石油与天然气地质 ›› 2022, Vol. 43 ›› Issue (5): 1039-1048.doi: 10.11743/ogg20220503

• 油气地质 • 上一篇    下一篇

陆相细粒沉积岩物质来源、搬运-沉积机制及多源油气甜点

姜在兴1(), 王运增2, 王力1, 孔祥鑫1, 杨叶芃1, 张建国1, 薛欣宇1   

  1. 1.中国地质大学(北京) 能源学院,北京 100083
    2.中国石油 大庆塔木察格有限责任公司,黑龙江 大庆 163453
  • 收稿日期:2022-03-19 修回日期:2022-07-22 出版日期:2022-10-01 发布日期:2022-09-02
  • 第一作者简介:姜在兴(1962—),男,博士、教授,油气沉积地质学。E?mail: jiangzx@cugb.edu.cn
  • 基金项目:
    国家科技重大专项(2017ZX05009-002);国家自然科学基金面上项目(41772090);中国博士后科学基金项目(2020M680624)

Review on provenance, transport-sedimentation dynamics and multi-source hydrocarbon sweet spots of continental fine-grained sedimentary rocks

Zaixing Jiang1(), Yunzeng Wang2, Li Wang1, Xiangxin Kong1, Yepeng Yang1, Jianguo Zhang1, Xinyu Xue1   

  1. 1.School of Energy Resources,China University of Geosciences (Beijing),Beijing 100083,China
    2.Daqing Tamsag,LLC,PetroChina,Daqing,Heilongjiang 163453,China
  • Received:2022-03-19 Revised:2022-07-22 Online:2022-10-01 Published:2022-09-02

摘要:

伴随着非常规油气工业的蓬勃发展,细粒沉积岩研究受到广泛关注。基于近年来国内外学者对细粒沉积岩的研究认识,对陆相湖盆细粒沉积岩的岩石类型、物质来源、搬运-沉积机制和油气甜点特征进行了系统的阐述。细粒沉积岩的物质来源包括陆源、内源、火山源及混合来源。细粒物质可以通过悬浮沉降、重力流、火山-热液活动和盆内生物化学作用等方式沉积下来,且在成岩前可能发生原地沉积或湖盆内短距离的搬运和再沉积作用。细粒沉积岩在沉积特征、孔渗条件、油气富集机制等方面与细粒物质来源密切相关。对细粒沉积岩物质来源和搬运-沉积动力学模式的研究对页岩油气勘探开发具有重要的指导作用。

关键词: 物质来源, 搬运-沉积模式, 甜点类型, 细粒沉积岩, 页岩油气

Abstract:

With the rapid development of unconventional oil/gas industry, more and more attention has been paid to fine-grained sedimentary rocks. The study expounds the rock types, provenances, transport-sedimentation dynamics and hydrocarbon sweet spots of fine-grained sedimentary rocks of continental lacustrine facies in a systematic manner, based on the researches of fine-grained sedimentary rocks in recent years both at home and abroad. The accumulation of fine-grained sedimentary rocks in the continental lacustrine basin is mainly a result of multi-source supply of terrestrial, intrabasinal authigenic, volcanic and mixed-source sediments. The deposition mechanisms of fine-grained sediments include suspended sedimentation, gravity flow, volcanic, hydrothermal and intrabasinal biochemical activities, and the sediments may have undergone autochthonous re-deposition or re-deposition after short-distance transport before becoming consolidated rock. The provenance of fine-grained sediments plays a major role in determining the sedimentary characteristics, physical qualities, and hydrocarbon enrichment mechanism of the fine-grained sedimentary rocks. The study of provenance and transport-deposition dynamics of fine-grained sedimentary rocks is of great guiding value to shale oil/gas exploration and development.

Key words: provenance, transport-deposition model, type of sweet spots, fine-grained sedimentary rock, shale oil/gas

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