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天然气地球科学 ›› 2012, Vol. 23 ›› Issue (3): 520–525.doi: 10.11764/j.issn.1672-1926.2012.03.520

• 天然气地质学 • 上一篇    下一篇

黄桥地区深源CO2对二叠系—三叠系油气成藏的影响

 黄俨然, 张枝焕, 王安龙, 黎琼, 藏春娟   

  1. 1.中国石油大学（北京）地球科学学院，北京 102249；
    2.湖南科技大学煤炭资源清洁利用与矿山环境保护湖南省重点实验室，湖南 湘潭 411201；
    3.中国石化股份公司华东分公司，江苏 南京 210011
  • 收稿日期:2011-12-05 修回日期:2012-02-11 出版日期:2012-06-10 发布日期:2012-06-10
  • 通讯作者: 黄俨然hyanran2006@163.com. E-mail:hyanran2006@163.com.
  • 作者简介:黄俨然（1983-），男，湖北黄冈人，博士研究生，主要从事石油地质和油藏地球化学研究. E-mail：hyanran2006@163.com.
  • 基金资助:

    国家重大专项项目（编号：2008ZX05002-006）资助.

Deep-sourced CO2 Influence on Permian and Triassic Oil and Gas Accumulation in Huangqiao Region

 HUANG  Yan-Ran, ZHANG  Qi-Huan, WANG  An-Long, LI  Qiong, CANG  Chun-Juan   

  1. 1.Earth Science College of China University of Petroleum(Beijing),Beijing 102249,China; 2.Hunan Province 
    Key Laboratory of Coal Resources Clean\|utilization and Mine Environment Protection,Hunan University
    of Science and Technology,Xiangtan 411201,China;3.Sinopec East China Company,Nanjing 210011,China
  • Received:2011-12-05 Revised:2012-02-11 Online:2012-06-10 Published:2012-06-10

PDF (PC)

561

摘要：

黄桥地区CO2气田是我国陆上规模最大的CO2气田之一，主要是由古近纪以后岩浆火山活动地幔物质上涌形成的。该气田平面上临近深大断裂的交会部位，纵向上从下古生界到新近系盐城组都有分布。CO2是在相对较高温度下快速成藏的，且成藏时间晚于油气，二叠系—三叠系油气藏则以自生自储为主要特征。富含CO2的层位与主要的油气显示层位并不一致，CO2在向上运移的过程中很难将先进入储层的油气驱替出来，特别是在二叠系龙潭组致密的砂岩储层中。油气藏保存条件良好，但高温CO2带来的热量使原油大多热分解转化为轻质油，其品质好黏度低，有利于在物性相对较好的构造高点富集成藏。

关键词: 黄桥地区, CO2, 油气来源, 成藏过程

Abstract:

Huangqiao gas field is one of the largest CO2 -enriched gas fields in the China land.It was mainly formed by mantle material upwelling after the magma and volcanic activity in Neocene.The CO2 -enriched gas field is located horizontally in the adjacent intersection of the great deep fault and distributed from early Paleozoic to Neocene Yancheng Formation.CO2 was rapidly accumulated at relatively high temperature conditions,and the time of CO2 accumulation is later than that of oil and gas accumulation.The Permian and Triassic oil and gas accumulation is characterized as self generation and self storage.The CO2 enriched layers are inconsistent with the oil-gas showing ones.During the upward migration process of CO2 ,it is difficult forCO2  to expulse out of the oil and gas from the early reservoir,specially from the tight sandstone reservoir in Permian Longtan Formation.The preservation conditions of oil and gas is good,but the high abundance heat energy which is associated with deepCO2  migration at high temperature makes the crude oil be cracked thermally into the condensates with high quality and low viscosity,thus,it is beneficial for oil and gas accumulation at top of structural high part with good quality reservoirs.

Key words: Huangqiao area, Carbon dioxide, Oil sources, Accumulation history.

中图分类号: 

  • TE122.1

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