Initial gas full-component simulation experiment of Ban-876 underground gas storage

Abstract Numerical simulation can provide guidance to resolve injection production contradiction during the operation of underground gas storage, it is the key to ensure the smooth operation of underground gas storage. To perform accurate numerical simulation, accurate gas full-component analysis data is essential. In this study, the full-component experiment simulation of Ban-876 underground gas storage was done according to the laboratory experiment natural gas component analysis data. The saturation pressure calculation, phase diagram characteristics analysis, constant composition expansion experiment and constant volume depletion experiment were carried out with simulation methods. Finally, the full experimental data of initial condensate gas component was obtained which can provide reliable equation of state (EOS) parameters for the underground gas storage history matching and effect prediction.