王建光, 张大志, 石记鹏,等.渤海湾盆地外围凹陷含油气特征与资源潜力评价[J].河南理工大学学报（自然科学版）,2026,45(3):154-162.

WANG J G, ZHANG D Z, SHI J P,et al.Hydrocarbon-bearing characteristics and resource potential evaluation of peripheral depressions in the Bohai Bay Basin[J].Journal of Henan Polytechnic University(Natural Science) ,2026,45(3):154-162.

渤海湾盆地外围凹陷含油气特征与资源潜力评价

王建光1, 张大志1, 石记鹏1, 刘海涛2, 张致远1, 张航1, 李婷1, 何山1

1.河南省地质矿产勘查开发局第一地质勘查院，河南 郑州 450000；2.中国石油勘探开发研究院，北京  100080

摘要:目的 为进一步明确渤海湾盆地外围凹陷的含油气特征和资源潜力分布情况，开展渤海湾盆地外围凹陷含油气特征与资源潜力评价研究。  方法 基于地质结构、沉降类型和成藏组合特征对渤海湾盆地外围凹陷的含油气特征进行对比分析，并根据烃源岩条件、储集层条件、圈闭条件、油气保存条件和圈闭形成与生烃高峰期时空匹配关系建立渤海湾盆地外围凹陷资源潜力的分级评价标准，对渤海湾盆地外围凹陷的资源潜力进行分级评价。  结果 结果表明：富油气凹陷以面积大、烃源岩埋藏深的箕状Ⅱ型凹陷为主，外围凹陷以面积较小的箕状Ⅰ型凹陷为主；含油气情况相对较差；外围凹陷一般为早期强烈断陷型，生烃能力差，油气富集程度偏低，一般为1或2套成藏组合相对含油，富油凹陷三大成藏组合普遍存在。武清凹陷和盐山凹陷为Ⅰ类凹陷，资源潜力大，勘探开发前景好，为下步油气增储的靶向区域；乐亭凹陷、大厂凹陷、南宫凹陷、保定凹陷、石家庄凹陷和涧河凹陷为Ⅱ类凹陷，资源潜力一般，具有一定的勘探开发价值；吴桥凹陷、北京凹陷、徐水凹陷和昌黎凹陷为Ⅲ类凹陷，油气成藏条件差，资源潜力小，勘探开发难度大。  结论 渤海湾盆地外围凹陷的剩余油气资源依然丰富，具备形成规模油气藏的有利条件，有望成为未来油气勘探的重要接替领域。

关键词:渤海湾盆地;外围凹陷;含油气特征;油气成藏条件;烃源岩;资源潜力

doi:10.16186/j.cnki.1673-9787.2024040018

基金项目:国家重点研发专项项目（2023YFF0804303）

收稿日期:2024/04/11

修回日期:2024/09/19

出版日期:2026/04/28

Hydrocarbon-bearing characteristics and resource potential evaluation of peripheral depressions in the Bohai Bay Basin

Wang Jianguang1, Zhang Dazhi1, Shi Jipeng1, Liu Haitao2, Zhang Zhiyuan1, Zhang Hang1, Li Ting1, He Shan1

1.The First Geological Exploration Institute of Henan Provincial Bureau of Geology and Mineral Exploration and Development， Zhengzhou  450000， Henan， China；2.Research Institute of Petroleum Exploration & Development， Beijing  100080， China

Abstract: Objectives To further clarify the hydrocarbon-bearing characteristics and the distribution of resource potential in the peripheral depressions of the Bohai Bay Basin，an evaluation study was conducted.  Methods A comparative analysis of the hydrocarbon-bearing characteristics of the peripheral depressions in the Bohai Bay Basin was conducted，based on geological structures，subsidence types，and reservoir-forming assemblages. Furthermore，a graded evaluation standard for the resource potential of these peripheral depressions was established，taking into account source rock conditions， reservoir conditions， trap conditions， hydrocarbon preservation conditions，and the spatiotemporal matching relationship between trap formation and hydrocarbon generation peak. This standard was then applied to conduct a graded evaluation of the resource potential of the peripheral depressions in the Bohai Bay Basin.  Results The results show that hydrocarbon-rich depressions are mainly large-area，deeply buried，dustpan-shaped Type Ⅱ depressions，while peripheral depressions are mainly small-area， dustpan-shaped Type I depressions with relatively poor hydrocarbon-bearing conditions. Peripheral depressions are generally early-stage intensely faulted depressions with poor hydrocarbon generation capacity and low hydrocarbon enrichment degree. They often contain one or two relatively oil-bearing reservoir-forming assemblages，while hydrocarbon-rich depressions commonly have three such assemblages. The Wuqing and Yanshan depressions are classified as Type I depressions with large resource potential and good exploration and development prospects，serving as target areas for future oil and gas reserve growth. The Laoting， Dachang， Nangong， Baoding， Shijiazhuang，and Jianhe depressions are classified as Type Ⅱ depressions with moderate resource potential and certain exploration and development value. The Wuqiao， Beijing， Xushui， and Changli depressions are classified as Type Ⅲ depressions with poor hydrocarbon accumulation conditions， small resource potential，and great difficulty in exploration and development.  Conclusions The peripheral depressions of the Bohai Bay Basin harbor abundant residual hydrocarbon resources，presenting favorable conditions for the formation of substantial hydrocarbon reservoirs. They are expected to become important successor areas for future hydrocarbon exploration.

Key words:Bohai Bay Basin;peripheral depressions;hydrocarbon-bearing characteristics;conditions for hydrocarbon accumulation;source rocks;resource potential