中国石油勘探 ›› 2006, Vol. 11 ›› Issue (3): 76-78,8.

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塔里木盆地喀什凹陷北部油砂分布特征

魏伟,杨海军,杨芝林,李剑,张志国   

  1. 中国石油青海油田分公司;中国石油塔里木油田分公司;中国石油勘探开发研究院廊坊分院;中国石油青海油田分公司 北京100083中国石油勘探开发研究院廊坊分院;河北省廊坊市065007;新疆库尔勒市841000;甘肃省敦煌市736202
  • 出版日期:2006-06-15 发布日期:2006-06-15

Distribution Characteristics of Oilsand in Northern Kashi Sag,Tarim Basin

WeiWei,Yang Haijun,Yang Zhilin,Li Jian and Zhang Zhiguo   

  • Online:2006-06-15 Published:2006-06-15

摘要: 喀什凹陷北部地表构造出露有多处油砂,分布层位主要是中新统安居安组和帕卡布拉克组,次为下白垩统克孜勒苏群。在构造的轴部及靠近轴部的两翼,断裂发育,是油砂分布的有利部位。油砂含油性与岩性关系密切,含油率较高的油砂岩性主要是细砂岩、中细砂岩。喀什凹陷北部油砂的油源来自于侏罗系烃源岩,成藏期为中新世至上新世。上新世晚期的构造运动破坏了早期形成的油藏,在喀什凹陷北部地表形成油砂。

关键词: 塔里木盆地, 喀什凹陷, 油砂, 分布特征

Abstract: Oilsand has been found in many ground structures in northern Kashi sag, which distributed mainly in Miocene Anjuan and Pakabulake Formation, secondly in Lower Cretaceous Kzlesu Formation.The axis and two limbs of anticline are favorable for oilsand distribution where have well-developed faults. The oil-bearing content of oilsand is close to rock lithology, and therefore high oil content occur mainly in fine-grained sandstone and fine-median grained sandstone. The oil source of oilsand in northern Kashi sag came from Jurassic hydrocarbon source whose reservoir-forming stage might be from Miocene to Pliocene. Early oil reservoir had been destroyed by the tectogenesis in Later Pliocene, and forming oilsand on the surface occurrence in northern Kashi sag

Key words: Tarim Basin, Kashi sag, oilsand, distribution feature

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