论文部分内容阅读
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 .
Using the theory of conformal mapping, mirror reflection and potential superposition theory, the five-point rectangular well pattern with horizontal wells and vertical wells is theoretically studied. The productivity formula of horizontal wells under rectangular well pattern is deduced The result shows that the influence of well pattern area and reservoir thickness has no significant effect on the optimal shape factor of well pattern. With the increase of dimensionless length of horizontal well, The optimal shape factor also increases, that is, the deviation of the well pattern from the square is greater. The larger the reservoir thickness is, the smaller the horizontal wells are. The results can be used in the design of the field development plan and capacity prediction.