| The thesis synthetically utilize high-resolution sequence stratigraphy and sedimentary theories to proceed fine reservoir study, favorable reservoir forecast, petroleum concentrate area, payable block optimize and so on.Fuyu oil-bearing layer of Shuangcheng gas field is small monosandbody, medium porosity and low permeability, severe heterogeneity, reservoir fast alternation, bad development effects of development well. Fuyu oil-bearing layer of Shuangcheng gas field is continental delta depositional system. The reservoir mainchiefly is distributary channel. In order to figure out questions and contradictions in the oil field production process, original 17 sublayers of Fuyu oil-bearing layer is vertically subdivided 39 short-scale cycle(SSC), which correspond to a channel stage. It is to establish high resolution sequence stratigraphy framework by means of high resolution sequence stratigraphy division and correlation in the studied area. According to delicate logging microfacies identification and plane facies combination, it is to draw up plane sedimentary microfacies of important 29 SSCs. The Relationship of the base level and the lake level which control facies sequence and facies tract is defined. To forecast monosandbody contributing factors and comprehensively evaluate short scale-cycles reservoirs, 201 monosandbody reservoirs are divided 3 kinds and 6 subkinds:â… 1,â… 2,â…¡1,â…¡2,â…¢1,â…¢2, and to preferentially choice in vertically fiveâ… 1 SSCs which are major reservoirs for development. Moreover, Based on what is fine dissection of four dense well development areas define petroleum enrichment patterns. Finally, to predict the controlling areas of exploration and evaluation wells, and select 3 profitable gas-bearing blocks, which are structure-lithologic gas reservoirs. The study points out that is the major horizons in the vertically and the main areas in the plane of Shuangcheng gasfield. it is virtual directive value for the future exploratory development.
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