论文部分内容阅读
三元复合驱油技术是大庆油田在勘探开发后期实行三次采油进而提高原油采收率的有效方法之一,但是由于聚合物、碱、表活剂等化学剂的引入,在提高采收率的同时也产生了一系列的问题[1],其中随着注入三元及注聚时间的延长推移,注入端注入能力下降问题尤为突出,已成为制约示范区正常供液开采的最大阻碍之一,对三元复合驱扩大应用的产生一定的影响。本文将从示范区注入质量及注入能力俩方面入手,通过对注采俩端异常现象进行研究分析,找出引起示范区注入效果变差的主要原因,为今后油田改善类似现象提供参考意见及建议。
ASP flooding is one of the effective methods for Daqing Oilfield to carry out tertiary recovery and recovery of crude oil in the late stage of exploration and development. However, due to the introduction of chemical agents such as polymer, alkali and surfactant, At the same time, a series of problems have also arisen [1]. Especially with the injection of ternary and injection time prolonging, the problem of injecting ability at the injection end is particularly prominent, which has become one of the biggest obstacles that restrict the normal liquid supply in the demonstration area, Expansion of the application of ternary composite flooding have a certain impact. This article will start from the injection quality and injection capacity of the demonstration area. By analyzing and analyzing the anomalies of both ends of the injection and extraction, we can find out the main reasons that lead to the deterioration of the injection efficiency in the demonstration area and provide suggestions and suggestions for improving the similar phenomena in the future .