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建立在物理实验基础上的数学模拟技术正成为油气运移研究的重要手段.基于油气趋向于沿着范围狭窄的优势路径发生运移的认识,利用渗逾理论建立油气运聚数学模型,厘定模型在不同运移实验条件下的适用性;进而通过模拟分析,讨论大尺度宏观均匀输导层内运移路径的特征.最后以鄂尔多斯盆地陇东地区三叠系延长统长8油层段的运移研究为例,分析盆地尺度油气运移路径特征.获得油气在非均匀输导条件下形成优势运移路径的认识:流体势的空间变化决定了石油二次运移的主要方向,输导层的非均质性控制着油气二次运移路径的特征及形态.
Based on the physical experiment, mathematical simulation technology is becoming an important means of hydrocarbon migration research.Based on the understanding that oil and gas tend to migrate along a narrow and narrow path, the mathematic model of hydrocarbon migration and accumulation is established by means of permeability theory, and the model And the applicability under different migration experiment conditions.Furthermore, through simulation analysis, the characteristics of migration paths in large-scale macroscopic uniform transport layer are discussed.Finally, the migration of Chang 8 reservoir in Triassic Yanchang Formation in Longdong area, Ordos Basin The paper analyzes the characteristics of hydrocarbon migration path on a scale scale in the basin and obtains the understanding that oil and gas form a dominant transport path under non-uniform transport conditions: the spatial variation of fluid potential determines the main direction of petroleum secondary migration, Heterogeneity controls the characteristics and morphology of secondary migration routes.