吴江;侯读杰;许汇源;许婷;徐发;曹冰;陈晓东;

• 1:中国地质大学(北京)能源学院

• 2:中国地质大学(北京)海相储层演化与油气富集机理教育部重点实验室

• 3:中海石油(中国)有限公司上海分公司

摘要(Abstract)：

为了研究西湖凹陷原油轻烃地球化学特征及区分油气来源,利用气相色谱仪分析西湖凹陷16个原油样品,采用庚烷值与异庚烷值对原油成熟度进行划分.结果表明:西湖凹陷原油富含芳烃和环烷烃,直链烷烃含量低,以陆源有机质贡献为主;原油经历较为明显的蒸发分馏作用;异庚烷值与正庚烷值分别介于0.69~1.90和11.5~21.9之间,原油处于成熟油阶段.西湖凹陷不同地区的原油在轻烃组分上存在明显差异,指示原油母质来源的不同.同时,利用原油C7轻烃三角图和Halpern C7星状图,并结合原油碳同位素与芳烷指数,可以进一步区分各地区原油的母质来源.平湖地区原油主要为来自平湖组煤与泥岩的混合贡献,黄岩地区原油主要为花港组与平湖组泥岩贡献.

关键词(KeyWords)：西湖凹陷;轻烃;油源分析;煤;泥岩;蒸发分馏

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05023003-001-010)

作者(Author):吴江;侯读杰;许汇源;许婷;徐发;曹冰;陈晓东;

Email:

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