石油与天然气地质 ›› 1996, Vol. 17 ›› Issue (4): 313-320.doi: 10.11743/ogg19960410

• 论文 • 上一篇    下一篇

吐哈盆地油气系统的类型与演化特征

李伟, 牛嘉玉, 赵文智   

  1. 石油勘探开发科学研究院地质所, 北京 100083
  • 收稿日期:1995-04-19 修回日期:1996-01-15 出版日期:1996-12-25 发布日期:2012-01-16

TYPES AND EVOLUTION CHARACTERISTICS OF PETROLEUM SYSTEMS IN TURPAN-HAMI BASIN

Li Wei, Niu Jiayu, Zhao Wenzhi   

  1. Geology Branch, Research Institute of Petroleum Exploration & Development, CNPC, Beijing
  • Received:1995-04-19 Revised:1996-01-15 Online:1996-12-25 Published:2012-01-16

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407

摘要：

吐哈盆地可划分为煤系与非煤系共存类和非煤系类两大类型及托克逊、台北、哈密,南湖4个油气系统。在煤系与非煤系共存类中,托克逊含油气系统含油圈闭主要形成于白垩纪末期,正与二叠、三叠系烃源岩的生烃高峰中侏罗世～白垩纪相匹配,在断裂伴随垂向短距离运移的条件下聚集成藏;台北油气系统的储油圈闭形成于侏罗纪中后期,中下侏罗统煤系烃源岩早白垩世生烃高峰期和二叠、三叠系烃源岩进入生气期相衔接,构成油气聚集系统;哈密油气圈闭形成于侏罗纪末,与三叠系湖相泥岩烃源岩、中晚侏罗世生烃高峰期相一致,亦可富集成藏。非煤类油气系统虽于中侏罗世及侏罗纪末有二叠、三叠系油气形成,但区域性盖层于白垩纪形成时,已错过二叠系的生烃高峰,且又经历了3次较大的破坏,故不利于油气大量聚集。

关键词: 油气系统, 类型, 演化特征, 油气藏, 形成, 分布, 吐哈盆地

Abstract:

Turpan-Hami Basin contains two types of source rocks and four petroleum systems suchas coal measure-noncoal formation combined type, noncoal formation type and Toksun,Taibei, Hami, Nanhu petroleum systems. Within the first type, oil traps that were mainlyformed in Late Cretaceous matched well with the peak period of hydrocarbon generation ofPermian-Triassic source rocks, thus forming Toksun petroleum system; the oil traps ofTaibei system were formed in Middle-Late Jurassic and matched well with the peak period ofhydrocarbon generatioll of Early-Middle Jurassic coal measures and that of Permian-Triassicsource rocks, thus forming Taibei petroleum system; Hami oil traps were formed in LateJurassic,matched with the peak period of Triassic lacustrine mudstone hydrocarbon generation, and formed Hami petroleum system.As for the noncoal formation system, since itscaprocks were formed so late and underwent three serious damages,large amounts of oil andgas were lost,it is not favourable to form large oil and gas pools.