水平井与直井联合开采问题——五点法面积井网

COMBINED PRODUCTION OF VERTICAL AND HORIZONTAL WELLS——A 5-Spot Well Pattern

介绍了一种水平井面积井网(五点法注采井网)的渗流力学求解方法.在稳定流情况下.用一种形式简单的茹可夫斯基函数作变换.获得了压力分布、产量计算、见水时间及面积扫油系数的公式.根据公式和实例运算可得到水平井穿透比对渗流速度和波及系数等的影响,对于油藏工程研究具有一定实用意义.

In this paper a hydrodynamic method for solving the flow problem of an areal waterflooding system (5-spot well pattern) is introduced. The pressure distribution, production rate, breakthrough time and areal sweep efficiency can be determined based on the procedure of M. Muskat and by using the Jucouvski transform function. The calculation of a example has demonstrated the influence of horizontal well length ratio on the flow rate and sweep efficiency. Proposed here method is of importance for reservoir engineering study.