石油学报 ›› 2006, Vol. 27 ›› Issue (3): 1-5.DOI: 10.7623/syxb200603001

• 地质勘探 •    下一篇

渤海湾盆地及鄂尔多斯盆地上古生界-天然气成藏条件分析

郑和荣, 胡宗全   

  1. 中国石油化工股份有限公司石油勘探开发研究院 北京 100083
  • 收稿日期:2005-07-28 修回日期:2005-11-16 出版日期:2006-05-25 发布日期:2010-05-21
  • 作者简介:郑和荣,男,1962年4月生,1983年毕业于成都理工大学,教授级高级工程师,博士,现主要从事石油地质综合研究及勘探部署工作.E-mail:zhengherong@pepris.com
  • 基金资助:
    中国石油化工股份有限公司"中石化环渤海湾地区前第三系油气资源前景"项目(P03076).

Gas pool forming conditions for Bohai Bay Basin and Ordos Basin in the Upper Paleozoic

Zheng Herong, Hu Zongquan   

  1. Research Institute of Exploration and Production, Sinopec, Beijing 100083, China
  • Received:2005-07-28 Revised:2005-11-16 Online:2006-05-25 Published:2010-05-21

摘要: 对渤海湾盆地与鄂尔多斯盆地上古生界烃源岩、储层、盖层、圈闭等成藏要素的地质特征分析结果表明,鄂尔多斯盆地和渤海湾盆地均具有完整的生、储、盖组合和基本的自生自储成藏条件。对成藏条件时间配置关系的对比发现,鄂尔多斯盆地以1个沉降—抬升幕、持续生烃、早期成藏为特征,渤海湾盆地则以多个沉降—抬升幕、二次生烃、晚期成藏为特征。成藏条件的空间配置关系对比表明,鄂尔多斯盆地上古生界烃源岩、储层、盖层在时间上及纵横向上具有连续性,天然气保存条件良好,可形成大面积分布的岩性气藏,资源潜力大。渤海湾盆地上古生界烃源岩、储层、盖层时间连续性较差,天然气需要较大幅度的垂向运移才能成藏,二次生烃区与构造高部位成藏区之间的横向重叠区分布局限,以形成中、小规模但丰度较高的构造气藏为主。

关键词: 渤海湾盆地, 鄂尔多斯盆地, 上古生界, 自生自储成藏, 二次生烃, 天然气成藏条件

Abstract: Analysis of some important factors for forming gas pool such as source rock, reservoir rock, cap rock and trap in the Upper Paleozoic of Ordos Basin and Bohai Bay Basin shows that the two basins are both favorable to form the self-source and self-reservoir gas pools with a complete combination of source rock, reservoir and cap rock. The timing matching relation between the pool-forming factors shows that Ordos Basin is characteristics by single embedding-uplifting episode, continuous hydrocarbon generation and early gas accumulation, while Bohai Bay Basin is characteristics by multiple embedding-uplifting episode, secondary hydrocarbon generation and late gas accumulation. The spatial matching relation of pool-forming factors shows that the Upper Paleozoic in Ordos Basin has timing, vertical and lateral continuity of resource rock, reservoir rock and cap rock. So it has good preserving condition for natural gas and can form big lithologic gas pools distributed in great area. Ordos Basin has a great potential of natural gas resources. Natural gas in Bohai Bay Basin needs vertical migration with a great altitude to become reservoir. Bohai Bay Basin with a limited superposing area of secondary hydrocarbon generating zone and structural accumulation zone in high part can only form structural gas pool with moderate-small size and high gas abundance.

Key words: Bohai Bay Basin, Ordos Basin, the Upper Paleozoic, self-source and self-reservoir pool formation, secondary hydrocarbon generation, gas pool-forming condition

中图分类号: