王军磊;周明旺;罗二辉;韩海水;

• 1:中国石油勘探开发研究院

• 2:辽河油田分公司勘探开发研究院

摘要(Abstract)：

为表征剩余油的分布规律,以及井网后期加密调整提供理论参考,利用叠加原理,求解考虑启动压力梯度的七点井网稳态压力方程,用压力公式推导流函数模拟井网单元间的流线分布.结果表明:考虑启动压力梯度时井网单元内存在流体流动区和不动区,定义为流动面积与井网单元面积比值的有效动用因数随储层参数变化而变化,启动压力梯度越大,有效动用程度越低,增加储层有效渗透率(如酸化、压裂)、增大注采压差和缩小注采井距能提高有效动用因数;储层物性较差时,缩小井距是提高有效动用因数的有效方式,储层物性较好时增大生产压差效果更好.

关键词(KeyWords)：低渗透油藏;启动压力梯度;七点井网;流线;有效动用因数

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2011ZX05015;2009ZX05009)

作者(Author):王军磊;周明旺;罗二辉;韩海水;

Email:

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