Protection of Mild Steel Against Sulfides Corrosion in Petro

The aggressive properties of the media encountered when drilling for
oil derive from the fact that they contain an abundance of mineralized
water, as well as hydrogen sulphide and carbon dioxide. Particularly
vulnerable to corrosion and installation of old deposits, where highly
mineralized water or sometimes even sea water, is pumped into the bed
so as to increase the oil yield, and where acid treatment is also carried
out, the injection of such water into the bed creates favourable conditions
for the development of microbiological processes promoting the life
activity of sulphate-reducing bacteria and contributing to the appearance
of hydrogen sulphide in the system.
The mild steel is used as an essential parts in the manufacturing of
installation used in the petroleum industry. For this reason, the aim of this
paper was planed to study the corrosion and corrosion inhibition of mild
steel in 3 % sodium chloride aqueous solution at PH of 3 in absence and
in presence of different concentration of H2S at temperatures of
25,40,and 65 ºC.