东营凹陷王庄-宁海地区流体包裹体分析与流体充注研究

利用流体包裹体分析技术，系统地分析了东营凹陷王庄-宁海地区覆盖所有含油层位的流体包裹体样品。包裹体荧光观察和均一温度特征分析揭示了包裹体发育期次为5期，说明该区油藏存在5次流体充注过程；据此确定了备期烃类的成藏期次。东营组沉积时期和明化镇组沉积末期的油气运聚均在成藏后遭受大气淡水淋滤和降解作用。沙三段原油可能经历至少2期稠油化作用。荧光观察进一步证实该区主要发生2期充注、2期成藏。

Fluid inclusion analysis and fluid pack - injection study in Wangzhuang - Ninghai area in Dongying Sag

By the way of fluid inclusion analysis technique, the samples were analyzed systematically which were collected in all oil -bearing horizons of Wangzhuang - Ninhai area. Fluid inclusion fluorescence observation and uniform temperature characteristic analysis indicated that fluid inclusion developed in 5 periods, that is to say,5 fluid pack - injection processes occurred in the oil reservoir in this area, and reservoir forming period - times of various types of the hydrocarbon were determined indirectly. Hydrocarbon migration and accumulation during Dongying sedimentary period and later Minghuazhen sedimentary period both experienced fresh water leaching and degradation after oil reservoir forming. Oil in Es3 might probably experienced 2 stages of vis-cosifying action. Fluorescence observation supports the understanding that there were 2 periods of hydrocarbon pack - injection and oil reservoir forming.