Content of review 1, reviewed on April 23, 2021

  1. Better to list the mud composition in the provided table with the used amounts in the lab scale.
  2. How was the NP size and surface area were measured?
  3. Do the authors have a base case to compare the NP effects with? good to have base case, it is only indicated in few figures, this should be there for rheology as well
  4. Ph in figure 11 should be listed as well

Source

    © 2021 the Reviewer.

Content of review 2, reviewed on July 01, 2021

Authors have addressed all comments and I have no further comments

Source

    © 2021 the Reviewer.

References

    Omar, M., Ahmed, M., Sattar, D. A., Adnan, A. 2022. Al2O3 and CuO nanoparticles as promising additives to improve the properties of KCl-polymer mud: An experimental investigation. The Canadian Journal of Chemical Engineering.