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本次研究通过对鄂尔多斯盆地东部临兴地区二叠纪山西组岩层钻井取芯进行薄片磨制、包裹体显微观测测温,并对所测得的包裹体的相态、均一温度、冰点温度进行综合分析,从而求得当时捕获包裹体时的温度、盐度及其捕获期次,确定油气运移成藏期次和时间。本次研究区的油气包裹体分为两个期次:第一期分布在早期裂隙和溶蚀孔隙中的包裹体代表早期油气运移和充注过程,时间大约在220Ma左右;第二期分布在晚期裂隙和溶蚀孔隙中的包裹体代表本区的主成藏期,时间大约在50Ma左右。
In this study, the Permian Shanxi Formation formation in the eastern Ordos Basin was sliced by drilling core coring and the temperature of the inclusions was measured microscopically. The phase, homogenization temperature, freezing temperature A comprehensive analysis was carried out to determine the temperature, salinity and the number of traps at the time of the capture of the inclusions at that time, and to determine the times and times of hydrocarbon migration and accumulation. The hydrocarbon inclusions in the study area are divided into two phases: the first phase inclusions in early fractures and dissolved pores represent the early hydrocarbon migration and filling process, with a time of about 220 Ma; the second phase is distributed in the The inclusions in late fissures and dissolved pores represent the main accumulation period in this area, which is about 50Ma.