Study On The Sequence Stratigraphy, Sedimentary Facies And 3d Geological Modelling Of The Upper Es₂～1 Reservoir Of Pucheng Oilfield

In view of the problems among the development, some research are done to the three development blocks by the way of reservoir fine description, such as the following: First, the type-boundary section is divided for the S₂S₁ of Pucheng Oilfield using the lithologic and electronic characteristic, the markers of top and bottom are ascertained, the layer is divided into 12 sublayers. High-resolution sequence stratigraphy theory is used to identify the cycle of the based leval, and this is based on the rock core and well logging information, S₂S₁ reservoir is divided as a medium cycle, and then some correlation is made in the strata, finally, the high-resolution sequence stratigraphy framework is build to this reservoir. Secend, the sedimentary facies is ascertained as teminal fan which have constant provenances by the observation and description of rock core and some well logging information and then some microfacies reserach are made to each sublayer. Third, according to the research of microfacies and strata sequence, the intrastratal,interlayer and planimetric anisotropy is researched for each sublayer, it is concluded that the intrastratal nisotropy type is serious and the interlayer nisotropy type is serious or light, And some research are made to the barrier bed and intercalated bed, their identification markers are ascertained, and then three different categories are made to the reservoir,but just main in theⅡandⅡin S₂S₁ of Pucheng Oilfield . Finally,based on all the reaserach above,a 3D model is builed including structure model,microfacies model and physical property model,oil saturation model,gas saturation model,NTG model,by using this model ,the oil and gas reserves have been fitting,and the result demonstrates that the model is accord with the true geologic feature,it could offer the reservoir simulation a standard 3D model.