A reservoir lied at Ng2 in Zhuang 106 area is considered as a lithologic reservoir deposited by obsolescence fluvial(cutoff lake) through analyzing its base geologic characters.

• 分析了桩106地区馆上段油藏的基本地质特征,认为其油藏类型为废弃河道(牛轭湖)沉积的岩性油藏。