Mechanism and Experiment Study on Surfactant Solution to Block Methane

Combined with the surfactant solution on the nature and conditions of use, the feasibility that the surfactant solution blocks methane gas was analyzed theoretically and the mechanism that the surfactant solution blocks methane gas was explained. The screened surfactants were made the performance test and combination. We did a series of experiments about high-gas coal mine sample by using the FTA200 dynamic contact angle analyzer and the self-developed gas desorption testing system. The results showed that the surface tension and contact angle significantly reduced and methane desorption capacity declined by 64.72%. We primarily concluded that it had a clear mechanism and marked experiment effect to use surfactant solution to block gas, which laid the foundation for a new way controlling the coal mine gas.