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。
With the rapid development of unconventional oil/gas industry,more and more attention has been paid to finegrained 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 finegrained 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.
作者
姜在兴
王运增
王力
孔祥鑫
杨叶芃
张建国
薛欣宇
Jiang Zaixing;Wang Yunzeng;Wang Li;Kong Xiangxin;Yang Yepeng;Zhang Jianguo;Xue Xinyu(School of Energy Resources,China University of Geosciences(Beijing),Beijing 100083,China;Daqing Tamsag,LLC,PetroChina,Daqing,Heilongjiang 163453,China)
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
2022年第5期1039-1048,共10页
Oil & Gas Geology
基金
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)。
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
provenance
transport-deposition model
type of sweet spots
fine-grained sedimentary rock
shale oil/gas
