M., B.; OMER, M.; BLAHSSEN, S. Ultra mud system Optimizes Drilling Efficiency in Sirte basin(Libya). Asian Journal of Engineering and Technology, [S. l.], v. 3, n. 2, 2015. Disponível em: https://ajouronline.com/index.php/AJET/article/view/2389. Acesso em: 22 may. 2022.