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鄂尔多斯盆地古生界天然气的勘探及开发已经取得了很大的成绩 ,这些油气田的储集层或多或少与碳酸盐岩有着密切的关系。因此 ,碳酸盐岩中储集岩的成岩研究具有很大的现实意义。在对 7条野外露头剖面和 6口探井剖面进行现场观察的基础上 ,对上千块样品进行了系统的野外和室内分析。对鄂尔多斯盆地奥陶系马家沟群碳酸盐岩中最主要的岩石类型之一——白云岩的成因及其对储集性能的影响进行了综合研究。研究结果表明 ,本区白云岩是由多因素多期次形成的 ,白云岩形成过程中经过的成岩期次和顺序的不同排列 ,对白云岩的储集性能有很大的影响
Significant achievements have been made in the exploration and development of the Paleozoic natural gas in the Ordos Basin. The reservoirs in these fields are more or less closely related to carbonate rocks. Therefore, the study of diagenesis of reservoir rocks in carbonate rocks has great practical significance. Based on the field observations of seven outcrop sections and six exploration sections, thousands of samples were systematically analyzed in field and interior. A comprehensive study was carried out on the genesis of dolomite, one of the most important rock types in Ordovician Majiagou carbonate rocks in the Ordos Basin and its impact on reservoir properties. The results show that the dolomites in this area are formed by multi-factor and multistage stages. The diagenetic sequence and sequence of dolostones formed during dolomite formation have great influence on the reservoir performance of dolomites