This paper describes the development and application of a two-phase, multi-component, multi-layer, radial mathematical model capable of simulating aqueous and non-aqueous scale inhibitor squeeze treatments. The model considers the immiscible displacement of oil and water phases along with inhibitor transport in both phases and mass transfer between phases. It can model kinetic and equilibrium adsorption and desorption from either phase. The model has been validated by comparison with analytical solutions, standard conventional single-phase squeeze calculations and multi-phase reservoir simulation calculations.

Example results are presented, along with guidelines for appropriate use of these types of calculation in the design of aqueous and non-aqueous scale inhibitor treatments in wells across a wide range of water cuts.

Keywords:
paraffin remediation, scale remediation, enhanced recovery, water management, oilfield chemistry, Production Chemistry, reservoir simulation, asphaltene remediation, Fluid Dynamics, asphaltene inhibition
Subjects:
Production Chemistry, Metallurgy and Biology, Reservoir Fluid Dynamics, Improved and Enhanced Recovery, Reservoir Simulation, Formation Evaluation & Management, Inhibition and remediation of hydrates, scale, paraffin / wax and asphaltene, Flow in porous media
Copyright 2006, Society of Petroleum Engineers
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