AYALA, D.; TORRES, H.; VALENCIA, R.; LOAIZA, M. Impact of non-Productive Time (NPT) in drilling operation and data analysis by applying the Chi Square Test. Fuentes, el reventón energético, [S. l.], v. 14, n. 2, p. 5–18, 2017. DOI: 10.18273/revfue.v14n2-2016001. Disponível em: https://revistas.uis.edu.co/index.php/revistafuentes/article/view/6065. Acesso em: 24 aug. 2024.