Ahmed Mohammed, K. and A. Al-Haleem, A. 2019. A Comparative Study of Pressure Losses and Hole Cleaning Efficiency of Water and Polymer solutions in Horizontal Wells. Iraqi Journal of Chemical and Petroleum Engineering. 20, 4 (Dec. 2019), 35–40. DOI:https://doi.org/10.31699/IJCPE.2019.4.6.