Petroleum And Natural Gas Process Simulation And Equipment Operating Parameters Optimization In Land Terminal

To realize a safe and sustainable gas production, it is necessary to study technological process of oil-gas treatment, thus to ensure system processing devices to keep an efficient working state, as well as a stable natural gas supply. Based on parameters adjustment issue in production operation of terminal unit of oil-gas treatment and basic theory of phase equilibrium, this paper adopted chemical process simulation tools to further analyze terminal technological process, and optimized the process parameters of various process module, so that to achieve an efficient working state of terminal technological process in oil-gas treatment.Firstly, in term of terminal technological process description, the terminal technological process is divided into seven modules, such as pull in pretreatment, gas decarburization, gas dehydration, gas refrigeration, condensate oil stability, gas distribution and pressurization of gas transmission, and carried out a fundamental analysis to technological process of single module and the whole process.Secondly, in terms of process system modeling, by studying status and development of simulation software technology both at home and abroad to select Aspen Hysys as simulation tool, because it has a wide application range and a high recognition in oil and gas industry; Combining with basic theory of phase equilibrium, based on overall process flow diagram of the land oil and gas processing terminal to establish Hysys model’s whole flow of the terminal unit, and using Hysys software based on design parameters to simulate the whole process of terminal processing.Thirdly, comparing the terminal’s existing actual production data with simulation data in terms as gas decarburization, dehydration, refrigeration, condensate oil stability and fractionation unit, in this way the error is relatively small and correctness of the model is verified.Finally, in terms of single device optimization, this paper analyzed the key parameter variable such as MDEA barren liquor’s inlet temperature of stabilizer, pressure in aeration tanks of CO2 absorber, temperature and pressure of MDEA regenerator, operational efficiency of cold separator, material temperature of DHX and pressure in tanks, reboiler temperature of deethanizer bottom, operational efficiency of condensate oil flash separator and stabilizer, so that the optimal working parameters of main devices of each unit can be determined.