石油与天然气地质 ›› 2004, Vol. 25 ›› Issue (6): 707-712.doi: 10.11743/ogg20040621

• 勘探开发 • 上一篇    

柴达木盆地北缘油气成藏特点

高先志1,2, 马达德3, 刘震1,2, 汪立群3   

  1. 1. 石油大学石油天然气成藏机理教育部重点实验室,北京 102249;
    2. 石油大学资源与信息学院,北京 102249;
    3. 中国石油青海油田分公司,甘肃敦煌 736200
  • 收稿日期:2004-11-01 出版日期:2004-12-25 发布日期:2012-01-16
  • 基金项目:

    石油天然气总公司"九五"油气勘探科技工程项目(970208-05-04)

Characteristics of hydrocarbon accumulation in the northern edge of Qaidam basin

Gao Xianzhi1,2, Ma Dade3, Liu Zhen1,2, Wang Liquan 3   

  1. 1. Key Laboratory for Hydrocarbon Accumulation, University of Petroleum, Ministry of Education, Beijing;
    2. College of Resources and Information, University of Petroleum, Beijing;
    3. Qinghai Oilfield Company, PetroChina, Dunhuang, Gansu
  • Received:2004-11-01 Online:2004-12-25 Published:2012-01-16

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摘要：

运用包裹体均一化温度、包裹体成分以及圈闭演化历史分析等研究方法,对柴北缘典型油气田油气成藏特征进行了分析。结果表明:侏罗系油气藏具有三个油气成藏期,分别为侏罗纪末、渐新世和上新世;下第三系油气藏具有两个成藏期,分别发生在渐新世和上新世,其中渐新世为主要成藏期;上第三系油气藏属于次生油气藏,它们主要是由于上新世以后因构造变动导致下第三系油气藏调整和破坏,油气发生向上再运移而聚集形成的。柴北缘油气藏形成演化过程中,断层始终扮演了重要的角色。

关键词: 油气藏, 包裹体, 成藏史, 柴达木盆地

Abstract:

Characteristics of hydrocarbon accumulation in typical oil and gas fields in the northern edge of Qaidam basin are analyzed by using homogenization temperature and compositions of inclusions and trap evolution history. Oil and gas in Jurassic reservoirs have been accumulated in 3 different stages, including the end of Jurassic, Oligocene and Pliocene; while that in the lower Tertiary reservoirs have been accumulated in 2 stages, i.e. Oligocene and Pliocene; and that in the upper Tertiary reservoirs are of secondary oil/gas reservoirs, accumulated through upward remigration of hydrocarbons from the adjustment and damage of the lower Tertiary reservoirs, due to post Pliocene tectonic movements. Faults have played a key role all the time during the formation and evolution of oil and gas reservoirs in the northern edge of Qaidam basin.

Key words: oil and gas reservoir, inclusion, hydrocarbon accumulation history, Qaidam basin

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