石油与天然气地质 ›› 2012, Vol. 33 ›› Issue (6): 836-844.doi: 10.11743/ogg20120603

• 油气地质 • 上一篇    下一篇

广西崇左柳桥地区上二叠统礁灰岩中沥青的地球化学特征

邱振1,2, 王清晨2, 贾望鲁3, 韦恒叶4, 彭平安3   

  1. 1. 中国石油 勘探开发研究院,北京 100083;
    2. 中国科学院 地质与地球物理研究所 岩石圈演化国家 重点实验室,北京100029;
    3. 中国科学院 广州地球化学研究所 有机地球化学国家重点实验室, 广东 广州 510640;
    4. 东华理工大学 地球科学学院,江西 南昌 330013
  • 收稿日期:2011-10-25 修回日期:2012-10-17 出版日期:2012-12-28 发布日期:2013-01-10
  • 第一作者简介:邱振(1984—),男,博士后,石油地质学及油气资源评价。
  • 基金项目:

    国家科技重大专项(2011ZX05008,2011ZX05001)。

Geochemical characteristics of bitumen in the Upper Permian reef limestone in Liuqiao(Chongzuo)area,Guangxi province

Qiu Zhen1,2, Wang Qingchen2, Jia Wanglu3, Wei Hengye4, Peng Pingan3   

  1. 1. PetroChina Research Institute of Petroleum Exploration and Development, Beijing 100083, China;
    2. State Key Laboratory of Lithospheric Evolution, Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China;
    3. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640, China;
    4. College of Earth Science, East China Institute of Technology, Nanchang, Jiangxi 330013, China
  • Received:2011-10-25 Revised:2012-10-17 Online:2012-12-28 Published:2013-01-10

摘要:

广西崇左柳桥地区上二叠统生物礁灰岩中普遍发育沥青,沥青主要充填于生物礁内的溶蚀孔洞和裂隙中,其次在生物体腔内。研究区内上二叠统沥青的成熟度较高,H/C原子比一般小于0.1。对崇左柳桥地区上二叠统生物礁灰岩中的沥青和大隆组的硅质岩、硅质泥岩等进行饱和烃色谱-质谱分析,综合对比其所含直链烷烃、萜烷、藿烷、甾烷和生物标志物。结果表明,这些上二叠统沥青源自大隆组的可能性不大,但可能来源于泥盆系烃源岩。

关键词: 地球化学, 沥青, 上二叠统, 生物礁灰岩, 大隆组, 柳桥地区, 广西

Abstract:

Bitumen are well developed in the Upper Permian reef limestone in Liuqiao area,Chongzuo,Guangxi province,and they mainly occur in the cavities and fractures of bioherms,followed by biological coelomata.The bitumen samples show a high maturity and an atomic ratio of H/C generally less than 0.1.Based on the gas chromatography-mass spectrometry analyses of saturated hydrocarbon extracted from the bitumen in the Upper Permian as well as from the silicite and and siliceous mudstones in the Dalong Formation in the Liuqiao(Chongzuo)area,we correlated their n-alkane,terpane,hopane,sterane and biomarkers.The result shows that the possibility of the bitumen being sourced from the Dalong Formation of the Upper Permian is slime.Instead,it could come from the source rocks of the Devonian in the study area.

Key words: geochemistry, bitumen, Upper Permian, reef limestone, Dalong Formation, Liuqiao, Guangxi

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