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IJSTR >> Volume 1 - Issue 4, May 2012 Edition



International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616



EVALUATION OF CORROSION INHIBITORS EFFECTIVENESS IN OILFIELD PRODUCTION OPERATIONS

[Full Text]

 

AUTHOR(S)

Osokogwu, U., Oghenekaro, E.

 

KEYWORDS

Corrosion Inhibitors, Concentration, Experimental Investigation, Inhibitor efficiency.

 

ABSTRACT

It is known that corrosion is a natural process and is impossible to prevent completely. Thus we only try to control corrosion. Even though coatings and cathodic protection are often more effective, chemical inhibitors are also widely used to reduce corrosion particularly in gas wells producing CO2, H2S and water. The effectiveness of the inhibitor and compatibility with produced fluids must be tested in the laboratory. Inhibitor film efficiency depends on the inhibitor concentration and contact time with the metal surface. A compact and relatively inexpensive system called High Speed Autoclave Test (HSAT) was used with corrosive gases, such as H2S and CO2. Using this system, the effectiveness of inhibitor was evaluated and all the variables that influences corrosion rate were easily controlled in the laboratory, in order to predict field corrosion rates. Several inhibitors were evaluated, active ingredients of those inhibitors include long chain amines, amides, and imidazoline est inhibitors were tested at the concentration range of 500-10000ppm in a mixture of brine/hydrocarbon in the presence of H2S and CO2. In the experimental investigation, results showed that inhibitor D (imidazoline surfactant) was the most efficient (92%) at 1000ppm.

 

REFERENCES

[1] Dunlop, A.K., H. L. Hassel, P. R. Rhodes, ’’ Fundamental considerations in sweet gas well corrosion’’, Paper No. 46, Corrosion/83, NACE International, 1983
[2] Mc mahem, A.J., Martin,J.W and L. Harris, ‘’Effects of sand and interfacial adsorption loss on corrosion inhibitor efficiency’’, Corrosion/2005, Paper No. 05274, 2005
[3] De waard, C. U. Lotz and D. E. Millian, ’’Carbonic acid corrosion of steel’’, Corrosion 31(5), 1975
[4] Ernest W. Klechka, ’’How to predict and control sweet oil well corrosion’’, Oil and Gas Jornal, Vol. 50, P.116 – 118,151., 2001
[5] Greenwell J. T, ’’ Effect of CO2 on corrosion of pipelines’’1952
[6] G. Schmitt, C. Bosch, U. Pankoke, W. Bruckhoff, G. Siegmund, ’’ Evaluation of critical flow intensities for FILC in sour gas production’’, Paper No. 46, Corrosion/98, 1998
[7] G. Schmitt, W. Bruckhoff, K. Fassler, G. Blummel, ’’ Flow loop vs rotating probies – correlation between eexperimental results and services application’’, NACE CORROSION, Paper No. 23, 1990
[8] Gopal and Jepson W. P,, ‘’ The flow characteristics in horizontal slug flow’’, Parer presentation at 3rd international conference on multi – phase flow, 1995
[9] Horsup David , ’’ Corrosion inhibition, corrosion chemistry’’, ACS symposium series, Vol. 89, P. 316, 2007
[10] J. A. Dougherty, S. Ramachandran, B, Short, ’’ Does shear stress have an effect on corrosion in sour gas production’’, NACE CORROSION/2001, Paper. No. 1069, 2001
[11] Jones, G. L. Farrar, Sydberger , ’’ Combatting corrosion in oil and gas wells’’, Oil and Gas Journal, Vol. 50, P. 106 – 109,111,113, 1996
[12] King T, C. U. Lotz and D. E. Millians, ’’ The methodology of corrosion inhibitor development for CO2 systems’’, CORROSION, Vol. 45, Paper No. 10, 1991
[13] K. Kennedy, John L. (1993),’’ Oil and gas pipeline fundamentals’’, 2nd edition, Pennwell books, P.366, 1993
[14] Lotz C. U, and T. Sydberger , ’’ CO2 corrosion in carbon steel and 13 Cr Steel in particle Laden fluid’’, CORROSION, 44(11), 1990
[15] Margarita Kharshan, Alla Furman, ’’ Incorporating vapour corrosion inhibitors (VCI) in oil/gas pipelines’’, NACE, Paper No. 236, 2000
[16] Peabody A. W, ’’ Control of ppipeline corrosion’’, Houston T X, NACE, P.190, 1978
[17] Sydberger T, ’’ Flow dependent corrosion mechanism, damage charateristics, and control’’, British Corrosion Journal,P. 83-89, 1987
[18] S. Papavinasam, R. H. Hausler, C. I. Cruz, H. Sutano, ’’laboratory studies on flow induced localized corrosion in CO2/H2S environment, and development of test methodology’’, NACE INTERNATIONAL, Paper No. 1, 1999
[19] T. W. Hamby, ’’ Development of high pressure sour gas technology’’, CORROSION, Parper No. 8309, P. 119, 1981
[20] Videm K. and A. Dugstad, ’’ Corrosion of carbon steel in an aqueous CO2 enviroment: part 1’’, Material performance, P. 63, 1989