Placement Using Viscosified Non Newtonian Scale Inhibitor Slugs: The Effect of Shear-Thinning

Sorbie, Kenneth S. (Heriot-Watt University) | Mackay, Eric James (Heriot-Watt University) | Collins, Ian Ralph (BP Exploration) | Wat, Rex Man Shing (Statoil ASA)


For Newtonian viscous fluid injection into layered linear and radial systems with no crossflow, we concluded: (i) Viscous fluid injection into a layered linear or radial no crossflow system causes diversion of fluid to the low k layer; (ii) This diversion is much larger in a linear system than in a radial system where it is not very significant; (iii) Implications from these points are: (a) results from nocrossflow linear systems (such as parallel core experiments) are actively misleading in terms of radial placement; and (b) we should use modelling to examine placement - using data from 1D core flood experiments to supply parameters (e.g. on effective viscosities etc.) Non-Newtonian Fluids in Porous Media In situ shear rate: The study of the flow of non-Newtonian fluids through porous media has a long history owing to its potential importance in enhanced oil recovery (EOR) processes such as polymer and surfactant flooding