In order to improve the development effect of bottom-water gas reservoir,prevent bottom-water from coning too fast and causing watered-out and stopped-flow of gas well,and improve the limitations of the current calculation method of critical water cone produc-tion.This paper first established the equivalent numerical method of dynamic water cone critical production considering the characteristics of geological reservoir and the change of calculation parameters with production time.Through the selection of key parameters and applicability analysis,this method is proved to be more widely applicable than the analytical method,and the reasonable gas recovery rate should be lower than 5％in the initial stage of strong bottom water gas reservoir.Through practical application,the accuracy of the calcu-lation method for critical production of dynamic water cone is verified,and controlling the gas well production under the dynamic water cone critical production can effectively improve the development effect of gas reservoir.
关键词
底水锥进/采气速度/临界产量/产能计算/数值模拟/提高采收率
Key words
bottom water coning/gas production rate/critical production/productivity calcu lation/numerical simulation/improving recovery
维普
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