbblTotalwells5343Totalpolymerinjected0.5028milliontonsCumulativeoilproduction521mil
6、lionbblThepolymerfloodingprocesscanbedividedintofiveperiodsWatercutInjectionPressurePolymerCon.InProducerFirstPeriodWatercutstillgoesupInjectionpressureincreasessharplyNopolymerproducedfromproducerPVInjected00.050.150.350.701.00
