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DaqingOilfieldisalargeinlandfluvialdelta-lacustrinesedimentationreservoirwithmulti-layersandhighreservoirheterogeneity.Fromnorthtosouththereare7localstructuresinDaqingOilfield,andverticallythereare3setsofoil-bearingformations-Saertu,PutaohuaandGaotai...