渤海海域庙西北洼烃源岩芳烃地球化学特征  

Geochemical characteristics of aromatics from source rocks in Miaoxibei Sag,Bohai Sea area,China

作　　者：崔海忠 王飞龙 王清斌 许鹏 孙龙飞 CUI Haizhong;WANG Feilong;WANG Qingbin;XU Peng;SUN Longfei(Tianjin Branch Company,CNOOC(China)Ltd.,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《成都理工大学学报（自然科学版）》2021年第6期653-660,共8页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家科技重大专项(2016ZX05024-002);中海油“十三五”油气资源评价项目(YXKY-2018-KT-01)。

摘　　要：通过对渤海海域庙西北洼古近系17个烃源岩样品的色谱-质谱分析,系统研究了渤海海域烃源岩的芳烃地球化学特征,并进行了烃源岩沉积环境与成熟度的分析。结果显示:研究区烃源岩样品中检测到的芳烃化合物有170余种,以萘、菲系列化合物为主,不同层段烃源岩芳烃各系列化合物相对含量略有差异。烷基萘及三芴系列化合物分析表明东营组第二段烃源岩沉积时水体还原性较弱,沙河街组第一段烃源岩沉积时水体还原性最强,东营组第三段次之。烷基萘和三芳甾烷参数表明烃源岩样品现今主要处于成熟阶段。Based on GC-MS analysis of 17 source rock samples from Paleogene in Miaoxibei Sag,Bohai Sea area,the aromatic geochemical characteristics of source rocks in Bohai Sea area are systematically studied,and the depositional environment and maturity of source rocks are analyzed.The results show that there are more than 170 kinds of aromatic compounds detected in the source rock samples in the study area,mainly naphthalene and phenanthrene series,and the relative contents of each series of aromatic compounds are slightly different in different layers of source rock.Analysis of alkylnaphthalene and trifluorene series compounds indicates that the water reducing ability of source rocks in the first member of Shahejie Formation(E2s1)is the strongest,the water reducing ability of the third member of Dongying Formation(E3d3)comes the second,and the water reducing ability of source rocks in the second member of Dongying Formation(E3d2)is the weakest.The obtained alkylnaphthalene and triaromatic sterane parameters indicate that the source rock samples are mainly in the mature stage.

关 键 词：渤海海域 庙西北洼 芳烃 烃源岩 地球化学特征 烃源岩成熟度 

分 类 号：TE122.113[石油与天然气工程—油气勘探]