低幅底水稠油油藏水平井含水率上升规律

Water Cut Rising Law of Low-Amplitude Heavy Oil Reservoirs with Bottom Water in Horizontal Wells

为确定低幅底水稠油油藏水平井的含水率上升规律,综合考虑动、静态参数,采用数值模拟、水驱特征曲线和生产动态分析相结合的方法,总结不同参数对底水油藏水平井含水率上升规律的影响顺序,获得与各参数相关的线性回归方程,构建水平井含水率上升规律图版。通过与渤海海域中部Q油田水平井生产动态资料对比,该方法预测精度较高,能够为水平井生产制度的调整以及水平井的初期配产提供理论依据。

To determine water cut rising law of low-amplitude heavy oil reservoirs with bottom water in horizontal wells,the paper considersdynamic and static parameters,uses a comprehensive method combining numerical simulation,waterflooding type curves with productionperformance analysis,and summarizes the order of influences of different parameter on water cut variations in reservoirs with bottom waterin horizontal wells.Linear regression equations related to each parameter are obtained and a chart showing water cut rising in horizontalwells is established.Based on the comparison of production performance data in horizontal wells with that of Q oilfield in the middle of Bohai Sea,it is considered that the method has relatively high prediction accuracy,which could provide basis for production system adjustment in horizontal wells,meanwhile provide theoretical basis for horizontal well production allocation at the early stage.