Predicting the Distribution of Pressure, Temperature, Velocity, and Density of Transient Flow in HTHP Production Wells by the Finite Difference Method

摘要

A one-dimensional, thermal, transient state mathematical model is presented, which can be used for determining the pressure, temperature, velocity, and density distributions of gas flow. The numerical solution, which consists of mass, momentum, energy conservation equation, and gas state equation, is based on the finite difference method. The data of 'X Well,' 7,110 m deep, in Sichuan, China, is used for case calculations and a sensitivity analysis is made for the model.