scholarly journals DETERMINATION OF CORROSION INHIBITOR CRITERIA FOR TYPE III/IIIA TANKS DURING SALT DISSOLUTION OPERATIONS SUMMARY DOCUMENT

2009 ◽  
Author(s):  
J. Mickalonis ◽  
B. Wiersma ◽  
B. Garcia-Diaz
Keyword(s):  
Corrosion Inhibitor ◽  
Type Iii ◽  
Salt Dissolution

Determination of IMC-80BH Corrosion Inhibitor Concentration and Practical Application in Gas Field

2011 ◽  
Vol 284-286 ◽  
pp. 1049-1052 ◽  
Author(s):  
Zheng Fan ◽  
Wen Hong Li ◽  
Dong Li ◽  
Cun Ju Liu ◽  
Yu Luo ◽  
...  
Keyword(s):  
Corrosion Inhibitor ◽  
Inhibitor Concentration ◽  
Practical Application ◽  
Buffer Solution ◽  
Gas Field ◽  
Gas Well ◽  
Standard Curve ◽  
Oil Gas ◽  
Better Than

The ability of IMC-80BH corrosion inhibitor is proven to be excellent in earlier indoor static and flowing evaluation and it is worthwhile to determine the inhibitor concentration to maintain the optimum concentration for the sake of effective gas well protection. A improved concentration determination method is aboratively investigated. The maximum absorption wavelengths, buffer solution, reaction time and additive dosage of chromogenic reagent XD are detected successively and the standard curve of liquid phase behaves better than oil gas. The sample verification demonstrates that such determination measurement is reliable and precise. The four representative gas wells including G8-7, S59, W26-5 and G49-6 in service are also determined. The determination result offered substantial basis to analyze and select appropriate inhibitor injection program and dosage.

Evaluation of corrosion inhibitors in acid medium

2015 ◽  
Vol 62 (4) ◽  
pp. 241-245
Author(s):  
Fernando Benedicto Mainier ◽  
Raphaela de Melo Baêsso e Silva
Keyword(s):  
Carbon Steel ◽  
Corrosion Inhibitor ◽  
Acid Medium ◽  
Design Methodology ◽  
Corrosion Inhibitors ◽  
Experimental Conditions ◽  
Content Type ◽  
Steel Pipes ◽  
Kinetics Of

Purpose – The purpose of this paper is to evaluate the corrosion inhibitor performance in acid medium through the determination of Fe2+ ions present based on reaction kinetics of steel with the acid. The use of corrosion inhibitors has been an excellent technique for protecting carbon steel pipes acidizing operations in oil wells. The inhibitor forms a chemical barrier on the metal surface that prevents or reduces attack by the acidic media. Design/methodology/approach – The experimental study provides a methodology to evaluate the performance of corrosion inhibitors in an acid medium, preferentially of concentrated hydrochloric acid. The process consists essentially of total immersion coupons of carbon steel, with continuous stirring, controlled temperature and quantitative determinations of iron ions from the dissolution of steel. The additions of commercial corrosion inhibitor base of ethoxylated amines of high molecular weight in an acid medium showed excellent performance at a temperature ranging from 25 to 45°C. Findings – This paper presents the mechanisms of protection, performance graphs and calculations of the activation energies of the addition of corrosion inhibitors in an acidic medium. Originality/value – The originality of this essay is to evaluate and correlate the performance of corrosion inhibitors with the activation energy in experimental conditions.

scholarly journals Quantitative Determination of Antibodies to Type III Group B Streptococcal Polysaccharide

1996 ◽  
Vol 173 (1) ◽  
pp. 142-150 ◽  
Author(s):  
Hilde-Kari Guttormsen ◽  
Carol J. Baker ◽  
Morven S. Edwards ◽  
Lawrence C. Paoletti ◽  
Dennis L. Kasper
Keyword(s):  
Quantitative Determination ◽  
Type Iii ◽  
Streptococcal Polysaccharide ◽  
Group B
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