油藏岩石润湿性对气驱剩余油微观分布的影响机制

doi:10.7623/syxb201003021

石油学报 ›› 2010, Vol. 31 ›› Issue (3): 467-470.DOI: 10.7623/syxb201003021

油藏岩石润湿性对气驱剩余油微观分布的影响机制

杨永飞 1 姚军 1 M.I.J.van Dijke 2

1中国石油大学石油工程学院山东青岛 266555； 2英国赫瑞-瓦特大学石油工程研究所苏格兰 EH14 4AS

收稿日期:2009-08-10 修回日期:2009-11-27 出版日期:2010-05-25 发布日期:2010-07-28
通讯作者: 杨永飞
作者简介:杨永飞，男，1982年6月生，2007年毕业于中国石油大学（华东），现为该校在读博士研究生，主要从事多孔介质中油气水三相渗流模拟相关研究工作。
基金资助:
国家重点基础研究发展规划（973）项目(2006CB202404)、国家留学基金委和中国石油大学（华东）研究生创新基金（B2009-01）联合资助。

Effect of reservoir rock wettability on microcosmic distribution of residual oil after gas displacement

YANG Yongfei 1 YAO Jun 1 M.I.J. van Dijke

Received:2009-08-10 Revised:2009-11-27 Online:2010-05-25 Published:2010-07-28

摘要/Abstract

摘要：

注气驱是目前油田进一步提高原油采收率的重要措施之一，油藏岩石润湿性对注气的效果有重要影响。基于三维孔隙级网络模型，运用孔隙级流动模拟方法，系统研究了6种不同润湿性油藏注气过程的油气水孔隙级分布和气驱效果。结果表明，水湿和MWS混合润湿(小孔隙为油湿)体系中的注气效果相对于另外4种润湿体系较差；这4种效果较好的润湿体系分别是油湿、中性润湿、MWL混合润湿(大孔隙为油湿)和部分润湿（其中30%孔隙水湿）体系。

关键词: 气驱油藏, 岩石润湿性, 剩余油分布, 三维孔隙网络模型, 注气效率

Abstract:

Gas injection is one of the most important methods to enhance oil recovery. The rock wettability of reservoir has a great effect on gas displacement efficiency. Based on a three-dimensional pore-scale network model, the distribution and displacement efficiencies of gas injection in six reservoirs with different wettability were investigated using the pore-scale flow modeling method. The results show that gas injection efficiency in water-wet and mixed-wet small (small pores are oil-wet) reservoirs is poorer than that in oil-wet, intermediate-wet, mixed-wet large (large pores are oil-wet) and fractionally-wet (30% of pores is water-wet) systems.

Key words: gas-driven reservoir, rock wettability, residual oil distribution, three-dimensional pore network model, gas injection efficiency

杨永飞姚军 M.I.J.van Dijke. 油藏岩石润湿性对气驱剩余油微观分布的影响机制[J]. 石油学报, 2010, 31(3): 467-470.

YANG Yongfei YAO Jun M.I.J. van Dijke. Effect of reservoir rock wettability on microcosmic distribution of residual oil after gas displacement[J]. Editorial office of ACTA PETROLEI SINICA, 2010, 31(3): 467-470.

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油藏岩石润湿性对气驱剩余油微观分布的影响机制

Effect of reservoir rock wettability on microcosmic distribution of residual oil after gas displacement

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