松辽盆地深层火山岩储层中的CH4包裹体:产状特征及其地质意义

营城组火山岩是松辽盆地深层油气藏的主要储层之一，本次研究我们在该组火山岩中首次发现了较多的纯CH4包裹体，这类包裹体主要以原生及次生形式产于流纹岩石英斑晶及玄武岩气孔充填矿物石英之中。综合分析认为，伴随营城组火山岩喷发活动，产生了较多的无机成因的CH4等气体，它们连同可能存在的其它有机成因的烃类气体一起，沿流纹岩中的微裂隙及玄武岩中的气孔等构造运移、聚集，从而形成深层火山岩储层中的富CH4天然气藏。因此，营城组火山岩不仅仅作为被动的油气储层存在，而且该期火山活动可能也为深层油气成藏提供了至少部分CH4等气体的来源。

Methane fluid inclusions in deep level volcanic reservoir rocks in Songliao basin:haracteristics of occurrence and geological implications.

In this study,many pure methane fluid inclusions have been found for the first time in the volcanic rocks of Yingcheng Formation,which is one of the mainly natural gas reservoir strata in the deep level parts of The Songliao basin.This type of fluid inclusions mainly occurred as primary and secondary ones in the quart? phenocrysts of rhyolite and quartz fill in the air vents of basalt. On the base of comprehensive analyses,we concluded that inorganic CH_4-dominated gases were given off accompanying the volc...