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塔里木盆地塔中４井区石炭系ＣＩ油组为石英砂岩类碎屑岩储层．通过对该区３口井的岩芯、薄片观察及有关资料分析，识别出了压实压溶作用、胶结作用、溶解作用、交代作用及自生产矿物的形成５种成岩作用类型；划分出准同生期、早成岩期、晚成岩Ａ期和晚成岩Ｂ期４个成岩阶段；分析了剖面上的成岩共生序列及各阶段的成岩演化特征，并指出本区在成岩演化过程中至少存在两期油气运聚：一期在早成岩晚期至晚成岩Ａ期之初，另一期在晚成岩Ａ期的末期．
The Carboniferous CI oil group in the Tazhong 4 well in the Tarim Basin is a quartz sandstone clastic reservoir. By analyzing the core and thin sections of the three wells in the area and analyzing the related data, five types of diagenesis were identified as compaction and pressure dissolution, cementation, dissolution, metasomatism and self-production of minerals. Syngenetic, early diagenetic stage, late diagenetic stage A and late diagenetic stage B, respectively. The diagenetic symbiotic sequence and the diagenetic evolution of each stage are analyzed. It is pointed out that there are at least two diagenetic stages Period Hydrocarbon Migration and Accumulation: The first stage was from the early stage of early diagenesis to the late stage of late diagenesis A, while the other stage was late stage A of Late Diagenesis.