A.Razzaq , Ayad A.Alhaleem, and Hasan Ali Neamah. “Torque and Drag Forces Challenges in Highly Deviated Oil Well (Zubair Oil Field)”. Journal of Petroleum Research and Studies 9, no. 1 (March 3, 2019): 21-34. Accessed April 23, 2024. https://jprs.gov.iq/index.php/jprs/article/view/271.