The reservoirs are very heterogeneous and the key factors that lead to the reservoir heterogeneity would be the sedimentary microfacies, diagenetic facies and paleokarst morphologic unit.

To predict the distribution of the favorable volcanic facies belts of Yingcheng Group in Xujiaweizi Depression, it's necessary to analyze the factors to control the reservoir capabilities of the volcanic rocks.

It is found that seism process can improve sandstone reservoir quality.

Beach body types and reservoir property of Feixianguan Formation in northwestern Sichuan;

Taking the third member of the Shahejie Formation in Well C913 and C916 area on the northern zone of the Zhanhua depression as example, this paper discusses the type and feature of the reservoir spaces of the sand conglomerate in the nearshore submerged fan in detail, and researches the reservoir property of the sand conglomerate in different microfacies of nearshore submerged fan.