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J4 ›› 2011, Vol. 17 ›› Issue (2): 297-307.

• 油气地质 • 上一篇    下一篇

陆源碎屑与碳酸盐混积岩及其油气地质意义

冯进来, 胡凯, 曹剑, 陈琰, 王龙刚, 张英, 王牧, 赵健   

  1. 南京大学 地球科学与工程学院
  • 收稿日期:2011-01-24 修回日期:2011-04-22 出版日期:2011-06-20 发布日期:2011-06-20
  • 作者简介:冯进来,男,1974年生,在读博士研究生,讲师,专业方向:石油地质学与地球化学;E-mail: fjl_0@126.com
  • 基金资助:

      国家自然科学基金(批准号41072090和40872086)

A Review on Mixed Rocks of Terrigenous Clastics and Carbonates and Their Petroleum-Gas Geological Significance

FENG Jin-Lai, HU Kai, CAO Jian, CHEN Yan, WANG Long-Gang, ZHANG Ying, WANG Mu, ZHAO Jian   

  1. School of Earth Sciences and Engineering, Nanjing University
  • Received:2011-01-24 Revised:2011-04-22 Online:2011-06-20 Published:2011-06-20
  • About author:Feng Jinlai, Ph. D. Candidate. E-mail: fjl_0@126.com

摘要:

:根据混积岩的分类命名、沉积环境和沉积模式等的研究现状及其在石油地质领域的研究进展,综合分析得出:有利
于混合沉积的沉积相主要是滨海相、滨浅湖相,其次是浅海陆棚、陆表海、三角洲相等;对其沉积环境的分析表明,滨海
相混积岩发育的控制因素是潮汐作用、相对比较强的水动力条件以及有利于低等生物发育的浅海环境,控制滨浅湖相混积
岩发育的因素是频繁的湖平面和气候的变化;因此认为深入探讨混积岩的沉积微相及其环境因素,对于完善和统一混积岩
独立的分类方案和命名体系是一有效途径。在此基础上,结合柴西北区古近系和新近系中深层湖相混积岩的研究实例,初
步提出了湖相和海相的混合沉积综合模式示意图;根据与混积岩相关的烃源岩和油气储层的研究资料认为,滨、浅海相和
滨、浅湖等海(湖)陆过渡地带的混合沉积,也可成为优质储层和烃源岩的勘探靶区。

关键词: 混积岩, 沉积相, 沉积环境, 相模式, 优质储层

Abstract:

The present progress in research on mixed rock of terrigenous clastics and carbonates is reviewed in this paper, mainly
including classification,  terminology, depositional environment, depositional modes and petroleum-gas geological significance.
It  is proposed by a comprehensive analysis  that  the depositional  facies  favorable  for  the mixed deposition mainly cover coastal
and shallow-lake  faicies,  following by shallow-sea shelf, shore-shallow  lacustrine and delta  facies. The study on  the depositional
environment  implies  that  the  factors controlling  the development of coastal mixed-rocks  include  tidal effect,  relatively strong
hydrodynamic condition and a shallow sea environment favorable for the living of lower organisms. In contrast, with respect to the
shore-shallow  lacustrine  rocks,  the  factors are  frequent  lake-level and climate changes. Consequently, a deep discussion on  the
depositional micro-facies and associated environmental  factors may be an effective way  to  improve and better  the classification
and  terminology of  the mixed  rocks. Furthermore, a synthetic depositional model  for  the marine and  lacustrine environment  is
suggested based on above-mentioned analyses, combined with case studies in Paleogene and Neogene middle-deep mixed rocks in
the northwestern Qaidam Basin. In addition, the shore-shallow sea and lake areas of mixed deposition can form high-quality targets of

reservoir and source rocks, based on factual research data on source and reservoir sequences associated with mixed rocks.

Key words: mixed , rocks of , terrigenous clastics and carbonates, sedimentary , facies, depositional environment; , facies model;high-quality reservoir

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