石油与天然气地质 ›› 2001, Vol. 22 ›› Issue (2): 150-153.doi: 10.11743/ogg20010214

• 油气空间 • 上一篇    下一篇

塔中北斜坡西部原油类型及主力油源层

林青1, 林壬子1, 王培荣2, 朱扬明2   

  1. 1. 石油大学, 北京昌平102200;
    2. 江汉石油学院, 湖北荆州434102
  • 收稿日期:2000-07-12 出版日期:2001-06-25 发布日期:2012-01-16

CRUDE TYPES AND MAIN SOURCE ROCKS IN WEST PART OF NORTH SLOPE, CENTRAL TARIM

Lin Qing1, Lin Renzi1, Wang Peirong2, Zhu Yangniing2   

  1. 1. Petroleum University, Beijing;
    2. Jianghan Petroleum Institute Jingzhou, Hubei
  • Received:2000-07-12 Online:2001-06-25 Published:2012-01-16

PDF (PC)

613

被引次数

65

摘要：

塔中北斜坡西部原油分为两类:Ⅰ类原油以相对低的三环萜烷/藿烷、孕凿烷/规则甾烷、重排甾烷/规则甾烷比值和高的Ts/Tm,C30/C31藿烷,C28/C29规则笛烷为特征;Ⅱ类原油与Ⅰ类原油的生物标志物特征相反.这表明北斜坡西部至少存在两个油源.油、源岩对比结果表明,Ⅰ类原油主要来源于寒武系烃源岩,Ⅱ类原油来源于中上奥陶统泥灰岩.

关键词: 寒武系, 中上奥陶统, 生物标志物, 油源对比, 塔中北斜坡

Abstract:

The oil in the west part of northern slope in Central Tarim Basin can be classified into two types (Ⅰ,Ⅱ) based on the distribution and composition of sterane and terpane. Type-I oil is characterized by relative tow ratio of tricyclic terpanes to hopanes, pregnanes to regular sterane and rearranged steranes to regular sterane, and by relative high ratio of Ts to Tm, C28 to C29 sterane and C30 hopane to C31 homohopanes. Type-Ⅱ oil has opposite biomarker characters to the type-I oil. The difference implies that there may be at least two oil sources in the study area The correlation between the oils and source rocks indicates that the oil of type-Ⅰ was derived from the Cambrian carbonate source rock,and the oil of type-Ⅱ was derived from the Middle-Upper Ordovician marl source rock.

Key words: Cambrian, Middle-Upper Ordovician, biomarker, oil-source correlation, north slope, Central Tarim

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