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天然气地球科学

• 天然气地质学 • 上一篇    下一篇

川东北地区石炭系油气成藏模式

吴警，史建南，郑荣才，文华国，罗韧，胡承飞   

  1. 1.成都理工大学，四川 成都 610059；
    2.中国石油西南油气田分公司川东北气矿，四川 达州 635000
  • 收稿日期:2014-12-01 修回日期:2015-01-02 出版日期:2015-07-10 发布日期:2015-07-10
  • 通讯作者: 史建南(1975-)，男，辽宁盘锦人，副教授，硕士生导师，主要从事油气地质学研究.E-mail：Shijiannan07@cdut.cn.
  • 作者简介:吴警(1990-)，女，江苏徐州人，硕士研究生，主要从事油气成藏机理与分布规律研究.E-mail：wujing_jy@163.com.
  • 基金资助:

    国家自然科学基金项目(编号：41172120)资助.

Hydrocarbon Accumulation Modes of Carboniferous in Northeastern Sichuan Basin

WU Jing，SHI Jian-nan，ZHENG Rong-cai，WEN Hua-guo，LUO Ren，HU Cheng-fei   

  1. 1.Chengdu University of Technology,Chengdu 610059,China;
    2.PetroChina Southwest Oil and Gas Field Company in Northeast Sichuan,Dazhou 635000,China
  • Received:2014-12-01 Revised:2015-01-02 Online:2015-07-10 Published:2015-07-10

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摘要：

明确川东北地区石炭系油气充注特征、成藏机理有助于对其含油气系统进行深入认识。应用成藏动力学理论，以典型油气藏解剖为基础，以流体来源及其流动样式为核心，采用流体定年技术和油气运移方向示踪技术，通过样品分析测试、数值模拟实验和成藏机理的综合研究表明：志留系有机质是主要的供烃源，黄龙组裂缝—溶孔状白云岩为有利储集体，印支—燕山期地层—构造复合型圈闭提供了聚集空间|黄龙组主要存在210Ma和170Ma 2期油气充注过程，多期活动的构造裂缝和高压水力破裂缝与S/C不整合及C/P不整合构成了网状输导体系，从下至上的垂向运移特征显著，侧向局部小范围有一定的运移指向|整体呈现出“下生上储”的喜马拉雅期调整改造式成藏模式。

关键词: 油气性质与来源, 成藏地质条件, 成藏模式, 石炭系, 川东北

Abstract:

Research on the filling characteristics and reservoir mechanism of Carboniferous oil and gas in northeast Sichuan Basin helps the understanding of the petroleum system.Based on the dynamics of petroleum accumulation,typical hydrocarbon reservoir analysis,fluid source and its flow pattern,combined with fluid inclusion and tracking hydrocarbon migration path techniques,the regularity of hydrocarbon accumulation have been analyzed through sample analysis and numerical simulation experiment.Results suggest that the organic matter from Silurian is the main source rock;the dolomite from Huanglong Formation is the favorable reservoir|the stratum-structure trap in Yinzhi-Yanshan tectonic period provides a gathering space.There are two filling-periods in 210Ma and 170Ma.The tectonic fissure and S/C-C/P unconformity constitute reticular-passage system.Vertical migration is prominent and lateral migration is minor,which shows the accumulation model of “lower-generation and upper storage” adjustment reconstruction in Xishan period.

Key words: Hydrocarbon property and source, Geological conditions, Hydrocarbon accumulation modes, Carboniferous, Northeastern Sichuan Basin

中图分类号: 

  • TE122.3

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