石油学报 ›› 2025, Vol. 46 ›› Issue (6): 1108-1125.DOI: 10.7623/syxb202506006

• 地质勘探 • 上一篇    

渤海湾盆地冀中坳陷保定凹陷—饶阳凹陷全油气系统特征与成藏模式

李熹微1,2, 杨博3,4,5, 姜福杰3,4, 陈柯童1, 李泳希3,4, 史原鹏1, 李晓燕1, 张霁潮1, 马学峰1, 李奔1, 张瑞雪1, 许梦婷1, 臧丽媛1, 赵懿1   

  1. 1. 中国石油华北油田公司 河北沧州 062550;
    2. 东北石油大学地球科学学院 黑龙江大庆 163318;
    3. 油气资源与工程全国重点实验室, 中国石油大学(北京) 北京 102249;
    4. 中国石油大学(北京)地球科学学院 北京 102249;
    5. 中国石油大学(北京)海南研究院 海南三亚 572025
  • 收稿日期:2024-11-28 修回日期:2025-03-24 发布日期:2025-06-28
  • 通讯作者: 姜福杰,男,1979年12月生,2008年获中国石油大学(北京)博士学位,现为中国石油大学(北京)地球科学学院党委书记、教授、博士生导师,主要从事油气成藏机理与分布规律的研究工作。Email:jiangfj@cup.edu.cn
  • 作者简介:李熹微,男,1985年11月生,2011年获成都理工大学硕士学位,现为中国石油华北油田公司勘探事业部总地质师、高级工程师,主要从事油气勘探研究工作。Email:yjy_lixw@petrochina.com.cn
  • 基金资助:
    国家科技重大专项"低勘探程度凹陷油气成藏条件与突破方向"(2024ZD1400106)资助。

Characteristics and accumulation model of the Whole Petroleum System in Baoding-Raoyang sags,Jizhong depression,Bohai Bay Basin

Li Xiwei1,2, Yang Bo3,4,5, Jiang Fujie3,4, Chen Ketong1, Li Yongxi3,4, Shi Yuanpeng1, Li Xiaoyan1, Zhang Jichao1, Ma Xuefeng1, Li Ben1, Zhang Ruixue1, Xu Mengting1, Zang Liyuan1, Zhao Yi1   

  1. 1. PetroChina Huabei Oilfield Company, Hebei Cangzhou 062550, China;
    2. School of Earth Sciences, Northeast Petroleum University, Heilongjiang Daqing 163318;
    3. State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum(Beijing), Beijing 102249, China;
    4. College of Geosciences, China University of Petroleum, Beijing 102249, China;
    5. Hainan Research Institute, China University of Petroleum, Hainan Sanya 572025, China
  • Received:2024-11-28 Revised:2025-03-24 Published:2025-06-28

摘要: 为了对渤海湾盆地冀中坳陷保定凹陷和饶阳凹陷的勘探方向提供理论指导,以全油气系统理论为指导,结合研究区的油气地质特征对保定凹陷和饶阳凹陷的油气资源类型和运移分布特征进行了分析。基于不同层系烃源岩的生、排烃模型,计算了各类油气的资源量,建立了不同层系的油气成藏模式。研究结果表明:保定凹陷沙河街组一段烃源岩的油气具有早生早排的特征,在镜质体反射率为0.35%和0.45%时分别达到生烃门限和排烃门限;保定凹陷和饶阳凹陷的全油气系统在纵向上既有各自的边界,又在高阳低凸起附近达到统一,高阳断层附近的油气藏是二者相互影响的结果;保定凹陷和饶阳凹陷不同层系烃源岩的总生烃量为73.94×108t,而页岩中的滞留烃量达48.67×108t,有巨大的勘探潜力;综合考虑全油气系统理论方法的划分结果,形成了保定凹陷渐新统东营组浅层"双源供烃、断层调整、浅层富集"的油气成藏模式、饶阳凹陷中深层"沿斜坡-断层运移、环洼陷分布、潜山局部富集"的油气成藏模式,以及保定凹陷—饶阳凹陷致密油气、页岩油气"近源运移、源内滞留"的成藏模式。

关键词: 全油气系统理论, 生烃潜力法, 油气成藏模式, 保定凹陷—饶阳凹陷, 冀中坳陷, 渤海湾盆地

Abstract: This study aims to provide theoretical guidance for the exploration direction in Baoding sag and Raoyang sag of Jizhong depression, Bohai Bay Basin. Specifically, the overall oil and gas resource types and migration distribution characteristics of both sags were analyzed based on the Whole Petroleum System theory in combination with regional hydrocarbon geological features. Through hydrocarbon generation-expulsion modelling of source rocks in different strata, the resource potential of various hydrocarbons was calculated, and the models of hydrocarbon accumulation in different formations were established. The results show as follows. (1)The source rocks of Member 1 of Shahejie Formation in Baoding sag are characterized by early hydrocarbon generation and expulsion, reaching the hydrocarbon generation and expulsion thresholds at vitrinite reflectance values of 0.35% and 0.45%, respectively. (2)The Whole Petroleum System in Baoding-Raoyang sags have their own vertical boundaries and converge near the Gaoyang low-uplift, which jointly contribute to the development of oil and gas reservoirs near Gaoyang fault. (3)The total hydrocarbon yield from different source rocks of Baoding-Raoyang sags is 73.94×108t, with the retained hydrocarbons of 48.67×108t in shale, indicating huge exploration potential. (4)Comprehensively considering the Whole Petroleum System, the accumulation modes are divided as the shallow hydrocarbon accumulation model characterized by dual source hydrocarbon supply, fault adjustment, and shallow enrichment in Dongying Formation in Baoding sag, the middle and deep hydrocarbon enrichment mode characterized by migration along slopes and faults, distribution around subsags, and local enrichment in buried hills in Raoyang sag, and the oil and gas enrichment model characterized by near-source migration and intra-source accumulation in both tight and shale reservoirs.

Key words: Whole Petroleum System theory, hydrocarbon generation potential method, hydrocarbon accumulation model, Baoding-Raoyang sags, Jizhong depression, Bohai Bay Basin

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