Adsorção competitiva de inibidor de corrosão usado em poços de perfuração de petróleo sobre aço, esmectita e arenito

Química Nova

Ingrid A. G. A. Souza²  Denise F. S. Petri²  João C. Queiroz Neto¹ 

[1] ,Universidade de São Paulo Instituto de Química São Paulo SP ,Brasil

关键词: corrosion inhibitor;    adsorption;    acidification;   

DOI  :  10.1590/S0100-40422009000100023

来源: SciELO

【 摘 要 】

A commercial corrosion inhibitor used in petroleum production was characterized by means of infrared spectroscopy and energy dispersive spectroscopy (EDS). Predicting the adsorption behavior of corrosion inhibitor onto steel, sandstone and esmectite is the key to improve working conditions. In this study, the adsorption kinetics of inhibitor formulations in HCl 15% or in Mud Acid (HCl 13,5% and ammonium bifluoride) onto steel, sandstone and esmectite was determined by means of spectrophotometry. Kinetic parameters indicated that adsorption of inhibitor in the presence of bifluoride was favored. Moreover, the adsorption constant rate was the largest when the substrate was esmectite.

【 授权许可】

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