石油与天然气地质 ›› 1997, Vol. 18 ›› Issue (2): 136-139.doi: 10.11743/ogg19970209

• 论文 • 上一篇    下一篇

天然气同位素特征及作用

黄海平, 许晓宏   

  1. 中国地质大学, 北京 100083
  • 收稿日期:1996-12-09 修回日期:1997-02-25 出版日期:1997-06-25 发布日期:2012-01-18

ISOTOPIC PROPERTIES OF NATURAL GAS AND ITS EFFECT

Huang Haiping, Xu Xiaohong   

  1. China University of Geosciences, Beijing
  • Received:1996-12-09 Revised:1997-02-25 Online:1997-06-25 Published:2012-01-18

PDF (PC)

1049

被引次数

28

摘要：

利用天然气同位素组成在油气扩散和对流中的差异、碳氢同位素组成与原来所作断块图的对比、天然气在储层内混合的同位素组成平衡原理和天然气成因与同位素变化之间的制约关系等特征,能有效地判识砂体连通性划分储集流体单元;可确定油气水界面和压力系统,使断块划分更加准确,进一步完善断块图,进行油藏精细描述;能确定不同源岩层所作的贡献,进而对混层开采进行配产,并能为下伏油藏的存在提供快速的判识。

关键词: 天然气, 储层地球化学, 同位素指纹, 流体单元, 配产, 油藏预测

Abstract:

The variation of isotopic properties of gas within a continuous reservoir is generally small but can be significant between fault blocks of one reservoir or between unconnected but closely stacked reservoirs.Thus isotopic analysis of gas could be used to identify the continuity of reservoir,define faults and derive more accurately reservoir description.The isotopic analyses in commingled production could be used to allocate contributions of individual sands and distinguish underlying oil reservoirs.