APPLICATION OF ORGANIC INCLUSION TO STUDY OF HYDROCARBON MIGRATION AND ACCUMULATION-A CASE STUDY OF THE GAOYOU SAG IN THE SUBEI BASIN
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摘要: 根据储层有机包裹体分布、相态类型、荧光及同期盐水包裹体均一温度等资料研究了苏北盆地高邮凹陷上、下两套含油气系统的油气成熟度、油气运移期次;通过有机包裹体地球化学成分分析对上、下两套含油气系统的油源及性质进行了对比研究,并利用有机包裹体中的生物标记物参数对SN地区的下含油气系统油气运移方向及成藏机理进行了研究,其结论与含氮化合物资料分析结果相吻合,从而为该区油气运聚提供了更直接的微观证据和研究手段。这一成功研究实例表明,随着流体包裹体测试技术的提高,有机包裹体分析在含油气盆地油气运聚方面的研究具有更广阔的应用前景。Abstract: The oil and gas maturity, stages of petroleum migration and accumulation of upper and lower petroleum systems of Gaoyou Sag in Subei Basin are determined based on the data of the occurrence, phase types and fluorescence of organic inclusion and the homogenization temperature of synchronous saltwater inclusion. The oil sources and its characters of the two petroleum systems are discussed and compared by geochemical analysis of organic inclusion compositions. The migration direction and accumulation mechanism of lower petroleum system in SN region are studied according to the biomarkers data of organic inclusion and its results is in accordance with that of the analysis of pyrrolic nitrogen compounds. So that such study provides a kind of more direct microscopic proof and method for hydrocarbon migration and accumlation. The successed case study also indicates that organic inclusion analysis has more wide prospect in the study of migration and accumulation in petroliferous basin.
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