Vol. 14 No. 2 (2016): Fuentes, el reventón energético
Articles

Impact of non-Productive Time (NPT) in drilling operation and data analysis by applying the Chi Square Test

Diego Ayala
Facultad de Ingeniería en Geología y Petróleos. Escuela Politécnica Nacional. PO·Box 17-01-2759. Quito.Ecuador.
Henry Torres
Facultad de Ingeniería en Geología y Petróleos. Escuela Politécnica Nacional. PO·Box 17-01-2759. Quito. Ecuador.
Raúl Valencia
Facultad de Ingeniería en Geología y Petróleos. Escuela Politécnica Nacional. PO·Box 17-01-2759. Quito. Ecuador.
Marco Loaiza
Enap-Sipetrol PO·Box 17-01-2759. Quito. Ecuador.

Published 2017-01-27

Keywords

  • Non-Productive Time,
  • Drilling Optimization,
  • Drilling problems

How to Cite

Ayala, D., Torres, H., Valencia, R., & Loaiza, M. (2017). Impact of non-Productive Time (NPT) in drilling operation and data analysis by applying the Chi Square Test. Fuentes, El reventón energético, 14(2), 5–18. https://doi.org/10.18273/revfue.v14n2-2016001

Abstract

The present study was developed aiming at distinguishing the condition of Non Productive Time NPT at drilling operations at Ecuadorian fields and recommending efforts to help decreasing Non Productive Time. The research target was collecting qualitative data from final wellbore reports, for which a classification master chart of problems called matrix was designed that organizes and solves the stuff being studied, the information was arranged according to the diameter corresponding to each section of wellbore identifying in that way the main difficulties into each section and then the cause of NPT was established by applying a technical analysis. The research was focused on obtaining the cost per hour related to NPT also, the study was complemented by adding Chi-square test in order to confirm hypothetical statements about of the relationship that could exist between the variables that cause NPT, in this way the study allows for understanding the impact of NPT through a mathematical resource.

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