In view of the simulation problem of angle between artificial fracture and horizontal well, this paper proposes a new treatment method using perpendicular bisection (PEBI) grid refinement based on the successful commercial numerical simulation software Eclipse. After briefly presenting the method, we compared it with the Cartesian grid refinement method and studied the effect of angel between artificial fracture and horizontal well on the recovery of five-point well pattern which was constructed by four vertical injectors and one horizontal producer. The results indicated that the convergence and the simulation results of the new method were more reasonable under the condition of angle was larger than 0° and smaller than 90°, and the new method could simultaneously simulate several fractures; when horizontal well was single fractured and the angle changed from 15° to 90° with 15° increment, the recovery of 90° was the best, but the recovery of 45° was the worst influenced by early water breakthrough.%针对人工裂缝与水平井筒存在夹角时的模拟问题,提出了一种基于Eclipse数值模拟中PEBI网格加密法的新型处理方法,利用此方法与传统的笛卡尔网格加密法进行了对比,并研究了直井注水—水平井采油的正方形五点井网中夹角对开发效果的影响.结果表明:新方法在处理人工裂缝与水平井筒有一定夹角的情况时,收敛性更好,模拟结果更合理,且能同时模拟多条缝；以15°为递增单元从15°增大到90°,水平井压单缝的条件下,夹角为90°时的开发效果最好,受见水早的影响,夹角为45°时的开发效果最差.
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