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基于大量流体包裹体的产状、显微荧光、显微测温及测盐等综合分析,并结合地区埋藏史,对义和庄凸起东部新近系油藏的油气充注期次和成藏期进行了研究。研究发现,义和庄凸起东部新近系存在2期油包裹体,第1期包裹体发淡黄色荧光,均一温度为65～85℃;第2期包裹体发蓝白色荧光,均一温度为90～110℃,表明该区新近系油气成藏主要经历了2期油气充注。第1期油气充注距今7.0～3.8Ma,发生于馆陶组沉积末期至明化镇组沉积早期;第2期油气充注距今3.2Ma,并延续至今,发生于明化镇组沉积末期至第四纪。从四扣洼陷到义和庄凸起东部,油气成藏时期变晚,充注期次减少。
Based on the comprehensive analysis of the fluid inclusions in a large number of fluid inclusions, microscopic fluorescence, microscopic temperature measurement and salt measurement, combined with the regional burial history, the hydrocarbon accumulation period and accumulation of the Neogene reservoirs in the east of Yihezhuang uplift Period of the study. The results show that there are two oil inclusions in the Neogene in the eastern part of Yihezhuang uplift. The first phase inclusions have pale yellow fluorescence with a homogenization temperature of 65-85 ℃. The second phase inclusions have blue-white fluorescence with a homogenization temperature of 90 ~ 110 ℃, indicating that the Neogene oil and gas accumulation in this area experienced two stages of hydrocarbon filling. The first period of oil and gas filling 7.0 ~ 3.8Ma, occurred in the sedimentary late Mingguang Formation from the late period of Guantao formation, and the second period of hydrocarbon filling occurred 3.2Ma up to now and occurred in the Minghua Formation Late to Quaternary. From the four buckets to the east of Yihezhuang uplift, the periods of oil and gas accumulation became late and the filling period decreased.