波谱学杂志

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核磁共振弛豫方法测定砂岩有效渗透率

王立锦,周尚文,周达明,郭振亚,丁大同   

  1. 河北师范大学物理学院,河北石家庄 050016;南开大学物理学院,天津 030071
  • 收稿日期:2002-08-19 修回日期:2002-10-06 出版日期:2003-03-05 发布日期:2003-03-05
  • 作者简介:王立锦(1963-),男,山东青岛人,硕士,副教授,从事凝聚态物理的研究
  • 基金资助:

    河北师范大学青年基金资助项目

PERMEABILITY OF SANDSTONE MEASURED BY NMR RELAXATION METHOD

WANG Li-jin, ZHOU Shang-wen, ZHOU Da-ming, GUO Zhen-ya, DING Da-tong   

  1. Department of Physics, Hebei Normal University, Shijiazhuang 050091, China; Department of Physics, Nankai University, Tianjin 300071, China
  • Received:2002-08-19 Revised:2002-10-06 Online:2003-03-05 Published:2003-03-05
  • Supported by:

    河北师范大学青年基金资助项目

摘要:

在对储油岩芯液体吸附特性研究的基础上,提出了用核磁共振弛豫方法测定岩芯“有效渗透率”的方法,并对实际样品进行了测定分析,获得了较满意的结果. 此方法测定的有效渗透率较传统方法测定的渗透率更接近于实际的储油岩层的渗透率. 有效渗透率的值可以用来进行油藏注水开发效果分析,研究油层剩余油分布. 相信此方法将获得更广泛的应用.

关键词: 储油岩芯, 有效渗透率, 有效孔隙度, 自旋-晶格弛豫时间

Abstract:

Based on a previous study on the absorption mechanisms of liquids in oil reservoir core, a method for determining the effective permeability of sandst
one was developed in this study, and the results obtained appeared relatively satisfactory. The effective permeability of sandstone determined by this method was closer to the real value than that obtained by the conventional method. The value of effective permeability derived can be used for evaluating the performance/cost ratio of using the water flooding method in an oil field, and for studying the distribution of surplus oil in an oil field. It is believed that this method will find many practical applications.

Key words: NMR, oil storage core, effective permeability, effective porosity, spin-lattice relaxation time

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