Abstract
Slurries made from petroleum coke (petcoke) particles in water have the potential be a useful energy source. We studied the interactions between various additives and the petcoke and the effects on the slurry rheology. Adsorption and rheology studies with polyvinylalcohol, a partially hydrophilic polymer, showed that the polymer reduced viscosity only when adsorbed to the petcoke surface. Adding xanthan gum causes shear-thinning behavior, which increases storage stability, so the combination of these two additives may yield optimal slurry characteristics.
Keywords:
dispersion,
particle,
pva,
xanthan gum,
concentration,
rheological modifier,
stability,
petcoke particle,
upstream oil & gas,
viscosity
Subjects:
Drilling Fluids and Materials
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2014. International Society of Offshore and Polar Engineers
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