姜瑞忠;黄磊;崔永正;范海军;刘亚楠;王小果;佟颖;

• 1:中国石油大学(华东)石油工程学院

• 2:中国石油天然气股份有限公司北京油气调控中心

• 3:中国石油化工股份有限公司石油工程研究院

摘要(Abstract)：

裂缝性油藏的非均质性和天然裂缝的应力敏感效应影响裂缝性复合油藏开发效果。考虑平面非均质性和裂缝应力敏感效应,建立水平井非线性渗流数学模型;运用有限Fourier余弦变换、摄动原理、Laplace变换、Duhamel原理及点源叠加等方法求解模型,得到拉式空间线源解。采用Stehfest数值反演方法,编程绘制典型试井曲线,划分9个流动阶段。分析渗透率模量、裂缝储容系数、窜流系数、内区半径、水平井垂向位置和内外区流度比对压力及压力导数曲线的影响。结果表明:渗透率模量导致压力和压力导数曲线上翘;裂缝储容系数决定窜流的强度;窜流系数影响窜流出现时间;内外区流度比越大,内区向外区的过渡阶段持续越久;水平井垂向位置和内区半径分别影响早期径向流和中期径向流的持续时间。该结果为裂缝性油藏的有效开发提供指导。

关键词(KeyWords)：裂缝;复合油藏;水平井;应力敏感;线源解;压力动态分析

Abstract:

Keywords:

基金项目(Foundation):国家科技重大专项(2016ZX05027-004-004);; 国家自然科学基金项目(51574265)

作者(Author):姜瑞忠;黄磊;崔永正;范海军;刘亚楠;王小果;佟颖;

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