[1]薛永超.长期水驱后润湿性变化对残余油饱和度影响的实验研究[J].复杂油气藏,2013,(02):57.
　Xue Yongchao.The influence of wettability alteration on residual oil saturation after long-term water flooding[J].Complex Hydrocarbon Reservoirs,2013,(02):57.
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长期水驱后润湿性变化对残余油饱和度影响的实验研究
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《复杂油气藏》[ISSN:1674-4667/CN:31-2019/TQ]

卷:
期数:
2013年02期
页码:
57
栏目:
油气开发
出版日期:
2013-06-25

文章信息/Info

Title:
The influence of wettability alteration on residual oil saturation after long-term water flooding
作者:
薛永超
中国石油大学(北京)石油工程教育部重点实验室,北京 102249
Author(s):
Xue Yongchao
CMOE Key Laboratory of Petroleum Engineering in China University of Petroleum,Beijing 102200
关键词:
长期水驱 残余油饱和度 渗透率 模拟实验 效率
Keywords:
long-term water flood;  residual oil saturation;  permeability;  simulation experiment;  oil-water displacement efficiency
分类号:
TE327
文献标志码:
A
摘要:
当前普遍认为长期水驱后,储层孔隙度、渗透率、润湿性都会发生一定程度的改变,储层参数的变化对残余油饱和度会产生什么样的影响,对此研究甚少。针这一问题,选取两组平行天然岩心开展室内模拟实验。第一组岩心代表“高渗”; 第二组岩心代表“低渗”。每组岩心包括两块样品,将每组岩心A号样品连续水驱,而B号样品当含水达90%以后,停止驱替,老化岩心90 d后再继续驱替。实验结果表明,当长期水驱后,储层岩石残余油饱和度发生大幅度降低,最大降幅达50%以上。根据实验结果指出,开展油藏工程和数值模拟研究时,考虑储层岩石残余油饱和度变化,才能使模拟结果准确反映油藏实际特征。
Abstract:
It's widely believed that reservoir parameters including reservoir porosity,permeability,and wettability will change to certain extent after long-term water flood,however,there are few studies on the effect of the reservoir parameters' change on residual oil saturation.Aiming at the problem,two groups of parallel natural cores are selected to do physical simulation experiments.Cores of the first group,which are characterized by high permeability,represent the high permeability reservoir.Cores of the second group having low permeability are used to stand for the low permeability reservoir.Each group contains two core samples.Sample No.A in each group was continually driven by water,while sample No.B in each group was driven by water until the water cut reaches 90 percent,and then the sample aged for 90 days continued to be driven by water.The results show that residual oil saturation of reservoir cores decline dramatically with the maximum decreasing amplitude of above 50% after long-term flood.Hence,the variance of residual oil saturation of reservoir rocks should be taken into account in the reservoir engineering and numerical simulation study so that the simulation results can reflect correctly the practical characteristic of reservoir.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2012-04-28; 改回日期:2012-05-11
作者简介:薛永超(1975—),讲师,主要从事油气田开发教学和研究工作。电话:13521313975,E-mail:xyc75@163.com。
更新日期/Last Update: 2013-06-25