Preliminary Study on Integrated Simulation of Natural Gas Gathering Pipeline Network

The steady-state hydraulic and thermal simulation of the gas gathering pipeline network with predicting methods of natural gas hydrates are discussed in this paper. Compressors, valves, heating furnaces and other equipment in pipeline network are also considered. Nodal analysis method accompanied by the linear approximation is implemented to solve the hydro thermal simulation equations. Chen-Guo model is used for calculating hydrate phase equilibria and secant line method is applied to solve this model. Steady-state simulation and hydrate prediction results of the pipeline network are compared with the calculation results of TGNET and literature respectively. The results show the effectiveness and accuracy of the pipeline network steady-state simulation and hydrate prediction methods.