A Study On The Numerical Simulation Parameters Of Microbes Enhancing Oil Recovery

Microbial oil recovery is a improved oil recovery technology which has good application prospects. Meor numerical simulation mainly studies microbial growth and migration in porous media and also biochemical reaction process. Through mathematical models to describe and predict microbial migration rule and function process in the reservoir, which is the important basis of on-site implementation plan and provides an important means of scientific decision-making for meor Research and application of microbial oil recovery technology is of great significance. Years of research shows that, microbial oil recovery simulation parameters’acquisition and analysis is the key matter to limit the microbial oil recovery numerical simulation technology development, which is still in the stage of development.On the basis of predecessors’ work, to meet the need of further perfect of microbial recovery, and from the point of numerical simulation parameter study, this paper carried out the system research on absorption transport and reaction kinetics of microbes, nutrients and metabolites under the condition of simulated reservoir porous media.The static adsorption experiment discussed microbes, nutrition and metabolites static adsorption in quartz sand. It showed that, basically, microorganism, nutrient substrate and metabolites conform to the Langmuir isotherm adsorption model under experimental conditions. And, the static adsorption models of each component were established. The core displacement experiment considered dynamic migration of the microorganism, nutrient substrate and metabolites in sand column and found out the components’migration rules in core porous media and obtained retention parameters. Microbial reaction kinetics in reservoir porous media was studied through microbial culture experiment in core porous media. Reaction kinetics characteristic curves were obtained, and the kinetics models of microbial growth, product formation and nutrient substrate consumption were established, and the curves of each model and the model parameters were fitted. It showed that, model fitting effect was good, and could be used to describe microbial reaction kinetics characteristics in reservoir porous media. Model was built on the microbial enhanced recovery experiment by commercial software, and input parameters were from relative permeability curve and experimental results. Parameter sensitivity analysis was made. Also, fitted computation and experimental results, verified the effectiveness of the model and parameters.Through above research, obtained the microbial oil recovery numerical simulation parameters, which were analyzed evaluated and validated. Thus the system of microbial oil recovery numerical simulation parameters’ acquisition, analysis, evaluation and validation was established. This paper further perfected the meor numerical simulation research, mutual complement and perfect of the numerical simulation and physical simulation experiment in meor simulation technology, improved the applicability and effectiveness of meor simulation technology, and promoted the optimization design of site construction plan.