Based on the randomness and structural characteristics of permeability, the heterogeneous permeability was represented by an equivalent homogeneous permeability and heterogeneous skin varying along the wellbore. On this basis, a production profile model for horizontal wells in anisotropic box-shaped reservoirs was proposed and a profile control method using variable-density perforations aiming at uniform recovery was presented. The pressure adjustment range and influencing factors were analyzed quantitatively. The results show that the smaller the perforation density and depth, the larger the pressure adjustment range. After optimization, perforation density in low-permeability zone is bigger than that in high-permeability zone. With the increase of near-well permeability variability, the profile balance deteriorates, and the perforation density range increases. The smaller the perforation density, the greater the impact of rounding error, and the less satisfactory the profile control.%基于渗透率随机性和结构性特点,将非均质渗透率场转化为等效均质渗透率场和沿井筒变化的非均质表皮.在此基础上建立各向异性盒式油藏水平井产液剖面计算模型,提出以均衡产液剖面为目标的非均质油藏水平井变密度射孔调剖方法.从射孔调剖机制出发,系统分析射孔调压范围及影响因素.结果表明:孔密、孔深越小,射孔可调压差范围越大;以均衡产液剖面为目标优化孔密后,低渗区孔密较大,生产压差较高,高渗区孔密较小,生产压差较低,产液剖面均衡性明显改善;近井渗透率变异性越强,孔密波动幅度及变化范围越大,低孔密所占的比例也越大;孔密越低,舍入误差的影响越大,调剖效果越不理想.
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