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东海盆地西湖凹陷天然气及原油地化特征分析

曹倩 徐旭辉 曾广东 周小进 江平 王岭

曹倩, 徐旭辉, 曾广东, 周小进, 江平, 王岭. 东海盆地西湖凹陷天然气及原油地化特征分析[J]. 石油实验地质, 2015, 37(5): 627-632. doi: 10.11781/sysydz201505627
引用本文: 曹倩, 徐旭辉, 曾广东, 周小进, 江平, 王岭. 东海盆地西湖凹陷天然气及原油地化特征分析[J]. 石油实验地质, 2015, 37(5): 627-632. doi: 10.11781/sysydz201505627
Cao Qian, Xu Xuhui, Zeng Guangdong, Zhou Xiaojin, Jiang Ping, Wang Ling. Geochemical characteristicsof natural gases and crude oils in the Xihu Sag of East china Sea Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(5): 627-632. doi: 10.11781/sysydz201505627
Citation: Cao Qian, Xu Xuhui, Zeng Guangdong, Zhou Xiaojin, Jiang Ping, Wang Ling. Geochemical characteristicsof natural gases and crude oils in the Xihu Sag of East china Sea Basin[J]. PETROLEUM GEOLOGY & EXPERIMENT, 2015, 37(5): 627-632. doi: 10.11781/sysydz201505627

东海盆地西湖凹陷天然气及原油地化特征分析

doi: 10.11781/sysydz201505627
基金项目: 中海石油(中国)有限公司科研项目"东海西湖凹陷中央背斜带成藏主控因素研究"(34000000-12-ZC0613-0004)资助。
详细信息
    作者简介:

    曹倩(1983—),女,硕士,工程师,从事油气成藏的研究工作。E-mail:caoqian.syky@sinopec.com。

  • 中图分类号: TE122.1+1

Geochemical characteristicsof natural gases and crude oils in the Xihu Sag of East china Sea Basin

  • 摘要: 对西湖凹陷天然气组分、轻烃、碳同位素等特征进行了系统地分析,结果表明天然气类型以煤型气与油型气的混源气为主且偏煤型气,其演化成熟度较高,属于Ⅱ型偏煤型母质成熟—过熟阶段的产物,主要来源为平湖组及其下部的烃源岩。通过对原油的物性、饱和烃、碳同位素、轻烃等特征的研究表明,西湖凹陷原油可分为轻质原油与凝析油2种类型。这2种类型原油物性一致,母质来源均有煤的贡献,形成于弱还原的淡水湖沼环境;原油可以分为成熟(Ro<1.0%)和高熟—过熟(Ro=1.3%~2.0%)2种类型。

     

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出版历程
  • 收稿日期:  2014-11-10
  • 修回日期:  2015-08-05
  • 刊出日期:  2015-09-28

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