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通过单偏光观察和显微冷热台测温观察等方法,对鄂尔多斯盆地庆阳地区山西组内流体包裹体进行系统分析研究,归纳流体包裹体岩相学、均一温度和冰点温度等特征,结合盆地埋藏史分析推测储层内烃类充注史。研究发现:鄂尔多斯盆地庆阳地区山西组内盐水包裹体均一温度范围为100℃~170℃,综合分析结果显示其内天然气运移成藏是一个漫长且连续的过程,并以早白垩世为天然气的主要充注期。
The fluid inclusions in Shanxi Formation in Qingyang area, Ordos Basin, are systematically analyzed by single polarization observation and microthermometer observation, and the lithofacies, homogenization temperature and freezing temperature of fluid inclusions are summarized. Basin burial history analysis presumed the history of hydrocarbon filling in the reservoir. The results show that the homogenization temperature range of brine inclusions in Shanxi Formation in Qingyang area, Ordos Basin, is 100 ℃ ~ 170 ℃. The comprehensive analysis shows that the migration and accumulation of intra-natural gas are a long and continuous process, and the Early Cretaceous is natural gas The main filling period.