天然气地球科学 ›› 2011, Vol. 22 ›› Issue (2): 307–314.doi: 10.11764/j.issn.1672-1926.2011.02.307

• 天然气地质学 • 上一篇    下一篇

三江盆地绥滨坳陷中生界生烃潜力

朱春俊, 王延斌   

  1. 中国矿业大学(北京)煤炭资源与安全开采国家重点实验室,北京 100083
  • 收稿日期:2010-05-10 修回日期:2010-07-05 出版日期:2011-04-10 发布日期:2011-04-10
  • 通讯作者: 朱春俊zcj@cumtb.edu.cn E-mail:zcj@cumtb.edu.cn
  • 作者简介:朱春俊(1977-),男,山西洪洞人,工程师,博士,主要从事煤炭、油气资源评价相关研究.
  • 基金资助:

    国家自然科学基金项目(编号: 49972054)资助.

Hydrocarbon-generating Potential in Mesozoic Suibin Depression of Sanjiang Basin

ZHU Chun-Jun, WANG Yan-Bin   

  1. State Key Laboratory of Cocl Resources and Safe Mining in China University of Miningand Technology(Beijing) , Beijing 100083,China
  • Received:2010-05-10 Revised:2010-07-05 Online:2011-04-10 Published:2011-04-10

摘要:

利用三江盆地绥滨坳陷现有钻井的有机碳和热解数据, 从有机地球化学方面对坳陷中生界主力煤系烃源岩的生烃特征及潜力进行了研究。结果表明: 研究区有机显微组分以惰质组为主,但壳质组和腐泥组中存在较多富氢组分的孢子体、壳屑体和矿物沥青基质。有机质类型以Ⅲ型为主,其次为II型。其中城子河组和穆棱组有机质类型相对较好,为2套具生烃潜力的煤系烃源岩。烃源岩有机质成熟度较高,RO值变化范围主要集中在0.5%~1.0%之间,绝大部分都已进入生油阶段,且部分烃源岩已进入高成熟—过成熟阶段,转为以生气为主。

关键词: 绥滨坳陷, 煤系烃源岩, 有机地球化学, 生烃潜力

Abstract:

Using existing well drilling data of organic carbon and thermal decomposition in Suibin depression of Sanjiang basin, from the organic geochemistry aspect we conducted the research of hydrocarbon characteristic and hydrocarbon\|generating potential of main coal\|bearing source rock from Mesozoic of the depression. The results indicated that in research area vitrinite is the main organic maceral while abundant sporinite, exitinite and fluorescence, which have rich hydrogen components, in liptinite and saprope. The organic matters mostly are of III type and someⅡtype. The organic matter type of the Chenghezi group and the Muling group are relatively better, with two sets of source rocks having better hydrocarbon potential. The organic matter maturity of the hydrocarbon source rocks is high and the vitrinite reflectance varies from 0.5% to 1.0%, which means the major part of the hydrocarbon source rocks have entered the oil generation stage, and the partial hydrocarbon source rocks have been high mature-over mature and entered the gas generation stage.

Key words: Suibin depression, Coal-bearing source rocks, Organic geochemistry, Hydrocarbon-generating potential

中图分类号: 

  • TE122.1

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