【摘要】 通过偏光显微镜、荧光显微镜和盐水包裹体测温等技术手段,结合成岩作用研究,将大港滩海区沙河街组一段下部有机包裹体划分为:液态烃包裹体、气液态烃包裹体及气态烃包裹体。根据研究区包裹体有机质成熟度的不同,又可将有机包裹体划分出4种类型。与有机包裹体同期的盐水包裹体均一测温数据表明:早期包裹体均一温度为88.1～113℃,中期包裹体均一温度为111.9～125.3℃,晚期包裹体均一温度为122.7～140℃。有机包裹体类型、丰度及其赋存在不同期次矿物中的事实表明:研究区油气运聚及深部流体作用活跃,至少发生过4个大期次的油气运移。更多还原

【Abstract】 After careful examination of thin sections under polarized microscope and fluoroscope, combined with the temperature measurement of the inclusions, it is found that the temperature of the early briny homogenization inclusions are 88.1～113℃, while that of the metaphase are 111.9～125.3℃ and of the late stage are 122.7～140℃. There are three types of organic inclusions in Tanhai zones: (1) liquid hydrocarbon; (2) two phases (liquid-vapor) organic inclusions; (3) vapor hydrocarbon. Based on the maturity of the organic matters in the inclusions, these organic inclusions in the area can be divided into four types. The duration and time of paleopetroleum filling of the reservoirs have been successfully reconstructed from the characters of fluid inclusions identified. The difference in inclusion’s abundance, type and sequence in authigenic mineral indicates that there exist four big stages of hydrocarbon-bearing hot activity in Tanhai zones.更多还原