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针对苏里格气田部分下古气井产气因含有硫化氢而导致气井开发受限的现状,通过调研国内外脱硫工艺,根据苏里格气田含硫单井分布、分散脱硫和低投资成本等特点,优选氧化铁干法脱硫工艺进行橇装化设计,并采用市场委托服务模式进行现场试验,对试验结果及经济效益进行分析和评价。结果表明:井口含硫天然气经橇装化设备脱硫后含硫量低于20mg/m3,达到净化要求。脱硫剂平均更换周期为34d,现场各项试验参数达到设计要求,橇装化工艺流程设计合理,脱硫效果显著,试验井由关井状态转变为脱硫净化生产状态,经济效益显著。(表2,图1,参5)
In view of the current situation that gas production is restricted due to the presence of hydrogen sulfide in some ancient gas wells under the Sulige gas field, by investigating domestic and international desulfurization processes, according to the characteristics of sulfur single well distribution, dispersed desulfurization and low investment cost in the Sulige gas field , Preferably iron oxide dry desulfurization process skid design, and the use of market commissioned service mode for field testing, test results and economic benefits analysis and evaluation. The results show that the sulfur content of wellhead sulfur-bearing natural gas after desulfurization by skid-mounted equipment is less than 20mg / m3, which meets the purification requirements. The average replacement period of desulfurizer is 34 days. The test parameters of the site meet the design requirements. The design process of skid-mounted process is reasonable and the desulfurization effect is remarkable. The test well changes from shut-in state to purifying state of desulfurization with obvious economic benefits. (Table 2, Figure 1, reference 5)