| 摘要: |
| 根据烃源宕地球化学特征,结合有机岩石学、沉积学特征，对南傣凹陷-占近系烃源岩有机相进行了综合研究。 结果表明，南堡凹陷古近系分布有藻源相、含植源藻源相、含藻源植源相和植源相等不M类甩的有机相，有机相类型 对烃源岩的牛烃条件与有效烃源岩的分布特征具有显著的控制作用:半深湖-_藻源相和半深湖-浅湖含植源藻 源相富含生烃组分,是南堡凹陷最有利于生烃的有机相;浅湖一三角洲含藻源植源相是在弱氧化一还原环境下形成 的陆源高等植物和水生生物的浞源相；以陆源高等植物为母质的植源相是生烃能力差的有机相带。 |
| 关键词: 布机相 烃源畀 近系 南堡凹陷 渤海湾盆地 |
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| Characteristics of organic facies of Eogene hydrocarbon source rocks in Nanpu sag，Bohai Bay Basin |
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ZHAO Yan-de1,HU Luo-fu1,WANG Xu-dong2,AI Tian-jie3,ZHANG Zhi-huan1,MEI Ling1,U Yan1
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(1. School of Resource and Information Technology in China University of Petroleum, Beijing 102249’China;2. Exploration and Development Research Institute of Jidong Oilfield Company，PetroChina, Tangshan 063004，China ;3. School of Resource and Safety Engineering in China University of Mining & Technology, Beijing 100083, China)
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| Abstract: |
| Combined with organic petrology and sedimentology characteristics, the organic facies of the source rocks were comprehensively studied according to the geochemistry characteristics. The results show that the zones of the most important source rocks are distributed in the algal，floral-algal，algal-floral and floral facies. The development and distribution of source rocks are controlled by different types of organic facies. The excellent source rocks in the Nanpu sag were developed in the algal organic facies of deep iake-semideep lake and the floral-algal organic facies of semideep lake-shallow lake. The organic matters, which were deposited in a weakly oxidative and reducing environments, were developed in the organic facies of algal-floral organic inputs of the shallow lake and delta. This type of organic facies is chaotic facies of higher plant and aquatic organism, it is also good at generating the hydrocarbons. rIlie relatively poor source rocks were deposited in the floral organic facies, which parent material was higher plant of land sources. |
| Key words: organic facies source rocks Eogene Nanpu sag Bohai Bay Basin |
