Corrosion of low carbon steel by microorganisms from the ‘pigging’ operation debris in water injection pipelines
- Resource Type
- Authors
- Magdalena Sztyler; Iwona B. Beech; Jemimah Doma; Omar Rosas; Régine Basséguy; Claudia Cote
- Source
- Bioelectrochemistry
Bioelectrochemistry, Elsevier, 2014, 97, pp.97-109. ⟨10.1016/j.bioelechem.2013.11.001⟩
- Subject
- Carbon steel
Anaerobic biocorrosion
Water injection (oil production)
Biophysics
Artificial seawater
02 engineering and technology
engineering.material
Bacterial Physiological Phenomena
Corrosion
03 medical and health sciences
Pigging
Electrochemistry
Génie chimique
Seawater
Physical and Theoretical Chemistry
Sulfate-reducing bacteria
Génie des procédés
Pigging debris
0303 health sciences
Bacteria
Denaturing Gradient Gel Electrophoresis
030306 microbiology
Metallurgy
General Medicine
[CHIM.MATE]Chemical Sciences/Material chemistry
021001 nanoscience & nanotechnology
Gel electrophoresis
Produced water
Carbon
6. Clean water
Steel
13. Climate action
Biofilms
Dielectric Spectroscopy
Low carbon steel
engineering
Environmental science
0210 nano-technology
Electrochemical impedance spectroscopy
- Language
- English
- ISSN
- 1567-5394
International audience; Present in all environments, microorganisms develop biofilms adjacent to the metallic structures creating corrosion conditions which may cause production failures that are of great economic impact to the industry. The most common practice in the oil and gas industry to annihilate these biofilms is the mechanical cleaning known as “pigging”. In the present work, microorganisms from the “pigging” operation debris are tested biologically and electrochemically to analyse their effect on the corrosion of carbon steel. Results in the presence of bacteria display the formation of black corrosion products allegedly FeS and a sudden increase (more than 400 mV) of the corrosion potential of electrode immersed in artificial seawater or in field water (produced water mixed with aquifer seawater). Impedance tests provided information about the mechanisms of the interface carbon steel/bacteria depending on the medium used: mass transfer limitation in artificial seawater was observed whereas that in field water was only charge transfer phenomenon. Denaturing Gradient Gel Electrophoresis (DGGE) results proved that bacterial diversity decreased when cultivating the debris in the media used and suggested that the bacteria involved in the whole set of results are mainly sulphate reducing bacteria (SRB) and some other bacteria that make part of the taxonomic order Clostridiales.