Ban-876 Gas Storage Production Performance Analysis And Adjustment Scheme Research

Underground gas storage plays an important role for balance the supply and demand and pitch peak of natural gas.After multi-cycle runs,Ban-876 gas storage still not achieve the design objective on the whole,the gas production is lower than the design production.Slow speed of attain storage capacity and gas with water mutual penetration affect the efficient operation of the gas storage.Base on gas storage can attain design objective and efficient operation as soon as possible,this paper analyze the geology of gas storage.Through describe of the geologic feature and reservoir connectivity and sealing ability evaluation,had an entire understanding of the area the gas storage in,good cover coat and reservoir permeability,faults were less likely to reopen.Recheck storage capacity of gas storage use materials balance approach,volumetric method and numerical simulation method.The storage capacity were confirmed close to the design value with change rule analysis,and scarcely expand capacity.Use the actual production data to analyze the gas injection dynamic of 5 injection-production wells,gas recovery dynamic of 7 gas recovery wells,and the overall working gas capacity,produced water and operational dynamics.There were three reasons for the low working gas capacity,low degree of well pattern consummation,water invasion and fluid relationship complexity inside the gas storage.4-6 injection-production wells could be arranged on the basis of remaining uncontrolled reserves.Study adjustment scheme of attain storage capacity base on the analysis result,adopt project that adjust the well pattern and deploy new injection-production well to adjust production of gas storage.And proved for position of 4 new injection-production wells,predict gas production and new working gas capacity.