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胜利油区五号桩油田桩74块为湖底扇沉积,根据岩心、粒度分析及测井等资料详细描述开发井集中的中扇辫状水道微相、中扇水道侧缘微相、中扇朵叶体微相的沉积特征。在对处于不同沉积微相的生产井定量分析的基础上,总结出特低渗透条件下湖底扇不同沉积微相的开发特征,通过实验认识到不同沉积微相所表现出迥异不同的开发特征根本原因是不同微相带启动压力梯度差异的体现,动静态资料结合进一步阐明了湖底扇特低渗透油藏不同沉积微相带剩余油分布规律,认为中扇辫状水道微相是剩余油富集主要微相带。
Pile 74 of the Wulizhui Oilfield in Shengli Oilfield is a sublacustrine fan. Based on the core, grain size analysis and logging data, a detailed description of the medium fan-braided channel microfacies in the development wells, Sedimentary Characteristics of Leaf Body Microfacies. Based on the quantitative analysis of production wells in different sedimentary microfacies, the development characteristics of different sedimentary microfacies of sublacustrine fan under ultra-low permeable conditions are summarized. Through experiments, it is found that different sedimentary microfacies show different development characteristics fundamentally The reason is the manifestation of the pressure gradient differences in the start-up of different microfacies zones. The combination of dynamic and static data further clarifies the distribution of remaining oil in different sedimentary microfacies of low-permeability reservoirs in the sub-sector of the lake bottom. It is believed that the medium fan- The main micro-phase.