Investigation and application of wellbore temperature and pressure field coupling with gas–liquid two-phase flowing

Abstract With the development of gas well exploitation, calculation wellbore with single-phase state affected by single factor cannot meet actual needs engineering. We need to consider simulation complex environment under coupling multiphase and multiple factors, so as better serve petroleum industry. In view problem that commonly used temperature pressure model can only be for conditions, error is large. Combined heat transfer mechanism method pipe flow drop gradient, this study analyzes shortcomings Ramey Hassan & Kabir through transient analysis. Based on equations mass conservation, momentum conservation energy considering interaction between fluid physical parameters pressure, water-bearing established, Newton Raphael iterative MATLAB programming. On basis, relationship tubing diameter, production, gas–water ratio, field in high wells discussed. The results show gas–liquid two-phase has higher accuracy than model, minimum coefficients variation each are 0.022, 0.037 0.042, respectively. Therefore, highly consistent measured data. findings helpful calculate conditions.