Research Of Deep Profile Control In Gao 18 Block

In order to solve the problems(The quality of water used for profile control agent was not stable.The agent was unstable for gel-forming.The injection parameters were uncertain.)that occur in Gao 18 block in Liaohe Oilfield,the research of deep profile control in Gao 18 block was carried out.In this paper,the main factors that affect gel-forming were analyzed.Through experiment,the formulation of the agent was determined and the standard of water quality was made.On this basis,the profile control system was optimized,with heat-resistant up to 65 ℃ and plugging rate reached 92.7%.The influence of injection parameters on the effect of the profile control was evaluated.The profile control scheme was set up and the effect was predicted.It is proved that the new agent could enhance oil production greatly.