洪凯;汪志明;王小秋;李江涛;张思勤;曾泉树;

• 1:中国石油大学(北京)石油工程学院

摘要(Abstract)：

在页岩气藏地质特征研究的基础上,针对页岩气的吸附解吸、滑脱、扩散及渗流等复杂流动过程,建立水力压裂条件下,页岩储层水平井单相气渗流数学模型,从而全方面描述页岩气渗流机理.采用Laplace变换、Stehfest反演和Matlab编程对模型进行求解,绘制页岩气储层压裂水平井产能递减曲线,并分析滑脱效应、吸附解吸、储容比、窜流因子、气藏尺寸对产能的影响.结果表明:滑脱效应、吸附解吸、窜流因子和气藏尺寸主要影响生产过渡期和中期,储容比主要影响生产初期和过渡期;滑脱效应和吸附解吸使得过渡期和中期的产量更高,不同的是滑脱效应使生产时间缩短,吸附解吸延长生产时间,并且有利于稳产;窜流因子和气藏尺寸越大,过渡期和中期的产量越高;储容比越小,初期和过渡期的产量越低.

关键词(KeyWords)：页岩气储层;压裂水平井;吸附解吸;滑脱效应;产能模型

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金创新研究群体项目(51221003)

作者(Author):洪凯;汪志明;王小秋;李江涛;张思勤;曾泉树;

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