Corrosion Behavior of Drilling Casing in Matrix Acidizing Operations Using Dilute Magnetized HCl Solutions

Stimulation of hydrocarbon wells with matrix acidizing operation is among the most common operations to stimulate the formation, remove the skin, and improve the productivity index. However, equipment corrosion, including casings, is one of the most critical concerns. In the present paper, the influence of the magnetic field on the corrosion behavior of drilling casing in ۱.۵ M (۵ wt %) HCl was investigated in various conditions using potentiodynamic polarization (PDP) and weight loss (WL) measurements. The Taguchi experimental design (L-۱۸ array) was utilized to model the impacts of magnetic field intensity, elapsed time, magnetization time, and temperature on the corrosion rate. The experimental results showed that the passing of acid through a magnetic field reduced the corrosion rate of N-۸۰ carbon steel in HCl by up to ۹۶%. Consequently, magnetized acid could reduce the effects of corrosion on matrix acidizing operations as a green corrosion inhibitor.

کلیدواژه ها:

Drilling Casing ، Matrix acidizing ، corrosion rate