Estudio de coeficientes reológicos de un crudo extrapesado mezclado con un biorreductor de viscosidad//Rheological coefficient Study of an extra heavy crude oil dosage with a viscosity bioreducer

Authors

  • Edgardo Jonathan Suárez Domínguez Mexican Institute of Complex Systems. Tamaulipas
  • Rigoberto Manuel Rivera Geo Estratos S.A. de CV. Tamaulipas
  • Allan Uriel Coronel Santillán Geo Estratos S.A. de CV. Tamaulipas
  • Arturo Palacio Pérez Universidad Nacional Autónoma de México. Instituto de Ingeniería. México, D.F.
  • Elena Izquierdo Kulich Universidad de la Habana. Facultad de Química. La Habana

Abstract

En este trabajo se realizó un análisis de los coeficientes de ajuste reológicos determinados a partir del comportamiento de los esfuerzos de corte en un amplio rango de gradientes de velocidad aplicados a un crudo de viscosidad mayor de 40000 cP a 25 °C. Los ensayos se llevaron a cabo para diversas temperaturas y concentraciones de un reductor de viscosidad. Se encontró que a temperaturas menores de 25 °C este crudo extrapesado tiene comportamiento No-Newtoniano de tipo pseudo-plástico, asociado a los menores esfuerzos de corte requerido. Esto último también se obtiene a bajas temperaturas pero añadiendo el biorreductor de viscosidad (BRV), mostrando su efecto al disminuir los esfuerzos cortantes requeridos para movilizar al hidrocarburo.

Palabras claves: reología de crudo, petróleo extrapesado, biorreductor de viscosidad.
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Abstract

An analysis of rheological adjustment coefficients is here presented, based on the experimental determination of the shear stress for a wide range of velocity gradients, applied to extra heavy oil crude with a viscosity up to 40000 cP at 25 °C. A series of tests were performed for various temperatures and concentration values of a viscosity reducer. It was found that at temperatures below 25 °C the crude behavior is non-Newtonian, of the shear thinning type, while at temperatures above 30 °C behavior tends to be Newtonian, associated to the lower shear stresses required. This latter behavior is achieved at low temperatures too, when adding the viscosity reducer, showing the positive effect of this additive (BRV), which decreases the shear stress required to set the oil crude in motion.

Key words: crude oil rheology, extra heavy oil, viscosity bioreducer.

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How to Cite

1.
Suárez Domínguez EJ, Manuel Rivera R, Coronel Santillán AU, Palacio Pérez A, Izquierdo Kulich E. Estudio de coeficientes reológicos de un crudo extrapesado mezclado con un biorreductor de viscosidad//Rheological coefficient Study of an extra heavy crude oil dosage with a viscosity bioreducer. Ing. Mec. [Internet]. 2015 May 1 [cited 2025 Sep. 13];18(2):87-92. Available from: https://ingenieriamecanica.cujae.edu.cu/index.php/revistaim/article/view/512

Issue

Vol. 18 No. 2 (2015): mayo-agosto

Section

Original article

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