论文详情
东海海礁凸起及邻近海区油气表层地球化学勘查
石油实验地质
2003年 25卷 第2期
阅读：182
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Title
OIL AND GAS SURFACE GEOCHEMICAL EXPLORATION IN THE HAIJIAO UPLIFT AND ITS NEIGHBOURING OF THE EAST CHINA SEA
单位
中国石化 上海海洋地质局, 上海 201208
Organization
No.1 Marine Geological Investigation Party, Shanghai Bureau of Marine Geology, SINOPEC, Shanghai 201208, China
摘要
海礁凸起和浙闽隆褶区油气化探异常为其深部前新生代沉积盆地油气藏物质向上渗透的结果。沉积物酸解烃湿度系数和δ13C1分析数据表明,钱塘凹陷、舟山群岛及上海附近海域沉积物中散布的气体,主要为热解成因的深层天然气。与西湖凹陷、海礁凸起的天然气类同,主要来自深部的过成熟天然气。浙闽隆褶区热解成因的天然气烷烃丰度高于平湖五井烷烃丰度。
Abstract
The hydrocarbon geochemical anomalies in the Haijiao Uplift and the Zhejiang Fujian Upfold are the result of upwards seepage of hydrocarbon in the deep pre Cenozoic sedimentary basin.The analytical data of wetness coefficient of acid extracted hydrocarbon of sediment and its δ13 C1 shows that the gas in Qiantang Sag,the Zhoushan Islands and the offshore area around Shanghai are mainly from the thermal cracking of natural gas in deep.They are similar with the gas in Xihu Sag and the Haijiao Uplift which is the over matured gas of deep part.The alkane hydrocarbon abundance index of the gas from Zhejiang Fujian Upfold is higher than that from Pinghu 5 well.
关键词：
地球化学勘探;
油气;
海礁凸起;
东海;
Keywords:
geochemical exploration;
oil and gas;
the Haijiao Uplift;
the East China Sea;
基金项目
上海海洋地质调查局局级科研项目(92018).
DOI
https://doi.org/10.11781/sysydz200302190
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