| Atfer about forty years prospecting and developing,Sanzhao Area has become the important oilfield. Because Fu-yang oil bed is low porosity and low permeability reservoir and the oil distribution is complex,the cost of exploration is very high. In order reducing the cost of the exploration and development,finding out the rule of the oil and gas distribution,providing the credibility geology gist for the further exploration and development,it is necessary to research the sedimentary facies and main target district.Through the analysis of petrology characteristics and individual well section of sedimentary facies of core holes,main facies types and its features of Fu-yang oil bed in Sanzhao area are summarized on the basis of sedimentary background of region. The sedimentary facies of this area are delta plain facies and delta front facies. By the analysis and contrast of plans of sedimentary facies and isopach maps of sandstone, the planar characteristics of distribution of sedimentary facies and sand bodies of Fu-yang oil bed in Sanzhao area are elaborated.Through analysis of physical property information and oil reservoir profile,Oil-Water Interface of Fu-yang oil bed in Sanzhao area are not unified in different geological structures and areas. which assume wavy variation,multiple series and structural units combination of oil-gas-water. Generally,the oil distribution are pieces-link.But different fault blocks make a great difference in accumulation degree of oil,because of the high or low tectonic, fault development, petrology characteristics and physical property. Generally,oil and gas are enriched in the surroundings of horst blocks and fault zone.According to the results of this study, multi-dimensional method is applied to carry on the reservoir prediction, and two types favorable area are forecasted. Based researched above, we work out well site disposition principle. At last implementation demands are put forth for future work.
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