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Key Words:ultra low permeability reservoir; horizontal well; water flooded; engineering counter-measures
Abstract:Erdos Basin ultra low permeability reservoir using vertical well water injection and horizontal well production, A horizontal well corresponding to several water injection wells, some wells loss capacity for flooding during production. In order to identify water flooded type quickly for water flooded horizontal well, and recovery of the horizontal well productivity. Through the production parameters analysis for water injection well and using the fuzzy clustering method to determine the water breakthrough direction, and the analysis for reservoir property, fracturing, seepage characteristics to establish a reservoir model, and then to optimize the optimum plugging time, the number of plugging agent, the engineering counter-measures through the simulation calculation. The field test shows that the method may determine the direction of flooding, and the optimization water plugging parameters is effective for recovery the productivity of the water flooded horizontal well.
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