通过岩心观察、铸体薄片鉴定、阴极发光等资料的综合分析,五号桩油田桩62-66块沙三段储层成岩作用类型主要有压实、胶结、溶蚀作用等。对成岩作用对孔隙度的影响进行定量分析,表明压实作用和胶结作用减孔率高达70.71%和73.05%,溶蚀作用对增加孔隙起到了主导作用,其产生的次生孔隙占总孔隙的79%。定量计算结果与实验室岩心测试结果基本一致,验证了本次研究方法的合理性。 Through the comprehensive analysis of core observation, identification of castings, and cathodoluminescence, the diagenesis types of reservoirs in Member 3 of Block 62-66 of Wuzhushui Oilfield mainly include compaction, cementation and dissolution. Quantitative analysis of the effect of diagenesis on porosity shows that the porosity reduction by compaction and cementation is as high as 70.71% and 73.05%, respectively. The dissolution plays a dominant role in increasing the porosity, and the secondary porosity is 79% of the total porosity %. The quantitative calculation results are basically the same as the laboratory core test results, which verify the rationality of this research method.