Water production analysis and reservoir simulation of the Jilake gas condensate field

The development of the Jilake gas condensate field is dominated by production of old wells, with complication of well status, serious impact of edge-bottom water, and difficulty in development and adjustment. Through integration of formation water salinity analysis, color and density change of oil samples, diagnostic curve characteristic of modern production decline analysis and characteristic analysis of production water, the reason for water production is analyzed as follows: gas wells with low water production are affected by local connate water, while gas wells with high water production are influenced by the bottom-edge water. Integrated with domestic and overseas modeling of oil rim gas condensate reservoir, the fine geological model is built by Petrel geo-modeling software, and the approaches of non-equilibrium initialization and parameters initial value assignment is used to form the initialization model of the gas condensate field, in order to correctly portrait the oil rim and local connate water. On the basis of single-well water production analysis, the geological model is corrected through performance dynamic history match. The result provides a base and foundation for later development adjustment of this gas condensate field.