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《Journal of Oil and Gas Technology》 2008-02
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Estimation of Diffusion Extent and Countermeasures for Well Blowout of Natural Gas with Hydrogen Sulfide

QIU Kui(College of Chemistry and Chemical Engineering,Chongqing University of Science and Technology,Chongqing 400010,China)PANG Xiao-hong(Yuzhong Division of Chongqing Natural Gas Co.Ltd.,Chongqing 400010,China)LIU Ding-dong(Chongqing Natural Gas Conditioning Plant,Southwest Oil and Gas Field Company,Chongqing 401220,China)  
The influencial factors of gas leakage and diffusion were analyzed,models used for calculating gas diffusion were introduced.By using well blowout containing hydrogen sulfide for example,Gaussian plume model was chosen to calculate the diffusion extent of well blowout of natural gas containing sulfide hydrogen under conditions different climates and geologic situations,in combination with typical geomorphology in sulfide gas reservoirs.The correlation between H2S diffusion concentration and radius and outcomes induced after well blowout was analyzed,factors influencing the gas diffusion were discussed.The result shows that to accurately calculate the gas diffusion extent,calculating models should be strictly chosen,while uncertain factors would influence the gas diffusion,measures should be taken from the aspects of safe operation,prewarning,emergency measures as well as safety spacing for the purposes of inducing the hazards of well blowout.
【CateGory Index】: P618.13
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