Abstract:

The mathematical model of alkaline - component transport in porous media was established, in which the needed physical - chemistry parameters were expressed as the related functions of flooding agent concentration. Annualized with’Effective Zone’, the mechanism that adsorption, slug size, displacement velocity, dispersion - diffusion influence on validity of alkalinecomponent transport processes is analyzed. Based on these, the validity and durability of NaOH transport in porous media in Daqing Oilfield ASP system were further studied, and the results of the simulator proved to be well concerted with physical simulation results. The simulator can not only replace part of flow experiment and auxiliary mechanism analysis,but also provide a guidance for alkaline and ASP flooding engineering and technology design and dynamic behavior monitoring.

Key words: chemical flooding, alkaline component, porous transport, mathematical model, simulation