It is recognized that, with high sandstone composition and textural maturity, the pore types of Donghetang Formation mainly are intergranular space and in tergrain denudation pore.

• 结果认为东河塘组砂岩成分和结构成熟度都很高，孔隙类型以粒间孔隙和粒间溶蚀孔隙为主，在河口湾、前滨-临滨相中的海滩砂坝、滨岸三角洲砂坝中发育中高孔渗储层；