| Thoughout the fine stratigraphic division and comparison on Chang 9 layer, along with the comprehensive analysis of single well facies, well-logging facies and connected wells’ cross-section, combined with sedimentary microfacies evolution and plane distribution features, it is dictated that the depositional system of the Chang6 reservoir in Huanjiang area belongs to the delta front and turbidite fan depositional environment coexist, main microfacies types are underwater distributary channel and turbidite channels.According to the data collected from Laboratory analysis, logging data, production information and so on during coring, conducting the analysis on reservoir four sexual relationships, physical lower limit and water-oil boundary identification standard, logging interpretation model is established, responsible for the secondary processing and interpretation of 173 wells logging data in the whole region. Then, the overall study on features of reservoir is in progress, where rock and mineral characteristics, microstructure characteristics, physical characteristics and heterogeneity characteristics are included and analyzes the heterogeneity. Based on above, the lithology--physical properties partitioning approach is adopted,SPSS software is applied, in which parameters such as porosity, permeability, flow zone indicator are being as variables, to run a cluster analysis for samples during coring. Then, on the basis of performing a discriminant analysis for clustering results of coring, non-coring information can be detemined, along with hydrocarbon flow units being carved which report the reservior, seepage and other information as well. At last, with employing the carved-out flow units, combined with production and oil testing data, delineation of favorable areas for the whole oil region is executed. The paper analyzes its relation with sedimentary microfacies and reservoir lithology and physical properties and makes dynamic analysis based on oil test data and production data. |
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