Rheological Behavior of Drilling Fluids Containing Hydrophobically Modified Starch for Filtrate Reduction

Fernanda Dias, Roberta Souza, Elizabete Lucas
2018 Chemistry & Chemical Technology  
1 In this work, stress-strain graphs of inverse emulsion fluids containing hydrophobically modified starch were plotted from measurements obtained with a coaxial rotating cylinder viscometer, and rheological models were applied. The Bingham model best fitted the experimental results. The correlations obtained by this model allowed calculating plastic viscosity values outside the shear rate sensitivity range of the viscometer and enabled better determination of the conditions for the fluid use.
doi:10.23939/chcht12.01.086 fatcat:lzmhxh2mz5eihacw4acvcjya3e