【摘要】 利用保角变换、镜像反映和势叠加原理等渗流理论 ,对水平井与直井联合布井的五点法矩形井网进行了理论研究 .推导出了矩形井网条件下水平井的产能公式 ,并给出了水平井长度与最优井网形状的无因次关系 .计算结果表明 :井网面积、油层厚度对井网最优形状因子的影响很小 ;随着水平井无因次长度的增加 ,最优形状因子也增加 ,即井网偏离正方形的程度越大 ;油层厚度越大 ,水平井无因次产量越小 .研究结果可用于现场开发方案的设计及产能预测 .更多还原

【Abstract】 This paper deals with the productivity calculation and the choice of horizontal and vertical wells mixed well patterns. Using conformal transformation and potential superposition principle, an analytical solution of production and optimum for the rectangular mixed well pattern is given. The curves of the optimized shape factor of the rectangular well pattern against dimensionless length of horizontal well are drawn. The results show that the pattern area and formation thickness have little effect on the relationship. As dimensionless length of horizontal well is increased, the optimum shape factor is increased, which means the shape of well pattern is more deviated from square. The production formula and optimum shape factor can be applied to development program design and performance prediction.更多还原