磨溪气田从１９９１年２月试采到１９９ｄ年３月进入全面开发阶段，至今已四年多时间。部分单井由于受Ｈ＿２Ｓ和含硫气田水的严重腐蚀，修井费用日渐增加。为了加快气田开采速度，减少单位产量的修井费用，势必要求扩大现有天然气净化装置的处理能力。本文对装置扩产原因，运行状况及扩产全面核算情况等作了说明，并对扩产方案进行了探讨。 Moxi gas field trial production from February 1991 to 199d March into full development stage, it has been more than four years. Some single wells due to the H_2S and sulfur gas field water corrosion, workover costs increasing. In order to speed up gas field exploitation and reduce workover costs per unit of output, it is bound to demand the expansion of the existing natural gas purification plant. This article explains the reasons for the expansion of the plant, operating conditions and overall accounting for expansion, etc., and discussed the expansion plan.