石油与天然气地质 ›› 2008, Vol. 29 ›› Issue (2): 181-188.doi: 10.11743/ogg20080205

• 论文 • 上一篇    下一篇

塔里木盆地塔中4石炭系油藏成藏过程再认识

杨楚鹏1,2, 张宝民3, 王飞宇4, 卢玉红5, 肖七林1,2, 张海祖5, 廖泽文1, 耿安松1   

  1. 1. 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;
    2. 中国科学院, 研究生院, 北京, 100039
    3. 中国石油天然气股份有限公司石油勘探开发研究院, 北京, 100083;
    4. 中国石油大学, 资源与信息学院, 北京, 102249;
    5. 中国石油天然气股份有限公司, 塔里木油田分公司, 勘探开发研究院, 新疆, 库尔勒, 841000
  • 收稿日期:2007-12-21 出版日期:2008-04-24 发布日期:2012-01-16
  • 基金项目:

    国家重点基础研究发展规划(973)项目(2006CB202303)

Reassessment of the Carboniferous oil pooling in Tz-4 field,the Tarim Baisn

Yang Chupeng1,2, Zhang Baomin3, Wang Feiyu4, Lu Yuhong5, Xiao Qilin1,2, Zhang Haizu5, Liao Zewen1, Geng Ansong1   

  1. 1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, CAS, Guangzhou 510640, China;
    2. Graduate School of CAS, Beijing 100039, China;
    3. PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China;
    4. Faculty of Resources and Information, China University of Petroleum, Beijing 102349, China;
    5. Research Institute of Petroleum Exploration & Development, PetroChina Tarim Oilfield Company, Korla, Xinjiang 841000, China
  • Received:2007-12-21 Online:2008-04-24 Published:2012-01-16

PDF (PC)

424

被引次数

26

摘要：

在塔里木盆地下古生界含油气系统中,塔中4石炭系油藏成藏过程具有代表性.对该油藏原油的分子以及碳同位素地球化学特征进行了系统解剖,结合区域地质演化特征和烃类成藏过程中储集层沥青、包裹体的记录,对其成藏过程重新进行了评价.研究揭示塔中地区存在两类烃源灶的分布,分别为中、上奥陶统烃源灶和中、下寒武统烃源灶,它们在不同地质历史时期的复合供烃造就了塔中4石炭系油藏;其中CⅠ油组属于原生性一次充注成藏,油源单一,后期几乎没有遭受任何地球化学作用的改造;CⅢ属于典型多源、多期充注、后期改造型油气藏,经历了较多的地球化学改造作用;CⅡ油藏与CⅢ油藏关系密切,部分油气为CⅢ油藏调整、改造的产物.

关键词: 成藏过程, 石炭系, 塔中4油田, 塔里木盆地

Abstract:

The oil pooling process in the Carboniferous Tz-4 field is quite typical in the Lower Paleozoic petro-leum system,Tarim basin.The molecule and carbon isotope geochemical behavior of oil in the field was analyzed systematically and the pooling process was reassessed based on regional sedimentology and tectonics as well as geochemical data of reservoir bitumen and fluid inclusions.The results indicate that two kinds of source kitchens(i.e.the Middle-Upper Ordovician and the Middle-Lower Cambrian) with different thermal evolution history in the central Tarim basin might have contributed to the formation of the Carboniferous Tz-4 oil pool.The CⅠ reservoir is thought to be formed by one hydrocarbon charging from a single oil source and suffered almost no geochemical alteration,whereas the CⅢ reservoir is characterized by diversified hydrocarbon sources,multiphase charging,and late modification.The results also suggest that the CⅡ reservoir has a close relationship with CⅢ reservoir,and is partly the product of CⅢ reservoir adjustment and modification.

Key words: pooling process, Carboniferous, Tz-4 oilfield, Tarim Basin

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