群体包裹体成分分析法及在沙雅隆起的应用探索

摘要

改进后的群体包裹体成分分析方法,能够同时收集油气包裹体中气体、轻烃和重质烃组分.液氮快速冷冻法能将样品破碎至单个颗粒矿物,较好地保持了矿物晶型;球磨法打开包裹体,不会导致包裹体成分性质的变化.沙雅隆起9个储层样品游离烃、吸附烃和油气包裹体全组分的制备和分析结果表明,根据包裹体烃中气体和轻烃可大致判断样品的成熟度;3种赋存状态液态烃的生物标志物和碳同位素分析结果揭示了沉积环境和油气成藏过程的差异.%The improved composition analysis method for grouped fluid inclusion may collect gas, light and heavy hydrocarbons at the same time.Liquid nitrogen is used to freeze samples and break them into single minerals, keeping crystal form unchanged.Ball milling is applied to open fluid inclusion whose components and properties are protected during this process.Composition analyses of free hydrocarbon,adsorbed hydrocarbon and petroleum inclusion in 9 reservoir samples from the Shaya Uplift have indicated that, the compositions of gas and light hydrocarbon in inclusions may be used judge sample maturity.The biomarker and carbon isotope of liquid hydrocarbons may show the differences in sedimentary environment and accumulation.