Science & Technology Review >

2015 , Vol. 33 >Issue 9: 50 - 53

DOI: https://doi.org/10.3981/j.issn.1000-7857.2015.09.008

Articles

Experimental evaluation of the microbial oil displacement in Longhupao oilfield

  • BI Yongqiang ,
  • YI Lina ,
  • QI Yibin ,
  • WANG Tianyuan ,
  • HUANG Lixin ,
  • YU Li
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  • 1. Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang 065007, China;
    2. School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Langfang Branch of Research Institute of Petroleum Exploration and Development, Langfang 065007, China

Received date: 2015-02-09

  Revised date: 2015-03-18

  Online published: 2015-05-15

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Abstract

In order to apply the technology of the microbial enhanced oil recovery in the Longhupao oilfield of Daqing, a series of experiments are conducted in our laboratory. Two strains of microbes are considered in the experiment. The endogenous microbe DH8 is screened from the Longhupao oilfield formation water, identified as the Geobacillusstearothermophilus; the inoculating microbe SL21 is selected from the strain library, identified as the Bacillus licheniformis. Their emulsification property, degradation ability and oil displacement efficiency are studied. It is shown that the specific capillary numbers of the DH8 and the SL21 are 0.0239 s/m and 0.0332 s/m, respectively; the viscosity reductions of the oil are 19.02% and 26.08% after the applications of the DH8 and the SL21. The linear Alkanes in the C13~C27 are mainly degraded by the DH8, and the linear Alkanes in the C19~C37 are mainly degraded by the SL21, but the short-chain n-alkanes before the C13 are both increased by 5.33% and 11.00% after the applications of the fDH8 and SL21. The physical flooding simulation experiments show that the oil displacement efficiency of the SL21 and the DH8 are 7.11% and 5.5%, respectively. Therefore, the oil displacment performance of the SL21 is better than that of the DH8.

Key words： microbial enhanced oil recovery; performance evaluation; gas chromatography; physical simulation experiment

Cite this article

BI Yongqiang , YI Lina , QI Yibin , WANG Tianyuan , HUANG Lixin , YU Li . Experimental evaluation of the microbial oil displacement in Longhupao oilfield[J]. Science & Technology Review, 2015 , 33(9) : 50 -53 . DOI: 10.3981/j.issn.1000-7857.2015.09.008

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