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为了寻找兴城-丰乐地区有利储层,综合应用了岩心观察,普通、铸体薄片镜下鉴定,岩石化学分析及高速压汞等多种手段,对研究区火山岩岩石类型、岩相、孔隙、裂缝特征进行深入分析研究。研究表明:研究区火山岩主要有火山熔岩和火山碎屑岩2种岩石类型,火山岩储集空间主要分为原生和次生两大类,其中次生孔隙为主要储集空间。火山岩储层的发育程度受成岩作用、风化作用及烃碱流体等因素的控制。
In order to find the favorable reservoirs in Xingcheng-Fengle area, a combination of core observation, common, microscopic identification of cast thin sections, petrochemical analysis and high-pressure mercury injection were used to study the types of volcanic rocks, lithofacies, , Crack characteristics in-depth analysis and research. The results show that there are two types of volcanic rocks in the study area: volcanic lava and volcaniclastic rocks. The volcanic reservoirs are mainly divided into two types: primary and secondary, with secondary porosity as the main reservoir space. The development of volcanic reservoirs is controlled by diagenesis, weathering and hydrocarbon-alkali fluids.