The corrosion process of p-110 steel in stimulation fluids used in the oil industry
ABSTRACT: The use of chelating agents in the oil well stimulation processes has been proposed as an alternative to the acid treatment when the formations damage do not allow the usage of strong chemical attack. However, this procedure can arouse the corrosion of the steel used in the infrastructure...
- Autores:
-
Calderón Gutiérrez, Jorge Andrés
Bonilla Muñetones, Gloria Fernanda
Carreño, Javier Alejandro
- Tipo de recurso:
- Article of investigation
- Fecha de publicación:
- 2014
- Institución:
- Universidad de Antioquia
- Repositorio:
- Repositorio UdeA
- Idioma:
- eng
- OAI Identifier:
- oai:bibliotecadigital.udea.edu.co:10495/36319
- Acceso en línea:
- https://hdl.handle.net/10495/36319
http://www.scielo.org.co/pdf/ctyf/v5n4/v5n4a03.pdf
- Palabra clave:
- Ácido Edético
Edetic Acid
Recursos petroleros
Petroleum resources
Corrosión
Corrosion
Electrochemical techniques
Metal dissolution
http://vocabularies.unesco.org/thesaurus/concept14587
http://vocabularies.unesco.org/thesaurus/concept5010
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-sa/2.5/co/
| Summary: | ABSTRACT: The use of chelating agents in the oil well stimulation processes has been proposed as an alternative to the acid treatment when the formations damage do not allow the usage of strong chemical attack. However, this procedure can arouse the corrosion of the steel used in the infrastructure of the oil production. In this study, the corrosion kinetics of the P-110 steel in ethylenediaminetetraacetic acid (EDTA) based fluids is assessed under different conditions of evaluation. Linear polarization was performed in different hydrodynamic regimes and at different temperatures, in order to evaluate the kinetic of steel corrosion. The working electrolyte solution comprises 10% disodium EDTA and 20% tetrasodium EDTA. The increase of temperature from 25 to 80°C in both electrolytes increments the corrosion rate of steel in at least one order of magnitude; particularly in EDTA-Na2 solutions. Corrosion rates of 0.29x101 and 1.67x102 mm·y-1 were measured at 25 and 80°C, respectively. The hydrodynamic regime plays an important role in the corrosion of steel only in the disodium solution, where corrosion rates were increased at higher rotation speeds of the electrode. The cathodic depolarization effect is more important in the EDTA-Na2 than in the EDTA-Na4 solution, making it more corrosive. |
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