2014•Science Technology and EngineeringRequires access
Development and Evaluation of High-temperature Resistant Corrosion Inhibitor GC-203L for Acidizing
Zhao Wen-n
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Abstract
High-temperature resistant corrosion inhibitor GC-203L is composed of mostly quinoline quaternary ammonium salt and mannich quaternary ammonium salt,in which compound synergist also is an important ingredient.Corrosion inhibiting performance and inhibition mechanism are evaluated and studied by testing the dynamic corrosion rate of GC-203L at different temperature,different amount,different acid type and concentration.The dynamic corrosion rates of steel are 3.2 g /(m2·h) in 20%(wt) hydrochloric acid and 45.3g/(m2·h) in mud acid at150 ℃ by adding GC-203L.The results suggest that GC-203L have good corrosion inhibiting performance and the temperature tolerance is as high as 180 ℃.