CAJ | 학술논문

通过岩心观察、薄片鉴定、岩石化学及物性资料分析等,对滴南凸起区石炭系火山岩岩性特征及其意义进行了研究。结果表明：滴南凸起区石炭系火山岩具有基性、中性、酸性火山岩共存,亚碱性及碱性系列并生的特点;基性火山岩以碱性系列为主,主要分布在滴西17井区;中酸性火山岩可分为碱性和亚碱性系列2部分,前者主要分布在滴西14井区和滴西18井区,后者主要分布在滴西17井区、滴西14井区和滴西10井区;平面上,岩性分布具有明显分带性,整体呈现自西北向东南方向由基性向酸性依次过渡的特征。岩浆作用方式控制了火山岩结构、构造及基质属性,进而导致了角砾熔岩物性最优,火山凝灰岩的储集物性最差。
통과암심관찰、박편감정、암석화학급물성자료분석등,대적남철기구석탄계화산암암성특정급기의의진행료연구。결과표명：적남철기구석탄계화산암구유기성、중성、산성화산암공존,아감성급감성계렬병생적특점;기성화산암이감성계렬위주,주요분포재적서17정구;중산성화산암가분위감성화아감성계렬2부분,전자주요분포재적서14정구화적서18정구,후자주요분포재적서17정구、적서14정구화적서10정구;평면상,암성분포구유명현분대성,정체정현자서북향동남방향유기성향산성의차과도적특정。암장작용방식공제료화산암결구、구조급기질속성,진이도치료각력용암물성최우,화산응회암적저집물성최차。
Based on core observation, thin section identification, petrochemical analysis and reservoir property data analysis, the characteristics and significance of Carboniferous volcanic rocks in Dinan uplift were studied. The result shows that the Carboniferous volcanic rocks in Dinan uplift have the characteristics of coexistence of basic, intermediate and acidic, and intercrescence of subalkaline and alkaline series. Basic volcanic rocks mainly are alkaline series and distributed in Dixi 17 well area. Intermediate-acidic volcanic rocks can be divided into alkaline and sub-alkaline series, the former mainly distributed in Dixi 14 and 18 well areas, and the latter mainly distributed in Dixi 17, 14 and 10 well areas. The lithology distribution on the plane has obvious zonation showing the gradual transition from basic rock to acidic rock towards the southeast. Magmatic process controls the volcanic texture, structure and matrix properties, which led to a gradual deterioration of physical properties from brecciated lava to volcanic tuff.