Volume 40 Issue 4
Jul.  2023
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2023  >  40(4): 535-539
CHANG Qing, ZOU Chunfeng, CAI Jingchao, et al.Research and application of high-efficiency bactericide for guar gum fracturing fluid[J]. Drilling Fluid & Completion Fluid，2023, 40（4）：535-539 doi: 10.12358/j.issn.1001-5620.2023.04.017
Citation: CHANG Qing, ZOU Chunfeng, CAI Jingchao, et al.Research and application of high-efficiency bactericide for guar gum fracturing fluid[J]. Drilling Fluid & Completion Fluid，2023, 40（4）：535-539 doi: 10.12358/j.issn.1001-5620.2023.04.017
shu

Research and Application of High-efficiency Bactericide for Guar Gum Fracturing Fluid

doi: 10.12358/j.issn.1001-5620.2023.04.017
  • 1.

    Engineer Technology Research Institute, BHDC, Tianjin 300280

  • 2.

    Downhole Technology Service Company, BHDC, Tianjin 300280

  • 3.

    Science and Technology Information Department, CPTEC, Beijing 100007

  • Received Date: 2023-02-01
  • Accepted Date: 2023-06-05
  • Rev Recd Date: 2023-05-15
  • Publish Date: 2023-07-30
    Abstract
  • In response to the problem of guar gum fracturing fluid being affected by bacteria and other microorganisms during the summer in Daqing area, which leads to deterioration, and hydration, and affects the success rate of construction, the microbial diversity sequencing technology was used to analyze the bacterial species of guar gum fracturing fluid in three reservoir tanks constructed at the same time in different blocks, and the Quaternary ammonium cation composite polylysine high-efficiency bactericide was developed. The bactericidal effect of the new compound bactericide on fracturing fluid in Daqing area was evaluated by plate counting method. The experimental results showed that the newly developed compound bactericide could make the sterilizing rate reach 100% in 2h. A total of 352 sections were applied in 8 wells on site, and the viscosity retention rate of guar gum fracturing fluid was still 90% after 72 hours. This bactericide effectively solves the technical problem of rapid deterioration of on-site guar gum fracturing fluids, providing important performance guarantee for smooth fracturing construction, and has important application prospects in plant gum fracturing fluids.

     

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