渤海S油田层内夹层控制下的剩余油分布模式

Internal Remaining Oil Distribution Pattern Controlled by Interlayer:Taking S Oilfield in Bohai as an Example

为分析总结层内夹层控制下的剩余油分布规律,开展了渤海S油田夹层构型解剖和数值模拟分析研究。研究表明:层内夹层以泥质夹层和物性夹层为主,呈现低密度、弱连续分布特征。层内夹层的延伸规模、发育位置及注采井钻遇率等因素控制着剩余油的分布位置和富集程度。层内剩余油分布模式主要有夹层顶部富集型、夹层上下富集型和夹层底部富集型3种。

In order to analyze the remaining oil distribution law controlled by interlayer,the reservoir architecture and numerical simulation analysis of interlayer were carried out in Bohai S oilfield.The results present that interlayer was mainly composed of clay interlayer and physical interlayer,showing a low density,weak continuous distribution characteristics.The remaining oil distribution and enrichment were controlled by the extension scale,distribution position of interlayer and the relationships with injection wells and interlayer.The internal remaining oil distribution patterns can be divided into three models：the top type interlayer,the up-down interlayer and the bottom interlayer.