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现代地质 ›› 2005, Vol. 19 ›› Issue (3): 425-431.

• 能源地质 • 上一篇    下一篇

控制内蒙古二连盆地达尔其油田石油富集度的关键因素--不同油源原油的混合作用

靳广兴1,2,许书堂1,2,侯读杰1,田世澄1,洪萍2   

  1. 1中国地质大学能源学院,北京100083;2中国石油化工股份有限公司中原油田分公司,河南濮阳457001
  • 收稿日期:2005-04-05 修回日期:2005-05-15 出版日期:2005-03-20 发布日期:2005-03-20
  • 作者简介:靳广兴,男,高级工程师,博士研究生,1961年出生,石油地质学专业,主要从事有机地球化学与油气勘探方面的研究工作。
  • 基金资助:

    中国石油化工股份有限公司科学技术研究项目“白音查干凹陷石油地质综合研究”(P00015)

The Mixing of Oils from Different Source Rocks:A Key Factor of Oil Enrichment of Daerqi Oilfield in Erlian Basin, Inner Mongolia

JIN Guang-xing1,2, XU Shu-tang1,2, HOU Du-jie1, TIAN Shi-cheng1, HONG Ping2   

  1. 1School of Energy Resources, China University of Geosciences, Beijing100083, China;
    2 Zhongyuan Oilfield Company, SINOPEC, Puyang, Henan457001, China
  • Received:2005-04-05 Revised:2005-05-15 Online:2005-03-20 Published:2005-03-20

摘要:

在对3套烃源岩的质量和成熟度描述基础上,通过对原油物理性质、族组成和生物标志化合物参数的研究,在达尔其油田内划分出成熟度有明显差异的低熟油和成熟油。油源对比结果认为它们分别由都红木组一段低熟烃源岩和阿尔善组二段成熟烃源岩所生。推测成熟度参数介于低熟和成熟之间的原油为混源油。通过原油混合试验和油砂连续抽提试验证实了混源油的推测。通过油藏剖面中不同性质油层的分布特征研究,结合断层发育史与油气运移关系分析认为不同油源原油的混合是控制该油田石油富集度较高的关键因素。此外,还分析了控制混源的断层组合特征。

关键词: 达尔其油田, 生物标志化合物, 混源油, 石油富集度

Abstract:

Based on physical features, gross compositions and biomarker compounds, the crude oils in Daerqi oilfield are classified into two types with distinct maturations: low mature and mature oil. Oil-source correlation shows that the oils are derived from low mature source rock of the Duhongmu Formation and mature source rock of the Aershan Formation respectively. The oil maturation index between low and mature may be the mixture of two source rocks. The inference can be proved by the artificial oil mixing test and oil-bearing sand serial extraction. By analyzing the characteristics of oil distribution and the relationship between hydrocarbon migration and fault developing history, it is concluded that the mixing of oils derived from different source rocks is a key control factor in oil enrichment.

Key words: Daerqi oilfield, biomarker compound, mixed oil from different sources, oil enrichment

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