Quantitative Modeling Of Formation Damage On The Reservoir During Microbial Enhanced Oil Recovery

摘要

Microbial enhanced oil recovery is an inexpensive, environmentally friendly method of oil recovery, utilizing the potentials of certain microbes to significantly influence oil productionwith wide range of oil recovery mechanisms including oil mobilization, reservoir re-pressurization, permeability alteration, mobility control and a range of other exploitable recovery techniques. This study presents an investigation on the degree of damage to the reservoir as a result of microbial injection. Results from this analysis shows that for a continuous microbial injection process, the pore area of the formation reduces equivalently due to microbial plugging and or as a result of biomass accumulation in the reservoir. The prevailing effects of formation damage (skin) due to these microbes are also presented. Residual fluid flow rates and corresponding velocities were found to reduce in magnitude with deducing pore area after several days of injection.