Triple High Gas Field Hydrogen Sulfide Leakage And Dispersion Simulation And Research On Classification And Early Warning

Natural gas is becoming more and more important as a clean energy in national product, and also showes a rising trend in demand. In order to meet the domestic consumption of natural gas, more and more natural gas reservoirs are under development, including triple high gas field which means high pressure, high productivity and high hydrogen sulfide concentration. Due to the high hydrogen sulfide concentration, huge risks lie in the exploring and developing process. Once hydrogen sulfide leaks, it will affect a wide range and bring significant losses to people's production and living.Based on this situation, this dissertation used numerical simulation method as theoretical basis , established physical model of the well site and used FLUENT software to simulate hydrogen sulfide leakage on the triple high gas field, provided a theoretical basis for triple high gas field classification and early warning through analyzing the simulation results and China's actual conditions.Nature gas containing hydrogen sulfide was jetted from the leak hole under calm wind condition, it showed that the wind could hardly effect the shape of hydrogen sulfide cloud during the course of diffusion, danger zone was around the leak hole in a small range.The content of hydrogen sulfide in natural gas impacted the emergency area significantly, the area of danger zone increased rapidly on the down wind direction. If the leakage amount was small, safety zone under down wind direction changed little in calm wind condition...