聚合物驱油目前是大庆油田可持续稳产的一种主要三次采油技术,其聚驱的核心是扩大油层波及体积与提高油层动用厚度。随着开采程度的不断深入,XX工业区全面进入含水回升期,该阶段注入剖面开始返转,采聚浓度大幅度上升,平面受效差异进一步加大,因此在注聚后期阶段需要一套相应的调整手段有效提高聚合物利用率,在油层动用厚度提高的基础上,以井组、单砂体为调整单元,结合平面和纵向上进一步扩大聚合物的波及体积,提高聚驱开发效果。 Polymer flooding is currently a major tertiary recovery and sustainable production technology in Daqing Oilfield. The core of polymer flooding is to expand the reservoir volume and increase the thickness of the reservoir. With the continuous deepening of mining degree, XX industrial zone fully entered the water-bearing recovery period. At this stage, the injection profile began to turn back and the concentration of the collected-condensate increased sharply, and the difference in the plane efficiency further increased. Therefore, Based on the adjustment of the thickness of the oil layer, taking the well group and the single sand body as the adjustment unit, the volume and volume of the polymer are further expanded in the plane and the longitudinal direction to improve the development effect of the poly flooding.