Volume 36 Issue 5
Oct.  2019
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WANG Lan, TAO Huaizhi, YAO Shiyu. Study on Dispersion Behavior and Mechanisms of Carbon Nanodot Materials[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(5): 542-547. doi: 10.3969/j.issn.1001-5620.2019.05.003
Citation: WANG Lan, TAO Huaizhi, YAO Shiyu. Study on Dispersion Behavior and Mechanisms of Carbon Nanodot Materials[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(5): 542-547. doi: 10.3969/j.issn.1001-5620.2019.05.003
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Study on Dispersion Behavior and Mechanisms of Carbon Nanodot Materials

doi: 10.3969/j.issn.1001-5620.2019.05.003

  • 1. Oil & Gas Field Applied Chemistry Key Laboratory of Sichuan Province, Guanghan, Sichuan 618300;

  • 2. Drilling & Production Technology Research Institute of CCDC, Guanghan, Sichuan 618300;

  • 3. College of Physics, Jilin University, Changchun, Jilin 130012

  • Received Date: 2019-06-15
  • Publish Date: 2019-10-30
    Abstract
  • Shales encountered in drilling operation have very low permeability and very small pore throats which are easy to result in lost circulation and instability of wellbore. Nanometer materials have in recent years been widely used to make nanometer plugging agents which are able to plug the pore throats in shales and to prevent liquid phase from entering into the shales, thereby maintaining the stability of borehole wall. A new nanodot material has been developed with powdered citric acid and ethylene diamine through hydrothermal synthesis. Several ways of dispersion were used to optimize the dispersion of the nanodot material in water. The mechanisms of the dispersion of the nanodot material was studied. Laboratory experimental results showed that the nanodot material disperses very well in alkaline water, simple mechanical agitation and ultrasonic wave can make the nanodot material dispersed completely in water. In bentonite slurry the nanodot material also showed good dispersibility. This study has provided a theoretical and experimental base for the nanodot material to be used as plugging agent in shale gas drilling operation.

     

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