Deep airflow control agent for production well as well as preparation method and application of deep airflow control agent

The invention provides a deep airflow control agent for a production well as well as a preparation method and an application of the deep airflow control agent. The control agent is prepared from a reaction liquid A, water and a reaction liquid B, wherein in terms of the reaction liquid A with total mass being 100%, the reaction liquid A is prepared from sodium hydroxide, silicon sludge, sodium bentonite, polyvinyl alcohol and high-silicon sewage; in terms of the reaction liquid B with total mass being 100%, the reaction liquid B is prepared from calcite powder, fluorite powder, talcum powder,stearic acid and calcium type brine. The deep airflow control agent for the production well can be applied to profile control and water plugging of a high-temperature and high-salt oil reservoir production well. The invention further provides a preparation method of the deep airflow control agent for the production well. The deep airflow control agent for the production well is good in temperatureresistance and high in pl