五号桩油田桩39井区沙三上段储层流动单元研究
Research on reservoir flow units of the upper part of Member 3 of Shahejie Formation of Zhuang 39 Block in Wuhaozhuang Oilfield
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摘要: 以五号桩油田桩39井区沙三上段断块油藏为例,针对陆相辫状河三角洲沉积储层纵横向变化快、分布复杂、储层非均质性严重等地质特点,开展储层流动单元研究,探索出了一套适合辫状河三角洲储层流动单元的研究思路和研究方法,并进行应用研究。根据储层流动带指标将研究区沙三上段划分出四类流动单元,建立了储层流动单元的二维及三维分布模型,并对流动单元特征及其对油气分布和产能的控制作用进行了系统的分析。Abstract: This article is focused on characterization of reservoir flow units of the upper part of Member 3 of Shahejie Forma-tion of Zhuang 39 Block in Wuhaozhuang Oilfield in Zhanhua Sag.The sedimentary facies of reservoir is a typical terrestrial braid deltas and fan-deltas sediment,the microfacies of which quickly change both vertically and horizontally,complicated distribution and high characteristics of reservoir heterogeneity.Taking this characteristic and geological real-ity of the oilfield into account,a set of research methods and technology of reservoir flow units are suggested and performed.Four kinds of flow units are identified in the upper part of Member 3 of Shahejie Formation of the oilfield according to reservoir flow belt index FZI and the distribution models of reservoir flow units of twodimension and threedimension are made.The research shows that flow units can control the distribution and output ability of oil and gas.