Low elastic polymer microsphere (L-EPM) had been a promising conformance control agent with the wide application of polymer microspheres. The filtration loss characteristics, core damage and selective conformance control performance of L-EPM conformance control system were studied. The results showed that L-EPM system had less damage to the matrix core and the influence of filtration loss on conformance control treatment could be neglected in indoor experiments. When the high permeability layer was fixed, the larger the permeability ratio, the better the profile improve ability. For the cores with same permeability, water plugging rate of L-EPM system was much higher than that of oil plugging rate. For heterogeneous reservoirs with interlayer channeling, the plugging position of L-EPM determined the conformance control performance and the following oil recovery. L-EPM with good deformation and shear resistance had good adaptability to the conformance control treatment in heterogeneous reservoirs with interlayer channeling.

随着聚合物微球的广泛应用，低弹性聚合物微球（L-EPM）已成为一种有前途的一致性控制剂。研究了L-EPM一致性控制系统的过滤损失特性，堆芯损伤和选择性一致性控制性能。结果表明，在室内实验中，L-EPM系统对基质核心的损害较小，过滤损失对一致性控制处理的影响可以忽略。当固定高磁导率层时，磁导率比越大，轮廓改善能力越好。对于渗透率相同的岩心，L-EPM系统的堵水率远高于堵油率。对于具有层间通道的非均质油藏，L-EPM的堵塞位置决定了一致性控制性能和随后的采油量。L-EPM具有良好的抗变形性和抗剪强度，对层间窜水的非均质油藏的一致性控制处理具有良好的适应性。