This paper describes the SLAB heavy gas dispersion modeling and uses SLAB View to simulate the H2 S diffusion process and hazardous areas in a sour gas well blowouts .It identifies the influence range of H2 S cloud cluster at specified concentration averaging time ,the time w hen the H2 S cloud cluster of specified concentration reaches the furthest distance ,and the furthest diffuse distance in wind direction .The comparison shows that SLAB View offers an easier and faster option to simu‐late leakage and diffusion process during sour gas well blowouts on flat terrains ,and therefore it is a useful tool for the prediction of the diffusion consequence and influence range .%介绍了SLAB重气泄漏扩散模型，并运用SLAB View 软件模拟了某含硫气井发生井喷事故 H2 S云团的扩散过程和危害区域，得出了H2 S云团在指定浓度平均时间下的影响范围，以及指定浓度 H2 S云团出现在最远距离的时间和最远下风向扩散距离。结果表明，SLAB View 软件能方便、快速地模拟平坦地形下含硫天然气井喷泄漏扩散过程，预测事故泄漏扩散后果和影响范围。
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