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利用平面非均质填砂模型进行了有机交联聚合物封堵的油藏物理模拟实验 ,对比研究了水驱、聚合物驱和交联聚合物封堵对开采效果的影响。通过布置 4 9个高精度的压差传感器测量交联聚合物封堵过程中油藏压力场的动态变化 ,用数码相机照相定性地观察了油藏流体变化情况。实验中发现 ,交联聚合物封堵最终采收率比水驱提高 33% ,比聚合物驱提高 14 %。交联聚合物能有效地封堵高渗条区 ,形成“段塞” ,改变了油藏内流体流动方向 ,扩大了波及范围 ,驱替出低渗区的油 ,提高了采收率。
The reservoir physical simulation experiment of organic cross-linked polymer plugging was carried out by plane heterogeneous sand filling model. The effects of water flooding, polymer flooding and cross-linked polymer blockage on the mining results were compared. By arranging 49 high-precision differential pressure sensors to measure the dynamic changes of the pressure field in the process of plugging the cross-linked polymer, the digital camera was used to qualitatively observe the reservoir fluid changes. It was found in the experiment that the ultimate recovery of cross-linked polymer plugging was 33% higher than that of water flooding and 14% higher than that of polymer flooding. The cross-linked polymer can effectively block the high permeability zone, forming a “slug”, changing the flow direction of the fluid in the reservoir and widening the reach of the oil, driving out the oil in the low permeability zone and improving the oil recovery.