1070-4272/04/7708-1292 C 2004 MAIK [Nauka/Interperiodica]
Russian Journal of Applied Chemistry, Vol. 77, No. 8, 2004, pp. 1292!1300. Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004,
Original Russian Text Copyright + 2004 by Moiseeva.
AND CORROSION PROTECTION OF METALS
Finding an Effective Way to Inhibit Carbon Dioxide Corrosion
of Ferrous Metals in Oil-and-Gas Production Media
L. S. Moiseeva
Scientific-Engineering Center of Lukoil Company, Moscow, Russia
Received December 22, 2003; in final form, June 2004
Abstract-Main ways to control the carbon dioxide corrosion, type of inhibitors employed, reasons for
choice of the inhibitors, and various factors determining the efficiency of inhibitors of different types in
carbon dioxide oil-and-gas production media are considered.
When solving problems related to carbon dioxide
corrosion, which are encountered in oil and gas fields,
it is particularly important to determine the most ef-
fective protective method [1, 2]. Inhibition is an ef-
ficient and, in many cases, rational protection tech-
nique . Previously, mechanisms of carbon diox-
ide corrosion in single- and double-phase oil-and-gas
production media at various pH values have been
analyzed [6, 7].
The aim of this study was to continue investiga-
tions aimed to choose the most promising ways to
control the carbon dioxide corrosion and to consider
main types of inhibitors and factors determining their
An analysis of the mechanism of action of CO
revealed its main specific features (Scheme 1). Pri-
marily, the accelerating effect of CO
is due to en-
Effect of CO
on the corrosion of steel
Content of depolarizer in the surface layer (s.l.) and is solution (sol).