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为了研究在水驱及聚驱的基础上,水平井-直井联合布井方式对提高侧积夹层采收率的影响情况,根据数模研究的注水方向和水平井起始及终止位置对采收率的影响,优选了侧积夹层水平井的布井位置研制了侧积夹层室内物理模型进行了室内实验研究。结果表明:采用直井注水井注-水平井采的实验方案,含水率下降了17%,采收率提高了4.99%;采用直井油井注-水平井采的实验方案,含水率下降了25%,采收率提高了4.83%;采用直井油水井合注-水平井采的实验方案提高侧积夹层采收率9.82%,;远离水井及油井的侧积体剩余油多,临近油井的侧积体剩余油少,直井水井与油井同时注高浓聚合物,水平井分段开采时侧积体1、2、3分别提高采收率1.73%、6.98%、5%.但水平井不能穿过侧积体4,否则总采收率会下降。
In order to study the effect of horizontal well-vertical well combined well-drilling method on improving recovery of side-zone intercalation on the basis of water flooding and poly-flooding, according to the water injection direction and the start and end position of horizontal well in numerical simulation, Rate, we optimize the indoor physical model of side-zone interlayer and carry out laboratory experiment. The experimental results show that the water cut rate decreases by 17% and the recovery rate increases by 4.99%. With the experimental scheme of vertical well injection well and horizontal well, the water cut rate drops by 25% The recovery rate increased by 4.83%. The experimental plan of vertical well-oil well injection-horizontal well drilling increased the lateral reservoir recovery by 9.82%. The residual oil in the side-zone far away from the well and the oil well was more, The residual oil is less and vertical well wells and oil wells are injected with high concentration polymer at the same time. When the horizontal well is sectioned and mined, the accumulations 1, 2 and 3 increase the oil recovery by 1.73%, 6.98% and 5% respectively, but the horizontal wells can not pass through Integral 4, otherwise the total recovery rate will decline.