Almalikee, H.S. , Almayyahi, H.K. and Al-Jafar, M.K. 2020. Karst feature in Mishrif Reservoir and effect on drilling and production in Zubair oil field, Southern Iraq. Journal of Petroleum Research and Studies. 10, 4 (Dec. 2020), 19-32. DOI:https://doi.org/10.52716/jprs.v10i4.365.