【摘要】 松辽盆地北部深层火山岩气藏可分为火山岩烃类气藏和火山岩CO2 气藏。在研究两种气藏类型及特征的基础上 ,通过气源岩排气期、断裂活动期和盖层封闭能力形成期研究 ,以及包裹体均一温度资料分析认为 ,火山岩烃类气藏主要形成时期为泉头组沉积末期—青山口组沉积期 ,火山岩CO2 气藏主要形成于青山口组沉积期 ,其次为嫩江组沉积末期。成藏模式分析认为 ,火山岩烃类气藏为源岩内天然气沿裂缝短距离运移聚集于火山岩圈闭中形成 ,火山岩CO2 气藏为幔源CO2 气沿深大断裂长距离垂向运移聚集于火山岩圈闭中形成更多还原

【Abstract】 In the northern Songliao basin, the deep volcanic gas pools can be divided into two types: hydrocarbon gas pool and CO 2 gas pool. According to our investigation on these pools characteristics, gas expulsion periods of source rocks, active periods of faults and formation period of sealing ability of cap rocks, and our analyses of homogenization temperature of fluid inclusions, it can be considered that the hydrocarbon gas pools mainly formed during latest Quantou stage to Qingshankou stage, and that the CO 2 gas pools mainly during Qingshankou stage and latest Nenjiang stage. The analyses of accumulation models indicated that the hydrocarbon gas are trapped in the volcanic rock by a short migration along fractures from the source rocks, and that the CO 2 gas by a long migration along deep major fault from the mantle source.更多还原