根据铸体薄片、扫描电镜、电子探针、X-衍射分析,对塔河油田AT1区三叠系中油组储层成岩作用特征及其对物性影响进行了系统研究。认为该区三叠系中油组成分成熟度及结构成熟度较低,储层成岩后生作用复杂多变,现今主要处于晚成岩A期;压实作用是减少孔隙度的主要方式,溶蚀作用对孔隙度的增大有积极意义。 The diagenesis and reservoir properties of the Triassic Zhong You Formation in the AT1 area of ​​Tahe Oilfield were systematically studied based on the thin film, scanning electron microscope, electron probe and X-ray diffraction. It is concluded that the composition and maturity of the Triassic oil-bearing formation in the Triassic are low and the diagenesis of reservoirs is complex and changeable. Nowadays, it is mainly in late diagenetic A stage. Compaction is the main way to reduce the porosity, Degree increases have positive significance.