Development and Parameter Estimation for a Multivariate Herschel-Bulkley Rheological Model of a Nanoparticle-Based Smart Drilling Fluid

Dimitrios I. Gerogiorgis, Christina Clark, Zisis Vryzas, Vassilios C. Kelessidis

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Smart drilling fluids containing Fe3O4 nanoparticles have advantages toward increasing the hydraulic efficiency of drilling operations in a variety of reservoir environments. Exploring and optimizing the rheological behavior of such new drilling fluids is critical, implying direct and significant economic savings in developing new oil and gas fields. A experimental campaign analyzing the rheology of a bentonite-based fluid produced a new multiparametric dataset, considering a wide range of realistic reservoir conditions. Non-Newtonian behaviour is confirmed by yield stress computation for all these cases. Heating and rotation induce temperature and concentration gradients at drilling depth: it is hence essential to obtain an accurate but also versatile multivariate rheological model, which will enable viscosity prediction for the analyzed and other similar drilling fluids. The enhanced Herschel-Bulkley model is developed on a multiplicative assumption, postulating and analysing candidate equations which quantify the effect of shear rate, temperature and nanoparticle concentration on drilling fluid shear stress and viscosity. Parameter estimates have been subsequently determined via systematic optimisation, using statistical metrics to quantify and compare uncertainty and predictive potential. The trivariate shear stress and viscosity models proposed are similar in form: each requires six parameters used to combine a Herschel-Bulkley yield stress expression, an Arrhenius exponential of temperature and a linear model for nanoparticle concentration.

Original languageEnglish
Pages (from-to)2405-2410
Number of pages6
JournalComputer Aided Chemical Engineering
Volume37
DOIs
Publication statusPublished - 2015

Fingerprint

Drilling fluids
Parameter estimation
Nanoparticles
Shear viscosity
Yield stress
Shear stress
Drilling
Bentonite
Rheology
Temperature
Shear deformation
Oils
Gases
Hydraulics
Viscosity
Heating
Economics
Fluids

Keywords

  • Drilling fluids
  • Hershel-Bulkley model
  • Nanoparticles
  • Parameter estimation

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Computer Science Applications

Cite this

Development and Parameter Estimation for a Multivariate Herschel-Bulkley Rheological Model of a Nanoparticle-Based Smart Drilling Fluid. / Gerogiorgis, Dimitrios I.; Clark, Christina; Vryzas, Zisis; Kelessidis, Vassilios C.

In: Computer Aided Chemical Engineering, Vol. 37, 2015, p. 2405-2410.

Research output: Contribution to journalArticle

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