Analysis on the Microbial Diversity of Qinghai High Salt Content Oil Reservoirs

Cultivation method and sequencing analysis of 16S rRNA genes were applied to analyze the microbial diversity of Qinghai oil reservoirs. The results of culture demonstrated that there existed a phylogenetically diverse and complex microbial community in Qinghai oil field formation. 10% randomly selected clones were analyzed by DNA sequencing. Sequencing of representative clones of each phylotype showed that the community structure was mainly constituted by Marinobacterium and Psudomonas, and there were some kinds of uncultured microbe existed in the sample. The results of this study provide further insight into the composition of microbial communities of high salt content oil reservoirs.