石油学报 ›› 1998, Vol. 19 ›› Issue (3): 21-25.DOI: 10.7623/syxb199803005

• 地质勘探 • 上一篇    下一篇

吐哈盆地煤油源岩形成条件与生油评价

赵长毅1, 赵文智1, 程克明1, 杜美利2, 邵龙义2   

  1. 1. 石油勘探开发科学研究院;
    2. 中国矿业大学研究生部
  • 收稿日期:1997-08-05 出版日期:1998-07-25 发布日期:2013-07-08
  • 作者简介:赵长毅,1991年于中国矿业大学研究部博士毕业.现在石油勘探开发科学研究院地质所工作.通讯处:北京市学院路910信箱邮政编码:100083.

THE FORMATION CONDITION OF COAL ACTED AS OIL SOURCE ROCK AND ASSESSMENT OF OIL GENERATED POTENTIAL IN TURPAN HAMI BASIN

Zhao Changyi1   

  1. Scientific Research Institute of Petroleum Exploration and Development, Beijing
  • Received:1997-08-05 Online:1998-07-25 Published:2013-07-08

摘要: 系统剖析了不同成煤环境下煤的成油潜力.对吐哈盆地煤层划分出四种煤相类型:干燥森林沼泽相、潮湿森林沼泽相、流水沼泽相及开阔水体沼泽相.不同煤相煤的生烃潜力存在差异,干燥森林沼泽相形成的煤,其惰质组含量高,为氧化环境下形成的产物,生烃潜力<120mg/g,基本为非生油岩;潮湿森林沼泽相形成的煤,其沼泽水介质可以从弱氧化到弱还原环境,成油性范围较宽,从差生油煤到中等生油煤均存在;流水沼泽相形成的煤,沼泽水介质从弱还原到还原环境,基本具中等生油能力;而开阔水体沼泽相主要形成于还原环境,富含壳质组分,应属于好生油煤.流水沼泽相是煤成油源岩发育的最有利相带,三角洲分流间湾沼泽应是煤成烃勘探最有利的场所.以生烃潜力为基准,提出煤作为油源岩的评价标准.

关键词: 吐哈盆地, 煤成油, 聚煤环境, 煤系, 生油岩评价

Abstract: The Turpan Hami Basin is a typical example of oil derived from coal.Four types of coal facies are distinguished,dry forest swamp,moist forest swamp,running water swamp and open water swamp,based on coal formed environments and genesis of macerals.The oil generation potentials were analyzed for different coal formed environments.It is pointed out that delta interdistributary swamp is favorable for coaly oil source rock,running water swamp is a benefit location to hydrocarbon derived from coal combining the development degree of coalbed.Assessment standard of coal acted as oil source rock is proposed.

Key words: Turpan Hami Basin, coal-formed oil, coal-formed environment, coal measures, source rock evaluation