西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (5): 117-120.DOI: 10.3863/j.issn.1674-5086.2009.05.025

• 石油与天然气工程 • Previous Articles     Next Articles

EFFECTS OF CELL SURFACE-HYDROPHOBICITIES ON MIGRATION AND ADHENSION OF OIL RECOVERING MICROBE

LIU Yang1 LI Wei1 SHAN Hou-fei2 WANG Rui1   

  1. 1.Exploration and Development Institute，Daqing Oilfield Company Limited，CNPC，Daqing Heilongjiang 163712，China；2.Life Science College of Heilongjiang University，Harbin Heilongjiang 150080，China
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-10-20 Published:2009-10-20

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Abstract: Microorganisms in oil reservoir can enhance oil recovery by moving to crude oil and adhensing to the surface of rocks.Cell-surface hydrophobicity plays an important role in the course of movement and adhension.Five strains，named DQ11-2，1507，HX，QF，CU，which can grow with oil as the sole carbon source，are isolated and purified from the produced liquids in oilfield.The method of microorganism adhering to hydrocarbon （MATH） is used to study the bacteria Cell-surface hydrophobicity of the strains and environmental influence factors.The result shows hydrophobicity changes with the difference of cultivation time，carbon source，temperature and pH value.The cell-surface hydrophobicity of bacteria is increased by the addition of certain amount of Lipopeptide Biosurfactant.

Key words: MEOR, surface-hydrophobicities, adhension

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