异常高压气井生产动态仿真研究及应用

异常高压气井生产动态仿真方法不仅改变了传统物理仿真成本高、过程复杂的缺点,而且具备了计算机仿真模拟的准确性。考虑异常高压气井流体高压、高温的特点,本文将异常高压气井生产压降分解为地层流动压降、井筒流动压降和嘴流流动压降三个过程,并建立了气井生产动态流动数学模型;本文利用计算机仿真技术模拟了异常高压气井地层流体流动过程、井筒流体流动过程和气嘴流体流动过程,并预测了气井生产动态流动参数,为下步异常高压气井动态配产提供了基础数据。通过实例分析,将计算机仿真预测出的异常高压气井流动参数代入优化配产模型计算出配产结果与实际配产结果十分接近,表明异常高压气井生产动态仿真对实际生产具有重要的指导意义。

Study and Application for Abnormally High Pressure Gas Well Production Dynamic Simulation

The method of abnormally high pressure gas well production dynamic simulation not only changes shortcomings of the traditional physics simulation,which have high cost and the complex process,.but also possesses the accuracy of computer simulation.Considered the high pressure and the high temperature of the gas well's fluid,this paper decomposes production flow pressure drop into three processes for abnormally high pressure gas well,which includes formation fluid pressure drop,borehole fluid pressure drop and gas nipple fluid pressure drop.The mathematical model for gas well production is established in this paper.This paper simulates formation of fluid flow,borehole fluid flow and gas nipple fluid flow of abnormally high pressure gas well by using computer simulation technology and forecasts production dynamic flow parameters.It's also provided the basic data for abnormally high pressure gas well dynamic prorating production.Through the example analysis,on base of the abnormally high pressure gas well flow parameter by computer simulated,the theory prorating production results that are calculated by optimizing prorating production method is very close to actual prorating production results.It also includes that abnormally high pressure gas well production dynamic simulation is of guiding significance in production practices.