线性平-直联合开发井网水平井产液变化规律研究

Investigation on the Rule of Fluid Production Change of Linear Horizontal-Vertical Well Pattern

目前水平井技术已经成为油气田开发的关键技术之一,随着油气田开发的进一步深入,开展水平井开发相关研究具有重要意义。基于点源函数建立平-直联合开发井网数学模型,采用Euler方法追踪生成平-直联合开发井网流线,结合流管法实现线性直—平联合开发井网产液量变化计算。分别讨论了不同渗透率级别线性平-直联合开发井网水平井的产液量变化规律,模拟研究了两口实际井验证方法的可行正确性。研究表明,该方法进行线性平-直联合开发水平井产液量变化模拟正确可行,该方法对于实际开展水平井产液量变化研究工作具有重要意义。

Now the horizontal well technology has been one of the key technologies for development of oil gas fields, it is of great importance to carry out study of horizontal well technology with the further development of oil gas fields. In this paper, a mathematical model of horizontal-vertical well pattern was built based on the Green＇s function, streamlines of horizontal-vertical well pattern were given with the help of Euler method, combined the stream-tube method, the fluid production change of linear horizontal-vertical well pattern was calculated finally. Linear horizontal-vertical well pattern models for different levels of permeability were built, the rule of fluid production change of the linear horizontal-vertical well pattern was analyzed and discussed. At the same time a simulation based on that method was carried out, results of the models were fitted the measured data very well, and the validity and the correctness of the method were proved. The research proved that the method can be used in simulation of the linear horizontal-vertical fluid production change, and it can played a great role in the research of horizontal wells.