石油与天然气地质 ›› 2004, Vol. 25 ›› Issue (5): 582-585.doi: 10.11743/ogg20040520

• 勘探开发 • 上一篇    下一篇

川西北地区须家河组二段储层中包裹体流体势研究

许浩1, 汤达祯1, 魏国齐2, 吴世祥3, 张君峰4   

  1. 1. 中国地质大学,北京 100083;
    2. 中国石油石油勘探开发研究院廊坊分,河北廊坊 065007;
    3. 石油大学盆地与油藏研究中心,北京 102249;
    4. 中国石油石油勘探开发研究院,北京 100083
  • 收稿日期:2004-08-15 出版日期:2004-10-25 发布日期:2012-01-16
  • 基金项目:

    中国石油天然气股份公司勘探前期研究项目(2002008)

A study of paleo-fluid potential from inclusions in the 2nd member of Xujiahe Formation in northwestern Sichuan

Xu Hao1, Tang Dazhen1, Wei Guoqi2, Wu Shixiang3, Zhang Junfeng4   

  1. 1. China University of Geosciences, Beijing;
    2. Langfang Branch of Petroleum Exploration and Development Research Institute, CNPC, Langfang, Hebei;
    3. Research Center of Basin and Oil Reservoir, University of Petroleum, Beijing;
    4. Petroleum Exploration and Development Research Institute, PetroChina, Beijing
  • Received:2004-08-15 Online:2004-10-25 Published:2012-01-16

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摘要：

有机包裹体的岩石学、热力学特征以及组成成分的对比分析表明,川西北地区须家河组二段储层中的包裹体可划分为4个期次,分别形成于三叠纪末到沙溪庙期、晚侏罗世中-晚期到早白垩世早期、早白垩世至喜山期前及喜山期后,代表了4次油气的充注过程。应用流体包裹体的分析资料,可获得包裹体被捕获时的古高程、密度、压力等基础数据。依照这些数据可求得古流体势,使用这一方法计算了川西北地区须家河组二段的古流体场,结果表明,燕山期区域流体场明显经历了变动-调整-再变动-再调整的历史演化过程。

关键词: 流体势, 流体包裹体, 须家河组二段, 川西北地区

Abstract:

Comparative analyses of petrology,thermodynamic characteristics and components of inclusions in the 2nd member of Xujiahe Formation in northwestern Sichuan show that the inclusions had been formed in 4 different stages,i.e.in Late Triassic to Shaximiao age,middle-late Late Jurassic to early Early Cretaceous,Early Cretaceous to pre-Himalayan, and post-Himalayan, respectively,which represent 4 hydrocarbon charging processes.Analysis of the fluid inclusions can reveal paleo-elevation-density and-pressure when the inclusions were entrapped.These data can be used to calculate the fossil fluid potential.This method has been used to calculate the fossil fluid field of the 2 ndmember of Xujiahe Formation in northwestern Sichuan.The results show that regional fluid field obviously has gone through an evolution process of variation adjustment revariation-readjustment.

Key words: fluid potential, fluid inclusion, 2nd member of Xujiahe Formation, northwestern Sichuan

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