摘要
城市天然气季节性消费量的变化决定了天然气地下储气库的注采动态运行过程 ,由于储库地质构造的非均质性以及储层存储和传输流体能力的不同 ,若库内井的注采量不合理 ,可能导致局部压力升高过快 ,使天然气溢失甚至发生危险 ;或者压力降过大 ,使岩石骨架上覆压力增高过猛 ,底水锥进 ,降低储层原有的渗流特性。本文通过论文 中所建立的底水驱枯竭气藏型天然气地下储气库的注采动态数学模型 ,在冬、夏季储库的运行分别以压缩机站最小的功率消耗和使城市能获得储库最大的调峰采气量为目标函数 ,根据其各自约束条件 ,采用复型调优法 ,建立了储库冬夏季的最佳运行模式 。
The change in seasonal city natural gas consumption decides the injection production performance process of underground natural gas storage.Owing to the heterogeneity of geological structure used as underground natural gas storage and different capacities of storing and transmitting fluid in reservoir,if the proration for each member of the injection and production wells within the storage is unreasonable,the storage pressure may be locally increased superfast,thus causing natural gas to be lost even in danger;or the storage pressure decreased strongly,thus causing the overlying pressure upon rock matrix great increase,the bottom water coning and the original flow condition in reservoir to be reduced.According to the injection production performance mathematical model of underground natural gas storage of bottom water drive depletion type gas reservoir which was proposed by the first author in her doctoral thesis,in the running of gas storage,the minimum power consume at compressor station and the maximum peak shaving gas production supplied to city are taken as the objective functions in summer and winter respectively;then in light of each restrict conditions,the optimum running modes in summer and winter are set up by use of composite optimum regulating method,thus providing a theoretical fundament for optimizing running mode of a practical underground natural gas storage in seasonal peak shaving.
出处
《天然气工业》
EI
CAS
CSCD
北大核心
2001年第3期86-89,共4页
Natural Gas Industry
