低渗油藏五点井网产水规律研究

发布时间：2018-04-25 07:17

本文选题：低渗油藏 + 非达西渗流　；参考：《油气藏评价与开发》2016年06期

【摘要】：低渗透油藏普遍存在非达西渗流特征,表现为渗流速度与压力梯度关系曲线不为直线且不过原点,即存在启动压力梯度。为了解决基于达西定律的常规产水规律理论在低渗透油藏中难以适用的问题,在考虑了非达西渗流规律的基础上,结合油水两相流管法理论,推导出适用于低渗透油藏的产水规律计算方法,并通过MATLAB软件编程计算出油藏五点井网下的含水上升变化规律。MATLAB软件的计算结果清楚展示了不同注采压差、注采井距下的产水规律,由此可确定出适合油藏的注采压差、注采井距参数,对实际油藏开发有一定的指导意义。
[Abstract]:Non-Darcy percolation is common in low permeability reservoirs, which shows that the relationship between percolation velocity and pressure gradient is not straight and only the origin, that is, there is a starting pressure gradient. In order to solve the problem that the conventional water production law based on Darcy's law is difficult to be applied in low permeability reservoirs, the non-Darcy percolation law is considered, and the oil-water two-phase flow tube method is combined with the theory of oil-water two-phase flow tube method. This paper deduces the calculation method of water production law suitable for low permeability reservoir, and calculates the law of water cut rise and variation under five-spot well network by MATLAB software. The calculation results of MATLAB software clearly show the difference of injection and production pressure. The rule of water production under injection-production well spacing can be used to determine the pressure-injection pressure difference and injection-production distance parameters suitable for reservoir, which is of certain guiding significance to actual reservoir development.
【作者单位】：西南石油大学石油与天然气工程学院;
【分类号】：TE348

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