【摘要】 在详细岩相学观察的基础上,充分利用包裹体的岩相学特征、均一温度特征、气体组分特征以及碳同位素特征等,确定了松辽盆地营城组火山岩中包裹体的类型、期次和成分特征,并对火山岩高含CO2气藏的成藏期次进行了分析。综合各种地质地化证据,确定松辽盆地火山岩高含CO2气藏中烃类气成藏特征是连续充注基础上的两期成藏,即泉头组—青山口组沉积时期和嫩江组沉积中后期;CO2充注发生在喜山期,CO2的充注晚于烃类气的充注。更多还原

【Abstract】 On the basis of detailed observation of petrography,and this study defined the types,periods and compositions of fluid inclusions in the volcanic rocks of the Yingcheng Formation in Songliao basin,using the characteristics of fluid inclusion,homogenization temperature,gas composition and carbon isotopes.In addition,the pool-forming periods of volcanic gas reservoirs with a high content of CO2 were analyzed.Integrated geological and geochemical evidence shows that hydrocarbon accumulation features in the volcanic CO2-bearing reservoir in Songliao basin contain two accumulation periods characterized by successive recharging process,i.e.,sedimentary period of Quantou-Qingshankou formations and the middle-late stage of Nenjiang Formation deposition.CO2 was recharged in the Himalaya period,later than hydrocarbon gas.更多还原