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    多类型火山岩体地震属性内幕刻画技术以松辽盆地南部断陷层火山岩为例

    Seismic attribute-based characterization of internal architecture of multi-type volcanic reservoirs: A case study of the faulted succession in the southern Songliao Basin

    • 摘要: 基于松南气田火山岩储层的长期勘探实践,梳理了不同类型火山岩储层的地质特征及其地震响应特征。地震属性在火山体几何形态的解释中展现出优势,通过地震属性预测技术对储层岩体的识别与刻画进行了分析与总结,构建了多属性融合的火山岩气藏识别技术体系。研究表明,不同类型火山岩气藏在地质特征上存在显著差异,其内幕通道、边界以及内部构造、岩相等特征对应的有效地震属性也有所不同,为火山岩储层的精细刻画提供了新的技术手段,并在储层预测中发挥了重要作用。通过对不同地震属性体解释技术的深化研究与应用,有效提升了火山岩气藏的识别及内幕刻画能力,对指导高效勘探与开发具有重要的实践意义。

       

      Abstract: Based on long-term exploration practices in Songnan gas field, this paper systematically reviews the geological characteristics and seismic responses of different types of volcanic reservoirs. Seismic attributes show advantages in interpreting the geometry of volcanic reservoirs. Through the analysis and summary of volcanic reservoir characterization using seismic attributes, this study establishes a multi-attribute fusion-based framework for volcanic gas reservoir identification. The study shows that different types of volcanic gas reservoirs differ markedly in their geologic features and require distinct seismic attributes to delineate their internal conduits, boundaries, structures, and lithofacies. Among these, instantaneous attributes, texture attributes, structure attributes, and time-frequency decomposition attributes are the most effective. Multi-attribute interpretation enhances volcanic gas reservoir identification and internal architecture delineation, which is of great practical significance for efficient exploration and development.

       

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