新疆石油地质

新疆石油地质 ›› 2009, Vol. 30 ›› Issue (6): 670-673.

• 油气勘探 • 上一篇    下一篇

柴达木盆地绿参1井烃源岩中三联苯化合物的指示意义

张明峰1,2, 妥进才1, 孟仟祥1, 李中平1,2, 桑延元3   

  1. 1.中国科学院 油气资源研究重点实验室,兰州 730000;
    2.中国科学院 研究生院,北京 100039;
    3.中国石油 玉门石油管理局 勘探开发研究院,甘肃 酒泉 735016
  • 收稿日期:2009-02-27 修回日期:2009-06-23 发布日期:2020-10-23
  • 作者简介:张明峰 （1979-）,男,甘肃兰州人,在读博士研究生,地球化学, （Tel ）0931-4960921（E-mail ）zhangmingfeng_9@hotmail.com.
  • 基金资助:
    国家自然科学基金项目,青海湖及其邻近地区现代沉积中的地质微生物作用研究（40773052）资助

Indicator Significance of Terphenyl in Source Rocks of Lucan-1 Well in Qaidam Basin

ZHANG Ming-feng1,2, TUO Jin-cai1, MENG Qian-xiang1, LI Zhong-ping1,2, SANG Yan-yuan3   

  1. 1. Key Laboratory of Petroleum Resources Research, Institute of Geology and Geophysics , CAS, Lanzhou, Gansu 730000, China;
    2. Graduate School, CAS, Beijing 100039, China;
    3. Research Institute of Exploration and Development, Yumen Petroleum Administration Bureau, PetroChina, Jiuquan, Gansu 735016, China
  • Received:2009-02-27 Revised:2009-06-23 Published:2020-10-23

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摘要： 对柴达木盆地西南部乌南—绿草滩地区绿参 1 井古近-新近系微咸水-半咸水湖相烃源岩抽提物进行色谱质谱分析,从不同深度 5 个样品的芳烃馏分中均检测到三联苯（TrP）系列,分别为邻位三联苯（o-TrP）、间位三联苯（m-TrP）和对位三联苯（p-TrP）。通过分析发现,三联苯（TrP）系列中不同取代位置的同分异构体相对含量与烃源岩中有机质的热演化程度有一定关系,在低熟样品中 o-TrP 含量较高,随着成熟度的增加,m-TrP 和 p-TrP 相对含量增加,可总结出 m-TrP>p-TrP>o-TrP 的热稳定序列。用前人提出的三联苯异构体相对含量参数 ITrP 与镜质体反射率（Ro）和成熟度生物标志化合物参数 m（C29αα-20S）/m[C29αα-20（S+R）]对比,发现它们之间有很好的正相关性,也由此尝试性地总结出利用 ITrP 参数划分烃源岩成熟度的范围。

关键词: 柴达木盆地, 有机地球化学, 有机质, 热演化, 热成熟度

Abstract: The five extractive samples from different depths of source rocks of Tertiary brackish-semi brackish lacustrine deposit of Lucan-1 Well in Wunan-Lucaotan area in southwestern Qaidam basin are analyzed using chromatography-mass spectrometry (GC-MS).The terphenyl series (TrP) of aromatic hydrocarbons in it is detected, including o-TrP, m-TrP and p-TrP. The isomeric composition of the TrP is found to have some relations to the thermal maturity of its organic matter. In the low-maturity samples the abundance of o-TrP is higher; with the maturity increasing, the relative abundances of m-TrP and p-TrP are also increased. The thermally stable order is then proposed as follows: m-TrP>p-TrP>o-TrP. It is also indicated that the ITrP is positively correlated with R o and m(C29αα-20S/m[C29αα-20(S+R)]. It is concluded that the ITrP parameter can be used to classify the maturity of source rocks to some extent.

Key words: Qaidam basin, organic geochemistry, organic matter, thermal evolution, thermal maturity

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