Influence of magnetic field on barium sulfate incrustation from aqueous solutions

Heliyon

Elton Franceschi¹  Fabiane S. Serpa¹  Zurel S. Costa¹  Cláudio Dariva¹  Giancarlo R. Salazar-Banda¹  Gustavo R. Borges¹  Bruno Castro²  Cristiano T. Meneses³ 

[1] NUESC/LEN/ITP, Núcleo de Estudos em Sistemas Coloidais, PEP/PBI/UNIT, Universidade Tiradentes, Av. Murilo Dantas, 300, Aracaju, SE 49032-490, Brazil;PETROBRAS/CENPES, Av. Horacio de Macedo, 950, Cidade Universitária, Rio de Janeiro, 21941-915, Rio de Janeiro (RJ), Brazil;Universidade Federal de Sergipe, Campus de Itabaiana, Av. Vereador Olimpio Grande, Itabaiana, SE CEP 49100-000, Brazil;

关键词: Chemical engineering;    Industrial engineering;    Petroleum engineering;    Thermodynamics;    Physical chemistry;    Scales;   

DOI  :  

来源: DOAJ

【 摘 要 】

The formation of scales in the petroleum industry, such as those composed of calcium and barium sulfates, may reduce productivity since these sediments can partially or totally obstruct the pipes. The mitigation of these inorganic precipitates can be accomplished by using scale inhibitors or by non-intrusive physical technologies. Here, we investigated the influence of magnetic field on the incrustations of barium sulfate by analyzing the concentration of barium and sulfate ions, the solution flow rate, the capillary tube geometry, and the magnetic field intensity in a homemade experimental unit supported on the monitoring of the dynamic differential pressure. The results show that the saline concentration and the flow rate of the solutions and the geometry of the capillary tube have a significant influence on the dynamics of barium sulfate incrustation. The presence of the magnetic field tends to prolong the induction time of the barium sulfate precipitation. A semi-empirical model was used to describe the effect of the studied variables on the barium sulfate incrustation behavior. The X-ray diffraction data of the precipitated particles analyzed using the Rietveld method suggest that the use of the magnetic field favor the formation of more crystalline particles and with smaller crystallite size than those formed in the absence of a magnetic field. Optical and scanning electron microscopy measurements also corroborate with these findings. The results from this study suggest that magnetic fields can be of interest in practical crystallization processes of barium sulfate and successfully applied to decrease the speed of barium sulfate incrustation in pipelines.

【 授权许可】

Unknown