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现代地质 ›› 2005, Vol. 19 ›› Issue (Suppl): 37-41.

• 石油地质 • 上一篇    下一篇

山东济阳坳陷第三系碎屑岩储层油气成藏的孔渗门限研究

石砥石1,2,朱家俊2   

  1. 1中国科学院 广州地球化学研究所,广东 广州510640;2胜利油田有限公司 地质科学研究院,山东 东营257015
  • 收稿日期:2004-09-10 修回日期:2004-10-30 出版日期:2005-03-20 发布日期:2013-04-08
  • 作者简介:石砥石,男,高级工程师,博士研究生,1969年出生,石油地质学专业,主要从事油田勘探研究和管理工作。
  • 基金资助:

    国家“十五”科技攻关项目(2003BA613A)。

STUDY ON POROSITY AND PERMEABILITY THRESHOLD FOR HYDROCARBON  ACCUMULATION OF CLASTIC ROCKS IN TERTIARY SYSTEM, JIYANG DEPRESSION,SHANDONG

SHI Di-shi1,2,  ZHU Jia-jun2   

  1. 1Guangzhou Institution of Geochemistry,Chinese Academy of Sciences, Guangzhou,Guangdong510640,China;
    2Geological Research Institute of Shengli Oilfield Company Limited, Dongying,Shandong257015,China
  • Received:2004-09-10 Revised:2004-10-30 Online:2005-03-20 Published:2013-04-08

摘要:

在山东东营济阳坳陷第三系碎屑岩储集层中,成藏条件相同而含油性差别明显的现象广泛存在,并严重制约着该区油气藏的进一步勘探和评价。大量的实钻资料统计结果表明,碎屑岩储层的孔隙度与渗透率特性对油气成藏具有重要的影响,并在不同层位、不同构造部位表现出不同的孔渗门限。不同层位的碎屑岩储层具有不同的孔隙结构和成藏阻力,处于不同构造部位的油气具有不同的成藏动力,油气所具有的成藏动力与储层自身的孔隙度和渗透性共同决定了油气成藏的孔渗门限。孔渗门限的提出和研究较好地解释了相同成藏条件下不同砂体的含油性出现明显差异的地质现象,并对圈闭的成藏分析和评价具有重要的现实意义。

关键词: 碎屑岩储层, 成藏动力, 孔隙度, 渗透率, 门限, 济阳坳陷

Abstract:

Phenomena of same oil and gas filling conditions and obviously different oil-bearing were very common in clastic rocks of Tertiary system in Jiyang depression, which constrained seriously further exploration and evaluation of reservoirs. A vast amount of data of drilling and testing shows that porosity and permeability of clastic rock reservoir has an important effect on hydrocarbon accumulation, and there exists different porosity and permeability thresholds in different strata and different regions.The reservoir in different strata has different porosity structures and hydrocarbon accumulation resisting forces, and the oil and gas in different regions has different oil accumulation dynamic forces. Study on porosity and permeability threshold, which controlled by oil accumulation forces and reservoir porosity and permeability character, was used to interpret geologic phenomena of same hydrocarbon conditions and obviously different oil-bearing of sandstone, and was of practical importance for analysis and evaluation of petroleum accumulation.

Key words: clastic rock reservoir, hydrocarbon accumulation dynamic, porosity, permeability, threshold, Jiyang depression

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