【摘要】 受非均质性影响,注水井周围各方向吸水量差异巨大,从而影响了水驱前缘的运动方向。结合岩心组合模型实验及现场取心数据,在贝克莱-列维尔特公式的基础上,提出了针对非均质油藏水驱前缘计算的新方法。利用该方法对王窑地区实际井组进行计算,结果表明,水驱前缘的运动方向即井组的优势注水方向为南北主轴东北方向40°、南北主轴西北方向20°,与微地震测试结果进行比较,误差仅为3%,符合度较高。经过公式预测,注水开发9 a后井组中w6井首先见水,后经过2 a的开发,w2井见水,在此基础上针对井网加密调整方案提出相应建议。以均质油藏的计算方法计算同一井组,注水优势方向以及突破时间误差均较大,新的计算方法具有明显优势。更多还原

【Abstract】 Due to heterogeneity,the water absorption in all directions around water injection well varies greatly,restricting the heading of waterflood front. With the experiment of combined core model and the field coring data,a new calculation method based on Buckley- Leverett formula is proposed for waterflood front in heterogeneous oil reservoir. This method is used for a well cluster in Wangyao area,indicating that the heading of waterflood front,namely,the predominant water injection direction in the cluster,is40° northeast and 20° northwest of S- N axis,with only a 3% deviation from the microseismic test results,which presents a high coincidence. Based on the predication with the formula,water breakthrough occurs in Well w6 after 9a of water injection and then in Well w2 after 2a of development. On this basis,recommendations are put forward on well infilling. Moreover,the calculation method used for homogeneous oil reservoir is applied to the same cluster,showing large errors in predominant water injection direction and water breakthrough time. Therefore,the new method is more favorable,更多还原