济阳坳陷火成岩岩相分布模式研究

RESEARCH ON DISTRIBUTION PATTERN OF VOLCANIC FACIES IN JIYANG DEPRESSION

火成岩岩相决定了火成岩体中原生孔隙的发育规律,影响着后期的构造形变、断裂破碎对火成岩储层的改善程度,是影响储层性质的基本因素之一。通过研究明确了济阳坳陷火成岩不同岩相的识别特征,建立了岩相分布模式,包括侵入相及相关变质相模式、火山碎屑锥相模式及溢流玄武岩火山相相模式三种类型,为火成岩储层的综合评价奠定基础。

Volcanic facies is one of the basic factors that affect the characters of volcanic reservoir. It controls the development of primary pore in volcanic body and affects the deuteric structural deformation and fracture reform of the volcanic reservoir. In this paper the distinguishable characters of different volcanic facies and three distribution pattern of volcanic facies are presented, which includes invasion facies and relational metamorphic facies, pyroclastic cone facies. It lays the foundation for synthetical evaluation of volcanic reservior.