渤海湾盆地黄骅坳陷湖相碳酸盐岩微量元素特征及沉积环境

王永炜; 李荣西; 高胜利; 高鹏鹏; 李泽敏; 高潮; 付明义

doi:10.11781/sysydz201706849

渤海湾盆地黄骅坳陷湖相碳酸盐岩微量元素特征及沉积环境

doi: 10.11781/sysydz201706849

1.
长安大学, 西安 710054
2. 陕西延长石油(集团)有限责任公司研究院, 西安 710075
3. 西安石油大学, 西安 710065

基金项目: 国家科技重大专项项目（2008ZX05005-004-007HZ）资助。

详细信息

作者简介:
王永炜(1965-),男,博士生,高级工程师,从事油气勘探开发综合研究。E-mail:wangyw7879@163.com。

通讯作者:
高胜利(1974-),男,博士,教授级高级工程师,从事石油及天然气地质研究。E-mail:001gsl@163.com。

中图分类号: TE122.221
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出版历程
- 收稿日期: 2017-03-20
- 修回日期: 2017-10-10
- 刊出日期: 2017-11-28

Trace element characteristics and sedimentary environment of lacustrine carbonate rocks in the Huanghua Depression, Bohai Bay Basin

1.
Chang'an University, Xi'an, Shaanxi 710054, China
2. Institute of Shaanxi Yanchang Petroleum(Group) Co Ltd, Xi'an, Shaanxi 710075, China
3. Xi'an Shiyou University, Xi'an, Shaanxi 710065, China

摘要

摘要: 渤海湾盆地黄骅坳陷沙一下段主要以碳酸盐岩储层为主，是区内主要油气储层。黄骅坳陷孔店-羊三木地区、齐家务地区和歧南地区沙一下段微量元素特征表明，其含量及分布在不同区带差异明显，但Sr、Ba、Mn等元素的含量在各区较为接近，而Ni、Pb、Zn等元素的含量由齐家务向孔店-羊三木一带趋于减少，反映了黄骅坳陷湖盆碳酸盐岩在沉积成岩过程中沉积环境条件的变化。齐家务地区B元素含量为（7.55~92.8）×10^-6，平均42.8×10^-6，孔店-羊三木地区B元素含量为（7.2~97.4）×10^-6，平均45.21×10^-6，反映出湖盆水体在沙一下段沉积期均具有咸化与淡化的交替过程。孔店-羊三木地区沙一下段各类样品中的Ti含量为（946~3 495）×10^-6，平均2 319×10^-6，显示近物源的特点。V/（V+Ni）比值变化显示出全区强还原环境的特点，同时Th/U比值较低的特征，说明湖盆水体盐度较高或受到了入侵海水的影响。
- 微量元素 /
- 湖相碳酸盐岩 /
- 沉积环境 /
- 沙河街组 /
- 黄骅坳陷 /
- 渤海湾盆地
Abstract: Carbonate rocks dominate in the lower part of the first member of Shahejie Formation in the Huanghua Depression, Bohai Bay Basin. The geochemical characteristics of trace elements in Kongdian-Yangsanmu, Qijiawu and Qinan show that the content and distribution of trace elements varied in different pays, but those of Sr, Ba, V, Mn, Th, U were similar, and the contents of Ni, Pb, Zn and others tended to decrease from Qijiawu to Yangsanmu, indicating environmental changes during the diagenesis process. The B content varied (7.5-92.8)×10^-6 with an average of 42.8×10^-6 in Qijiawu, and varied (7.2-97.4)×10^-6 with an average of 45.21×10^-6 in Kongdian-Yangsanmu, indicating an alternating process of saline to fresh water environments. The Ti content varied (946-3 496)×10^-6 and averaged 2 319×10^-6 in the lower part of the first member of Shahejie Formation from Kongdian to Yangsanmu, showing nearby provenance characteristics. The V/(V+Ni) ratio indicated strong reducingenvironment in the study area, and the low Th/U ratio showed a higher salinity of lake water or the influence of seawater intrusion.
- trace element /
- lacustrine carbonate rock /
- depositional environment /
- Shahejie Formation /
- Huanghua Depression /
- Bohai Bay Basin

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