A K, M. S, k. J, M. M, s. G, J. A, H. M. Borehole Stability in Shale Formation: Modeling the Effects of Molecular Weight and Concentration of Polymers in the Drilling Fluids Formulation. Journal of Petroleum Research and Studies [Internet]. 2014Jun.1 [cited 2024Apr.26];5(1):260-7. Available from: https://jprs.gov.iq/index.php/jprs/article/view/143