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板桥一北大港地区深层（３５００ｍ以下深度）沙二段、沙三段发育以深水浊积扇、扇三角洲和冲积扇指状砂坝为主的碎屑岩沉积体系。为了评价深层砂岩的储集性能，在沉积特征研究的基础上，利用岩石薄片、阴极发光、扫描电镜、Ｘ－衍射、镜质体反射率等分析手段，研究深层碎屑岩储集层的岩石学特征、成岩作用及成岩演化阶段。研究结果认为，沉积相类型、异常高压和成岩演化对板桥—北大港地区储集层性能有重要影响，孔隙类型以次生孔隙为主，发育两个次生孔隙带，有机酸和ＣＯ３是导致次生孔隙形成的直接因素。图５表１参３（李建国摘）
In the second section of Beigandang area of Beig Bridge-Beidagang (depth below 3500m), the clastic sedimentary system is dominated by deep-water turbidite fan, fan delta and alluvial-fan finger bar. In order to evaluate the reservoir performance of deep sandstone, based on the study of sedimentary characteristics, the rocks of deep clastic reservoir are studied by means of rock thin slices, cathodoluminescence, scanning electron microscopy, X-ray diffraction and vitrinite reflectance analysis. Features, Diagenesis and Diagenetic Evolution. The results show that the types of sedimentary facies, abnormal high pressure and diagenetic evolution have an important influence on the reservoir performance of Banqiao-Beidagang area. The pore types are dominated by secondary pores, and two secondary pore zones are developed. The organic acids and CO 3 are The direct cause of secondary pore formation. Figure 5 Table 1 Reference 3 (Li Jianguo Pick)