Dynamic Analysis Of Development In Su 6 Well Field

The Sulige gas field is currently a large-scale low-permeability gas field discovered in China.As the main production block of Sulige gas field in early period,Su 6 well field has the characteristics of low pressure,low permeability and low abundance.The geological conditions of the gas reservoir are very complicated.The current production situation also shows that the production pressure difference increases,the wellhead pressure decreases rapidly,the single well productivity of the gas well is low,and the economic benefits of the gas field development are not obvious.Therefore,it is necessary to carry out production dynamic analysis on Su 6 well fieldBased on previous research results of Su 6 well field,re-analyze and understand the geological characteristics of gas reservoirs in Su 6 well field.Combining the current development status of gas reservoirs,classify gas wells.Among the 270 wells,there are 42 Type Ⅰ wells,103 Type Ⅱ wells,and 125 Type Ⅲ wells.Analyze the static and dynamic parameters of the gas reservoir,calculate the amount of water intrusion,and judge the type of gas reservoir.The study found that the gas reservoir type in the Su 6 well field is a closed gas reservoir,and the driving type is pneumatic driving.Aiming at the low-permeability gas reservoir in the Su 6 well field,based on the principle of material balance,a method for calculating the current formation pressure of a single well in a closed water-producing gas reservoir considering intermittent shut-in.Then,the types of gas wells of different types were analyzed in decreasing type to verify the dynamic reserves of gas reservoirs,and a suitable production allocation method was proposed according to their production characteristics,which provided a reliable,reasonable and scientific basis for the parallel deployment of Su 6 well field.