西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (2): 8-12.DOI: 10.3863/j.issn.1674-5086.2009.02.003

• 地质勘探 • 上一篇    下一篇

四川盆地下三叠统嘉陵江组储层成岩作用研究

林雄1,2 侯中健1 田景春1   

  1. 1.“油气藏地质及开发工程”国家重点实验室?成都理工大学,四川 成都 610059; 2.成都理工大学地球科学学院,四川 成都 610059
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-04-20 发布日期:2009-04-20

RESEARCH ON DIAGENESIS OF JIALING RIVER FORMATION,LOWER TRIASSIC IN SICHUAN BASIN

LIN Xiong1,2 HOU Zhong-jian1 TIAN Jing-chun1   

  1. 1.State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Chengdu University of Technology,Chengdu Sichuan 610059,China;2.College of Earth Sciences,Chengdu University of Technology,Chengdu Sichuan 610059,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-04-20 Published:2009-04-20

摘要: 在对四川盆地嘉陵江组沉积背景认识的基础上,通过大量岩芯观察、薄片鉴定,进而进行准确定名并按成岩作用是否对孔缝形成有利及对油气生、运、储是否有贡献,将成岩作用划分出建设性成岩作用(白云石化作用,溶蚀作用——膏溶、岩溶作用,构造破裂作用),破坏性成岩作用(压实、收缩和压溶作用,胶结作用,强重结晶作用,自生矿物的形成作用,溶孔及裂缝的充填作用)两种成岩作用。同时对孔隙成因作出分析,且找出岩石学方面的证据。依据镜下薄片鉴定与有机地化手段相结合,对四川盆地下三叠统嘉陵江组成岩作用作详细研究,并对成岩演化史进行恢复。综合考虑多种因素,不同成岩作用形成成岩期次及与孔隙演化关系,对嘉陵江组成岩作用取得了较全面、正确的认识,为全新认识四川盆地嘉陵江组储集空间提供了有力的地质依据。

关键词: 四川盆地, 三叠统, 嘉陵江组, 储层, 成岩作用

Abstract:

RESEARCH ON DIAGENESIS OF JIALING RIVER FORMATION,LOWER TRIASSIC IN SICHUAN BASIN
LIN Xiong1,2,HOU Zhong-jian1,TIAN Jing-chun1(1.State Key Laboratory of Oil and Gas Reservoir Geology and
Exploitation,Chengdu University of Technology,Chengdu Sichuan 610059,China;2.College of Earth Sciences,Chengdu
University of Technology,Chengdu Sichuan 610059,China)
JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION),VOL.31,NO.2,8-12,2009(ISSN 1674-5086,in Chinese)

Abstract:On the basis of the recognition of the sedimentary backgroud of Jialing River Formation in Sichuan Basin,by means of massive cores observation and rock thin sections inspection,the types of rocks are accuratly named,diagenesis is grouped into two categaries,i.e.,constructive one(dolomization,dissolution including gypsum dissolution,casting and tectonic cracking)and destructive one(compression,shrinkage and pressure dissolution,cementation,strong recrystallization ,the formation of new minerals and the filling of dissolved pores and fractures).The cause of pore formation is analyzed and the evidence of lithology is figured out,According to thin section inspection and oganic geoshemistry research,the diagenesis of Jialing River Formation of lower Triassic in Sichuan Basin is studied in detail and the diagenetic evolution history is reduilt.Based on multi-factors,diagenetic stages and pore space evolution,the diagenesis of the Jialing River Formation is correctly and wholly recognized,which provides a solid foundation for understanding the accumulative spaces of the Formation.

Key words: Sichuan Basin, Triassic, Jialing River Formation, reservoir, diagenesis

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