姜瑞忠;沈泽阳;崔永正;潘红;张伟;张福蕾;

• 1:中国石油大学(华东)石油工程学院

• 2:中国石油大港油田分公司采油工艺研究院

• 3:The Pennsylvania State University

• 4:University Park

摘要(Abstract)：

钻井技术的发展使多分支水平井应用于海上凝析气藏开发。根据凝析气藏开采过程中的相变特征,将气藏划分为3个区:Ⅰ区为油气同流区,Ⅱ区为气体流动、油不流动的过渡区,Ⅲ区为纯气区。建立三区复合凝析气藏多分支水平井的解析模型,采用点源函数、Fourier有限余弦积分变换、Green函数等方法求解模型,利用MATLAB软件绘制井底压力特征曲线,分析凝析气藏多分支水平井的渗流规律,对相关参数进行敏感性分析。结果表明:凝析气藏多分支水平井的渗流过程划分为9个阶段;应力敏感效应使第二径向流阶段后的压力特征曲线逐渐上翘;分支井长度增加,分支井线性流持续时间变长;分支井间距减小,两分支井间的压力波相互干扰,导致第二径向流水平段缩短;分支井数量减少使早期的压力特征曲线向上偏移;相邻两区流度比越接近1,曲线后期上移越明显;区域半径影响径向流阶段持续时间。该模型能更准确地模拟凝析气藏多分支水平井的生产动态,为凝析气藏开发提供指导。

关键词(KeyWords)：凝析气藏;三区复合;多分支水平井;解析解;井底压力;渗流规律;敏感性分析

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;沈泽阳;崔永正;潘红;张伟;张福蕾;

Email:

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