蠡县斜坡北段储层流体包裹体特征及成藏时期

Fluid Inclusions Characteristics and Hydrocarbon Accumulation Period of the Reservoir in the Northern Section,Lixian Slope

饶阳凹陷西部蠡县斜坡是在前古近纪古隆起上发育起来的继承性宽缓沉积斜坡，沙河街组储层发育烃类和盐水包裹体。通过储层流体包裹体的系统分析和均一温度一精细埋藏史投影，确定蠡县斜坡北段沙一下亚段油气成藏期次和时期，为分析成藏过程及油气分布规律、指导油气勘探提供了依据。蠡县斜坡北段沙一下亚段地质历史时期发生过2期油气充注：发黄绿色荧光的油包裹体均一温度在80~90℃之间，对应的成藏时间在7．5～5．5Ma之间；发蓝绿色荧光的油包裹体均一温度在105～115℃之间，成藏时间在2～0Ma之间。

Lixian slope in west of Raoyang Depression, an inheritede and extensively wide and gently depo- sitional slope, was develped in ancient uplift of anterior Paleogene, where a large number of hydrocarbon inclusions and salt-water inclusions are discovered in reservoir of Shaheiie Formation. The study of this slope by using fluid inclusions method of system analysis and homogenization temperature-fine burial histo- ry projection to study hydrocarbon accumulation period and the time of stage in the study area provides ba- sis for the analysis of accumulation process, distribution of hydrocarbon and petroleum exploration. Sub- segment of the 1st member of Shahejie Formation of northern Lixian slope in geological history, has two periods of hydrocarbon filling, one with the homogenization temperature of fluorescence color of yellow- green being 80-90℃ and buried time 7.5-5.5 Ma; and the other with the homogenization temperature of fluorescence color of blue--reen being 105-115℃ and its buried time 2-0 Ma.