Performance evaluation of a new selective plugging agent system for water producing gas well

To evaluate the performances of a new selective plugging agent system, the lab experiments are carried out, it can be concluded that: The plugging agent system has the ability of selective plugging for water and gas; with the increase of the water saturation, the plugging rate of both water and gas are increased; under the same water saturation, the larger the permeability is, the lower the plugging rate is; with the increase of the water saturation, the entering depth of the plugging agent is reduced, but its effect is less than the permeability. The studying results provide theoretical reference for the selective plugging of water of water production gas well.