论文部分内容阅读
某油田河道砂体发育以窄小河道为主,平面连续性差,多呈断续条带状或零星分布。油层孔隙度、渗透率低,非均质性严重。油田开发二十几年来,通过不断的注水开采,在油层内部发育相对较好的河道已经动用程度非常高,但由于层内的非均质性,层内发育相对较差的砂体未动用。其中注采关系完善的河道砂体综合含水已经达到94.56%、采出程度仅为29.94%,靠注水结构调整层间控制高含水井、层的注水量和产液量有一定的作用,但对于层内调整作用较小。有机铬聚合物凝胶是一种比较成熟,广泛应用于油田开发的调剖技术。聚合物凝胶具有强度大,稳定性高,注入容易的特点,在某种条件下还具有一定的选择性。
The development of river sand bodies in some oilfields is dominated by narrow river courses with poor continuity of the plane and mostly intermittent bands or sporadic distribution. Reservoir porosity, permeability is low, serious heterogeneity. In the past 20 years since the oilfield was developed, continuous development of waterflooding has made a very high degree of utilization of relatively well-developed channels in the reservoir. However, due to the heterogeneity in the reservoir, relatively poorly developed sand bodies are not used. Among them, the comprehensive water content of channel sandbody with the good relationship between injection and production has reached 94.56% and the recovery rate is only 29.94%. It has certain effect by adjusting the water injection structure to control the water injection volume and fluid production volume of the high-water well and the layer, Layer adjustment effect is smaller. Organic chromium polymer gel is a more mature and widely used in the development of oil profile control technology. Polymer gels have the advantages of high strength, high stability and easy injection, and have certain selectivity under certain conditions.