泡沫在多孔介质中生成与破灭速度的影响因素分析

通过多孔介质中泡沫驱油的渗流数学模型,编制泡沫驱数值模拟软件。该软件可以反映泡沫渗流时涉及的生成、破灭及运移机制。以埕东油田西区泡沫驱油先导实验区为原型,分析数值模拟模型各网格泡沫生成速度、自然破灭速度和遇油破灭速度分布与影响因素的统计规律。结果表明,泡沫生成速度随平均渗透率、含气饱和度、气相中泡沫摩尔分数的增大而增大,随含油饱和度的增大而减小;泡沫自然破灭速度随平均渗透率、含气饱和度、含油饱和度和气相中泡沫摩尔分数的增大而增大;泡沫遇油破灭速度随含油饱和度、气相中泡沫摩尔分数的增大而增大。

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