Modelagem e simulação numérica da ciclagem de válvulas de completação inteligente incrustadas com depósitos de carbonato de cálcio

Abstract

Intelligent well completion is a technology that enables remote production control, optimizing extraction and reducing operational costs. However, the formation of calcium carbonate scale (ICC) in flow control valves (ICVs) can compromise their operation, hindering valve cycling and requiring costly interventions. This study developed a novel methodology to model and numerically simulate ICC removal during valve cycling using the Discrete Element Method (DEM). Verification and calibration tests were conducted to ensure the consistency of the numerical model parameters. Additionally, a representative ICV geometry was modeled, incorporating simplifications to facilitate computational simulation. The results demonstrated that, for specific particle adhesion forces, the actuator force was sufficient to remove the scale and ensure proper valve operation. However, for high adhesion forces, scale removal was partial or nonexistent. Scratch tests provided preliminary insights into the shear resistance of the scale, highlighting the need to refine adhesion models used in the DEM approach. Future research should focus on incorporating more sophisticated adhesion models, conducting complementary experimental studies to calibrate adhesion parameters, and evaluating the influence of environmental factors such as pressure, temperature, and fluid presence. The findings contribute to a better understanding of the phenomenon and the improvement of ICC mitigation strategies in ICVs.