Studying Corrosion Electrochemical Mechanism in Tube Line and Gas Wells

Abstract

-High cost of corrosion is the very most important issue in country corrosion engineering and it is necessary to reduce this cost in petrochemical, gas, oil industry of country. Corrosion in oil and gas well have electrochemical mechanism when this system reach to below dew point, this moisture transform to liquid and there are drops on tube wall. Water has electrolyte role in electrochemical reaction. Water is not corrosion. When acidic gases such as CO 2 , H 2 S solvent in water it's create acidic space that cause intensive corrosion near steel. Sometimes oxygen in oil well is corrosion gasses but in the gas wells this is not this problem. H 2 S gas resources can be sedentary in earth layers, a cillary product of producing gas, oil or bacteria activity.