Control technology of water flooded wells in Daniudi gas field and its application

Daniudi gas field was characterized by typical low pressure,low porosity and low permeability,and when it entered the mid-late stage of gas field development,the production and pressure continued to decline,and the production and pressure could not meet the liquid carrying demand,which resulted in liquid loading and decreased production in gas wells,and the frequency of suspended production increased due to water flooding.To tap the potential and improve the production of flooded wells,the reproduction technology of water flooded wells was carried out.Combined with field application test of production process in flooded wells,applicable conditions and design of the process parameters of different recovery process of flooded wells were summarized,and a set of water flooded well control technology suitable for the Daniudi gas field was established,which provided a good guidance for re-production technology of the water flooded wells.