A Feasibility Analysis of Three Numerical Schemes for the Prediction of Two Phase Transient Flow

This paper presents a coupled system model of partial differential equations concerning the variation of pressure and temperature, velocity and density at different time and depth of two-phase flow wells in HTHP statement. LxF, CE/SE and GRP method are modified to solve this set of conservation equations. The basic data of 'X Well' (HTHP well), 7100m deep, located in Sichuan basin, South-west of China, is used for the case history calculations. The comparison of pressures and temperatures calculated by those methods shows that the model is efficient and GRP method is of highest accuracy, which will be an important technical reliance for the process of designing well tests in HTHP wells.