Research on Detecting to Bacterial Concentration by Cultivation-Microscopy Method in the Oil Field Sewage

Bacterial concentration is detected by the cultivation-microscopy method and the serial dilution method in the different oil field sewage. The results indicate that the results are the same when the bacterial concentration in the clear water, simulated water and waterflooded sewage were detected by the cultivation- microscopy method and the serial dilution method. The order of magnitude are the same and quotient are different when the bacterial concentration in the polymer- flooded sewage were detected by those. The bacterial concentration by the cultivation-microscopy method detected is more than by the serial dilution method detected when the waterflooded sewage and the polymer-flooded sewage were joined the biocide. They are used to detect the bacterial concentration in the different concentration scop of polymers, the results are the same in the concentration scop of polyacrylamide under 100mg/L, while the results are very different in the concentration scop of polyacrylamide above 200mg/L.