徐家围子断陷深层火山岩储层特征

The Reservoir Characteristics of Deep Volcanic Rock in Xujiaweizi Fault Depression

通过对岩心、岩屑及显微资料的观察,分析了徐家围子火山岩储层的岩性岩相特征、储集空间发育特征、物性特征及其影响因素。研究表明:原生孔隙、次生孔隙和裂隙构成了储层的储集空间;岩性和岩相共同控制了储层储集空间的发育,不同的岩石类型,其物性不同,相同的岩石类型所处岩相不同,其物性也有较大的差别;储层物性受岩性岩相、构造作用以及成岩作用的共同控制。

In observation of core,we have analyzed the debris and microscopic data,including the lithology and lithofacies characteristics,reservoir space development characteristics,physical characteristics and its influencing factors of Xujiaweizi volcanic rock were analyzed.Our researches show that the primary pore,secondary pore and fissure will constitute the main reservoir space of volcanic rock in Xujiaweizi Fault Depression.Lithology and lithofacies control are of the development of reservoir space.Different rock types,its physical property are different.In the same rock types in different lithofacies,we think its physical property also has huge differences.Reservoir physical properties are controlled by lithology and lithofacies,structure function and diagenetic effects.