Joshua Emeka Ozor, Oludayo Sofoluwe, Dazok Donald Jambol. A Holistic Engineering Model for Managing Non-Productive Time (NPT) in Onshore Drilling: Prevention, Response, and Recovery. Int J Sci Res Civil Engg [Internet]. 2023 May 11 [cited 2026 Mar. 18];7(3):117-30. Available from: https://ijsrce.com/index.php/home/article/view/IJSRCE237315