In view of the shortcomings of short operation time and frequent relocation during drilling and completion testing of oil and gas wells,the existing dry or wet desulphurization process requires many equipment,complicated process,long construction and installation period,and difficult in operation,a kind of liquid compound desulfurizer with in-situ regeneration is developed by combining the special compound of auto-oxidation and self-reduction with variable valence metal ion catalyst.The influence of catalyst concentration,pH value,carbon dioxide,and temperature of the desulfurizer on the desulfurization effect is experimentally studied.The results show that when the pH value is 8-13,the sulfur capacity is not less than 330 g/L.When the mass concentration of metal ion catalyst in desul-furizer is not less than 500 mg/L,the desulfurization efficiency is greater than 99.9%,and when the carbon dioxide content is less than 27%,the impact on the sulfur capacity mass fraction is less than 3% .The desulfurizer has the characteristics of fast reaction,large sulfur capacity,strong adaptability,strong selectivity,and convenient loading.It provides a new means for natural gas desulfurization during drill-ing and completion testing of oil and gas wells,and lays a foundation for the popularization and applica-tion of in-situ regeneration liquid compound desulfurizer of natural gas.
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