Reservoir-engineering analysis of microbial enhanced oil recovery

Generally, microbial enhanced oil recovery (MEOR) recovers less of the rema ining oil in place than other chemical EOR processes, both in the laborator y and the field. Efforts to explain this difference are limited by the lack of quantitative measures of microbial performance (e.g., reaction rates, s toichiometry, and required product concentrations). However, it is possible to demonstrate quantitative relationships between microbial performance, r eservoir characteristics, and operating conditions (e.g., well spacing, inj ection rates, and residual-oil saturation).