Research and application of high temperature gel plugging agent

High temperature gel plugging agent was constituted of HG modified resin, cross-linking agent, HS solid particles. In this paper, the factors such as modified resin, cross-linking agent, salinity and HS solid particles, temperature on gel were studied. And the function of agent high temperature gel plugging agent was tested. High temperature gel plugging agent has some characters. For example, it can form gel at a low temperature, and isn't affected by salinity. It has high strength, and its forming gel time was adjustable. The agent was used in 42 wells, which steam injection pressure were increased largely. The plane and vertical contradictions were improved. The wells product more oil. High temperature gel plugging agent improve steam effect. The application results show that the high temperature gel plugging agent was suitable for water blocking in multiple rounds of steam injection.