CAJ | 학술논문

以单井开采系统为研究对象,采用温度、压力解耦建模与数值耦合方式,以井口油压为控制条件,通过油嘴控制流量和下游温度,建立井下节流气井的井筒-气藏流动耦合的生产动态预测模型,利用试井解释结果或生产动态历史拟合,预测气井的生产流量、压力变化,同时描述生产过程中的井筒非线性温度剖面、压力剖面,从而全面掌握节流气井的生产动态,并可进一步扩展应用于多相流动和复杂井眼轨迹情况.
이단정개채계통위연구대상,채용온도、압력해우건모여수치우합방식,이정구유압위공제조건,통과유취공제류량화하유온도,건립정하절류기정적정통-기장류동우합적생산동태예측모형,이용시정해석결과혹생산동태역사의합,예측기정적생산류량、압력변화,동시묘술생산과정중적정통비선성온도부면、압력부면,종이전면장악절류기정적생산동태,병가진일보확전응용우다상류동화복잡정안궤적정황.
The production prediction model of down-hole throttle gas well with well-bore and gas reservoir flow coupling is established in this paper,the temperature and pressure decoupling model and numerical coupling is adopted for single-well production system.It takes tubing-head pressure as setting conditions,rate and downstream temperature are controlled by choke,which can forecast rate and pressure change of gas well by well-test interpretation and history match,and nonlinear well-bore temperature and pressure profile in production process are described.Accordingly,the production performance of throttle gas well can be investigated comprehensively.The route can be extended to multiphase flow and complex well trajectory.