Optimization of cyclic gas injection parameters in Dalaoba Condensate Gas Reservoir

Due to retrograde condensate and water invasion effect in the failure type development of the Dalaoba Condensate Gas Reservoir, there was a rapid decline in gas well productivity. In order to enhance recovery, a cyclic gas injection strategy was adopted. During the cyclic gas injection production period, the injection-production parameters were the key index to influence gas recovery and economic benefits. For the water-drive gas condensate reservoirs which were in the middle and late stages of development in the Dalaoba area, numerical simulation was conducted in this paper to optimize the parameters including injection-production mode, injection-production ratio, etc. The purpose of this research was to improve the effect of cyclic gas injection production by optimizing parameters and scheme.