杨希冰;胡林;金秋月;

• 1:中海石油(中国)有限公司湛江分公司

摘要(Abstract)：

分析乌石凹陷原油样品地球化学特征,根据特征生物标志物指标将原油划分为3种类型,即Ⅰ类、Ⅱ类和Ⅲ类。原油间异戊二烯烷烃、4-甲基甾烷和奥利烷等生物标志化合物呈现不同的组成特征。油源对比表明,乌石中—东区Ⅰ类原油主要来源于流二段上部源岩,Ⅱ类和Ⅲ类原油主要来源于流二段下部源岩。分析油藏砂岩储层流体包裹体,统计包裹体均一温度测试结果,结合埋藏—热演化史模拟进行对比。结果表明:乌石凹陷不同类型原油成藏时间存在差异,Ⅰ类原油呈晚期成藏的特征,成藏时间为从灯楼角组到望楼港组沉积时期;Ⅱ类原油为早期成藏的特征,成藏时间从下洋组到角尾组沉积时期;Ⅲ类原油成藏时间为从角尾组到灯楼角组沉积时期。乌石凹陷油气来源及油气成藏时间研究可为该区优化、进一步扩大勘探成果提供依据。

关键词(KeyWords)：乌石凹陷;原油;油气来源;流体包裹体;成藏时间

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2016ZX05024-006,2016ZX05024-002-009)

作者(Author):杨希冰;胡林;金秋月;

Email:

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