新疆石油地质 ›› 2003, Vol. 24 ›› Issue (4): 302-305.

• 油气勘探 • 上一篇    下一篇

马朗凹陷芦草沟组烃源岩地化特征

杜宏宇, 王鸿雁, 徐宗谦   

  1. 中国石油吐哈油田分公司勘探开发研究院,新疆 哈密 839009
  • 收稿日期:2002-08-28 修回日期:2002-12-30 发布日期:2021-01-13
  • 作者简介:杜宏宇(1971-), 男,四川达县人,工程师,油气地球化学。联系电话:0902-2765340

Geochemical Characteristics of Lucaogou Source Rock in Malang Sag, Santanghu Basin

DU Hong-yu, WANG Hong-yan, XU Zong-qian   

  1. Research Institute of Exploration and Development, Turpan-Hami Oilfield Company, PetroChina, Hami, Xinjiang 839009, China
  • Received:2002-08-28 Revised:2002-12-30 Published:2021-01-13

摘要: 对三塘湖盆地马朗凹陷芦草沟组烃源岩的研究表明:烃源岩中原生成因的矿物沥青基质优势分布,其中有机质可能主要来源于菌藻类物质生物降解;可溶有机质生物标志物组成表现出烃源岩有机质具有陆源高等植物与微生物(菌藻类)混合生源构成的基本特征,富氢组分含量丰富;烃源岩样品的宏观热解特征反映出烃源岩有机质大量成烃的门限温度较高、主生烃峰带窄的特性,类似Ⅰ型干酪根成烃规律;此外该套烃源岩有机质中还含有相当数量的原生类脂物,具有一定低熟生烃能力。

关键词: 三塘湖盆地, 烃源岩, 沥青, 生物标志物, 热解, 地球化学特征

Abstract: A study of Lucaogou source rock in Malang sag,Santanghu basin is made. The result shows that 1) primary origin of asphaltene as-sumes predominant distribution in which organic matter could mainly come from bio-degradation of thallophyte; 2) the biomarker composition in soluble organic matter appears to be of general feature of mixed sources from both terrigenous higher plant and microorganism (thallo-phyte),with abundant hydrogen composition; 3) the sample of source rock reflects the characters of macroscopic pyrolysis with higher oil threshold temperature and narrower major hydrocarbon generation zone, similar to the hydrocarbon generation pattern of Type I kerogen. In addition,this source rock organic matter contains considerable amount of primary lipids,with a certain of low maturation hydrocarbon-gener-ated potentials.

Key words: Santanghu basin, source rock, asphalt, biomarker, pyrolysis, geochemistry

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