Method for integrating the fluid dynamic, thermodynamic, and kinetic models of the calcium carbonate scale in the well completion

Abstract

Integrated method for evaluating and mitigating formation of calcium carbonate scales in oil and gas well completion systems. Pertaining to the field of oil engineering, the methodology combines computational fluid dynamics (CFD), thermodynamic and kinetic models, allowing the simulation and prediction of behavior of scales under complex operating conditions. The method has five main steps: collection of geometric and operational data; generation of velocity and pressure profiles; calculation of the crystal deposition rate; thermodynamic and kinetic simulation of the precipitation and scaling processes; and calculation of a scale index that quantifies the risk associated with each piece of equipment and completion. The methodology assists in identifying critical points, optimizing designs, and reducing operational costs, ensuring greater efficiency and reliability in offshore environments. The application includes comparing different completion configurations and defining operational parameters that minimize scale formation, promoting safer, more sustainable, and economical operations.

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