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The S0 reservoir in the BBK area is a reevaluation of unused development resources. According to the change trend of oilfield production tasks, the development test of the S0 reservoir is imperative, but the sedimentary characteristics of the reservoir have not yet been perfected; the author uses core, logging curve and various analysis and test data to describe the sedimentary facies of the S0 reservoir in detail, through the method of the combination of quantitative and qualitative sand body comprehensive identification. First, refer to the effective thickness, permeability, frequency of the interlayer development and other parameters of the sand body in the work area to quantitatively determine the microfacies. Then, combined with the electrical survey chart of typical microfacies, the microfacies types of sand bodies of single-well single-layer are qualitatively determined. Finally, the comprehensive judgment results are calibrated in the facies zone base map, which is used for the analysis of the overall distribution law of each microfacies and the precise positioning of the sand body boundary; it is concluded that the underwater distributary channel sand body of the S0 oil layer is not developed, and the outer front sheet sand is developed in a large area through the analysis of the judgment results of sedimentary microfacies. Generally speaking, it belongs to the subfacies deposits in the outer front of the delta, which provides a favorable geological basis for later development adjustment and effect evaluation.

Study on Sedimentary Characteristics of S0 Reservoir in BBK Area