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中文摘要：
基于热膨胀效应和环空体积变化效应这两种环空带压机理,结合气井生产过程中井筒温度-压力分布计算方法,考虑油层套管和油管的许可压力值,建立一个深层高温高压气井临界产量计算模型.运用迭代法求解模型,编制相关程序.结果表明：环空压力与主要受温度的影响,气井产量越高,井口温度越高,环空压力越大,油套管安全系数越低,因此需要考虑管柱安全性确定临界流量.利用新疆某深层高温高压气井的实际数据进行实例计算,结果可为深层高温高压气井的合理配产提供依据.
英文摘要：
Based on two annular pressure buildup mechanisms, coupling of wellbore heat transfer and formation heat transfer and coupling of gas temperature and gas pressure, we build a calculation model for critical rate in deep high temperature high pressure（ HT/ HP） gas wells. It takes account of influence of gas well profile, string assembly and fluid properties. The model is solved with programm based on iterative method. Finally, it is applied to a deep HT/HP gas well in Tarim oilfield. Critical rate under several operational modes are calculated and they provide basis for optimum allocation in deep HT/HP gas wells.
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