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《Chemical Engineering of Oil & Gas》 2012-02
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Study on the diffusion regularity of H_2S under different obstacle slope

Zhang Baozhu 1,Wang Xiuhong 2,Gao Jun 1,et al(1.China Petroleum Pipeline Domestic Division,Langfang 065000,Hebei,China;2.Synfuels China Engineering Co.,Ltd,Beijing 101407,China)  
Aimed at the blowout accident under complex landform,five obstacle models with different slope were set including twenty degree,thirty degree,forty degree and fifty degree in order to study the spread regularity of the H2S.Computational Fluid Dynamics(CFD) software Fluent was used for the simulation of H 2 S diffusion.Then the concentration values of H 2 S about the windward side and the leeward side under the condition of wind were obtained from results of the simulation.The results show the obstacle models with different slop have different influence to H2S spread when H2S diffused to stable state.First,the concentration of H 2 S will increase on the ground as the slope becomes steeper no matter at the windward or leeward side.Second,the concentration of H 2 S at the windward side has a larger difference compared with the leeward side.The results of the simulation provide some guidance about the diffusion regularity of H2S at the complex landform and the selection of the location about the well site.
【CateGory Index】: TE38
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