抗盐弱凝胶调驱体系性能评价

The performance evaluation of salt resisting weak gel profile control and flooding system

高矿化度的地层环境在采用弱凝胶调驱时,容易导致弱凝胶体系凝胶强度下降,并且形成的弱凝胶稳定性也较差。经过大量的实验研究研制出了针对高盐油藏的抗盐弱凝胶调驱体系。本文主要从抗盐性能、封堵性能、驱油效率等方面,对该体系进行性能评价,以确保该体系能够切实解决高盐油藏在开发中面临的困难。

When using of weak gel profile control and flooding system,high salinity formation environment could easily lead to gel strength decreased of weak gel system,and the gel sta- bility was poor.A salt resisting weak gel profile control and flooding system for high-salt reservoirs was developed by a large number of experiments.In this article,performance evalu- ation of the system was done from the salt tolerance,sealing performance and oil displace- ment efficiency etc,to ensure that the system can effectively solve the difficulties in develop- ing high-salt reservoirs.