Volume 39 Issue 5
Jan.  2023
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2022  >  39(5): 629-637
GUO Xing, SUN Xiao, MU Jingfu, et al.Proppant Migration in Fracture Fractured with Supercritical CO2 Fracturing Fluid[J]. Drilling Fluid & Completion Fluid，2022, 39（5）：629-637 doi: 10.12358/j.issn.1001-5620.2022.05.015
Citation: GUO Xing, SUN Xiao, MU Jingfu, et al.Proppant Migration in Fracture Fractured with Supercritical CO2 Fracturing Fluid[J]. Drilling Fluid & Completion Fluid，2022, 39（5）：629-637 doi: 10.12358/j.issn.1001-5620.2022.05.015
shu

Proppant Migration in Fracture Fractured with Supercritical CO2 Fracturing Fluid

doi: 10.12358/j.issn.1001-5620.2022.05.015
  • 1.

    Research Institute of Shaanxi Yanchang Petroleum (Group) Company Limited, Xi’an, Shaanxi 710065

  • 2.

    Shaanxi Key Laboratory of Carbon Dioxide Sequestration and Enhanced Oil Recovery, Xi’an, Shaanxi 710065

  • 3.

    Peking University, College of Engineering, Beijing 100871

  • Received Date: 2022-06-01
  • Rev Recd Date: 2022-07-05
  • Publish Date: 2023-01-10
    Abstract
  • In order to optimize the supercritical CO2 fracturing technology and construction parameters, considering the interaction between proppant particles in supercritical CO2 Fracturing Fluid, the multiphase particle grid method in Euler Lagrange method is used to establish the mathematical model of CO2 fracturing proppant migration. The accuracy of the model is verified by indoor hydraulic fracturing proppant migration model experiment, and the supercritical CO2 fracturing proppant migration law is calculated and analyzed. Research shows: Due to the low viscosity of non tackifying CO2, the sand carrying effect is very poor, and the optimization of other parameters has little effect on the sand carrying effect; When the viscosity of CO2 increases to 2.5 mPa·s, the sand carrying effect can be effectively improved. The combination of ultra-light proppant and fine particles has little difference between the sand carrying effect and the viscosity increasing to 10 mPa·s; Optimizing the density ratio of proppant to size can improve the sand carrying effect more obviously; Increasing the displacement can improve the sand carrying effect, but if the displacement continues to increase, the sand carrying effect changes little; Fluid filtration has little effect on CO2 sand-carrying effect. This study provides technical support for solving the problem of poor sand carrying performance of CO2, and has important guiding significance for supercritical CO2 fracturing design optimization and field construction.

     

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