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现代地质 ›› 2011, Vol. 25 ›› Issue (3): 594-598.

• 能源地质学 • 上一篇    下一篇

海拉尔盆地贝尔凹陷油气成藏期次分析

秦文龙1,2,3,崔军平1,2   

  1. 1西北大学 地质学系,陕西 西安710069;2西北大学 大陆动力学国家重点实验室,陕西 西安710069;
    3. 西安石油大学 陕西省油气田特种增产技术重点实验室,陕西 西安710065
  • 出版日期:2011-06-22 发布日期:2011-06-23
  • 作者简介:秦文龙,男,讲师,博士研究生,1978年出生,地球探测与信息技术专业,主要从事石油地质与油气成藏方面的研究与教学工作。 Email:q971275@163.com。
  • 基金资助:

    陕西省教育厅科研计划项目(2010JK784);国家自然科学青年基金项目(41002040)

5Research on the Formation Stages of Oilgas Reservoirs in Beier Depression of Hailaer Basin

 QIN  Wen-Long-1, 2 , 3 , CUI  Jun-Beng-1, 2    

  • Online:2011-06-22 Published:2011-06-23

摘要:

应用储层自生伊利石测年法、烃源岩生排烃史法和包裹体均一温度法等综合分析海拉尔盆地贝尔凹陷油气成藏期次。分析结果表明海拉尔盆地贝尔凹陷油气成藏期主要分为两个大阶段:第一阶段油气成藏时期在距今120~80 Ma,相当于伊敏组沉积时期—青元岗组沉积早期,是海拉尔盆地贝尔凹陷最主要的成藏时期,油气大规模注入储层时期应该在105~90 Ma,相当于伊敏组二、三段沉积时期,此时期为烃源岩大量生排烃时期,油气运移动力充足,有利于油气发生大规模的运移并聚集成藏;第二阶段为青元岗组沉积至今,青元岗组沉积以来,发生过近东西向的挤压反转,使已形成的油气藏重新调整,同时二次生成的油气继续注入成藏。

关键词: 海拉尔盆地, 贝尔凹陷, 伊利石测年, 流体包裹体, 油气成藏期次

Abstract:

On the basis of illite dating method, hydrocarbon generated and hydrocarbon expulsed process and  homogenization temperatures of fluid inclusion, formation stages of oilgas reservoirs in Beier depression of Hailaer basin are studied. It shows that there are two main formation stages of oilgas reservoirs in Beier depression of Hailaer basin. The first stage is about 120-80 Ma, which is corresponding to sedimentary period of Yimin Formationearly sedimentary period of Qingyuangang Formation, which is the main formation time of oilgas reservoirs in Beier depression of Hailaer basin. The great majority of formation period of oil and gas is 105-90 Ma, which is corresponding to secondthird segment sedimentary period of Yimin Formation. It is the abundant period of hydrocarbon generated and expulsed process, and sufficient migration force is helpful to formation of oil and gas reservoirs. The second stage is from Qinyuangang Formation to now which is second formation process of oilgas reservoirs. The oilgas reservoirs formed in the first stage is adjusted in the second stage.

Key words: Hailaer basin, Beier depression, dating of illite, fluid inclusion, formation stage of oilgas reservoir