Skid-mounted desulfurization technological design of wellhead in Sulige Gas Field

In view of the situation where the produced gas of part upper paleozoic gas well of Sulige Gas Field is restricted in development due to the presence of hydrogen sulphide, by investigating desulfurization technologies at home and abroad, according to the characteristic of Sulige Gas Field, such as distribution of single well containing sulfur, decentralized desulphurization and low investment cost, etc, this paper preferred skid mounting design with iron oxide dry desulfurization technology, and carried out field tests with a market commissioned service mode, and carried out analysis and evaluation of test results and cost-effectiveness. The results show that the sulfur content of natural air containing sulfur in the wellhead can be less than 20 mg/m³ as after desulfurization of skid-mounting equipment, satisfying purify requirements. The average replacement cycle of desulfurizer is 34 days, all field test parameters can meet the design requirements, and skid-mounting technology design is reasonable, with a significant desulfurization effect. Test wells can be converted from shut-in status into desulfurization and purifying production state, thereby achieving significant economic benefits.