新疆石油地质 ›› 2009, Vol. 30 ›› Issue (2): 269-271.

• 应用技术 • 上一篇    下一篇

应用 CT 成像技术研究岩心水驱含油饱和度分布特征

高建, 韩冬, 王家禄, 吴康云, 刘莉   

  1. 中国石油 勘探开发研究院 石油采收率所,北京 100083
  • 收稿日期:2008-10-08 修回日期:2008-12-03 出版日期:2009-04-01 发布日期:2020-08-25
  • 作者简介:高 建(1974-),男,辽宁锦州人,博士,油层物理, (Tel)010-62093020(E-mail)gaojianeor@petrochina.com.cn.
  • 基金资助:
    中国石油科技管理部项目,CT 在开发实验中的应用(2008B-0903)资助

Application of CT Scanning Image Technique to Study of Oil Saturation Distribution in Core Displacement Test

GAO Jian, HAN Dong, WANG Jia-lu, WU Kang-yun, LIU Li   

  1. Department of EOR, Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
  • Received:2008-10-08 Revised:2008-12-03 Online:2009-04-01 Published:2020-08-25

摘要: 应用 CT 扫描成像技术,建立含油饱和度分布计算方法,通过对干岩心、饱和地层水岩心和水驱油不同状态岩心扫描,得到岩心不同扫描断面、沿某正交切面、三维含油饱和度分布,实现岩心水驱油过程中含油饱和度分布可视化和定量表征。采用标准偏差和变异系数对岩心含油饱和度分布的非均质程度进行评价。应用 CT 成像技术计算岩心原始含油饱和度和残余油饱和度值与驱替法得到的实测含油饱和度值误差均小于 3%,表明 CT 法研究水驱过程中含油饱和度分布具有较高的精度,为描述水驱油过程中含油饱和度分布及变化特征提供了方法。

关键词: CT 成像, 岩心, 驱替实验, 含油饱和度, 分布

Abstract: With CT technique, oil saturation distribution can be measured. Original oil saturation and residual oil saturation of different sections and orthogonal intersections as well as 3-D oil saturation can be determined by core scanning in three states which are dry, saturated with formation water and oil displaced by water, thus realizing the visualization and quantitative characterization of oil saturation distribution in core water flooding experiment. The heterogeneity of core oil saturation distribution can be evaluated with standard deviation and variation coefficient. The difference between the CT value and real oil saturation is less than 3%, indicating that the result of CT technique is more accurate than those of other methods for description of the distribution and variation of oil saturation in core displacement test.

Key words: CT scanning image, core, displacement test, oil saturation, distribution

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