Boyi, George, and Godswill Amadi. “Investigation Into Local Additives As Substitute To Standard Viscosifier; Advances in Drilling Technology”. Journal of Earth Energy Engineering 12, no. 3 (October 31, 2023): 114–120. Accessed May 21, 2024. https://journal.uir.ac.id/index.php/JEEE/article/view/14166.