Comparison of microbial community compositions of injection and production well samples in a long-term water-flooded petroleum reservoir.

ABSTRACT: Water flooding plays an important role in recovering oil from depleted petroleum reservoirs. Exactly how the microbial communities of production wells are affected by microorganisms introduced with injected water has previously not been adequately studied. Using denaturing gradient gel electrophoresis (DGGE) approach and 16S rRNA gene clone library analysis, the comparison of microbial communities is carried out between one injection water and two production waters collected from a working block of the water-flooded Gudao petroleum reservoir located in the Yellow River Delta. DGGE fingerprints showed that the similarities of the bacterial communities between the injection water and production waters were lower than between the two production waters. It was also observed that the archaeal c

SUBMITTER: Ren HY 

PROVIDER: S-EPMC3156122 | biostudies-literature | 2011

REPOSITORIES: biostudies-literature