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A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application

The main threat to the oil and gas pipeline is due to internal corrosion from corrosive acid gases and microbes. The integrity of offshore pipeline is dependent on successful mitigation of carbon dioxide (CO2) corrosion and microbiologically influenced corrosion (MIC) through effective corrosion inh...

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Main Author:	Abdul Hamid Albakri, Mohammad Faris Al Hanis
Format:	Final Year Project
Language:	English
Published:	Universiti Teknologi Petronas 2013
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://utpedia.utp.edu.my/10626/1/FYP2_Dissertation%20Report_12662_Mohammad%20Faris%20Al%20Hanis.pdf http://utpedia.utp.edu.my/10626/
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spelling	my-utp-utpedia.106262017-01-25T09:38:58Z http://utpedia.utp.edu.my/10626/ A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application Abdul Hamid Albakri, Mohammad Faris Al Hanis TJ Mechanical engineering and machinery The main threat to the oil and gas pipeline is due to internal corrosion from corrosive acid gases and microbes. The integrity of offshore pipeline is dependent on successful mitigation of carbon dioxide (CO2) corrosion and microbiologically influenced corrosion (MIC) through effective corrosion inhibitor and biocide treatment. Possible reactions between corrosion inhibitor (CI) and biocide can reduce the efficiency and performance of both chemicals. This can lead to inadequate corrosion protection of the pipeline. This research is to study the chemical compatibility between CI and biocide focusing on the performance of the CI. Corrosion simulation was based on 3% NaCl solution saturated with CO2 at 1 bar and 60oC, with fixed biocide concentration of 500ppm and various CI dosages. The compatibility was studied based on comparison between three injection methods and the individual effect of each chemical. Corrosion measurement was performed in three-electrode glass cell testing by using Linear Polarization Resistance (LPR). Surface film morphology was studied with Scanning Electron Microscope (SEM) and crystallinity structure with -ray diffraction (XRD). 25ppm CI reduced corrosion rate from 1.4mm/yr to 0.04mm/yr with 97% efficiency. The presence of biocide reduced the performance from 2.5% to 25% significantly depending on the injection method. Thus, dosage of CI more than 500ppm was required to increase inhibition efficiency. By using SEM, the existence of CI layer has been observed by no detection of general corrosion on the inhibited surface. The XRD patterns of inhibited surface shows the presence of iron peaks only, the peaks due to oxide of iron were found to be absent. In conclusion, biocide was found to affect the performance of CI efficiency. Universiti Teknologi Petronas 2013-05 Final Year Project NonPeerReviewed application/pdf en http://utpedia.utp.edu.my/10626/1/FYP2_Dissertation%20Report_12662_Mohammad%20Faris%20Al%20Hanis.pdf Abdul Hamid Albakri, Mohammad Faris Al Hanis (2013) A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application. Universiti Teknologi Petronas. (Unpublished)
institution	Universiti Teknologi Petronas
building	UTP Resource Centre
collection	Institutional Repository
continent	Asia
country	Malaysia
content_provider	Universiti Teknologi Petronas
content_source	UTP Electronic and Digitized Intellectual Asset
url_provider	http://utpedia.utp.edu.my/
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Abdul Hamid Albakri, Mohammad Faris Al Hanis A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application
description	The main threat to the oil and gas pipeline is due to internal corrosion from corrosive acid gases and microbes. The integrity of offshore pipeline is dependent on successful mitigation of carbon dioxide (CO2) corrosion and microbiologically influenced corrosion (MIC) through effective corrosion inhibitor and biocide treatment. Possible reactions between corrosion inhibitor (CI) and biocide can reduce the efficiency and performance of both chemicals. This can lead to inadequate corrosion protection of the pipeline. This research is to study the chemical compatibility between CI and biocide focusing on the performance of the CI. Corrosion simulation was based on 3% NaCl solution saturated with CO2 at 1 bar and 60oC, with fixed biocide concentration of 500ppm and various CI dosages. The compatibility was studied based on comparison between three injection methods and the individual effect of each chemical. Corrosion measurement was performed in three-electrode glass cell testing by using Linear Polarization Resistance (LPR). Surface film morphology was studied with Scanning Electron Microscope (SEM) and crystallinity structure with -ray diffraction (XRD). 25ppm CI reduced corrosion rate from 1.4mm/yr to 0.04mm/yr with 97% efficiency. The presence of biocide reduced the performance from 2.5% to 25% significantly depending on the injection method. Thus, dosage of CI more than 500ppm was required to increase inhibition efficiency. By using SEM, the existence of CI layer has been observed by no detection of general corrosion on the inhibited surface. The XRD patterns of inhibited surface shows the presence of iron peaks only, the peaks due to oxide of iron were found to be absent. In conclusion, biocide was found to affect the performance of CI efficiency.
format	Final Year Project
author	Abdul Hamid Albakri, Mohammad Faris Al Hanis
author_facet	Abdul Hamid Albakri, Mohammad Faris Al Hanis
author_sort	Abdul Hamid Albakri, Mohammad Faris Al Hanis
title	A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application
title_short	A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application
title_full	A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application
title_fullStr	A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application
title_full_unstemmed	A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application
title_sort	study of chemical compatibility between corrosion inhibitor and biocide in offshore application
publisher	Universiti Teknologi Petronas
publishDate	2013
url	http://utpedia.utp.edu.my/10626/1/FYP2_Dissertation%20Report_12662_Mohammad%20Faris%20Al%20Hanis.pdf http://utpedia.utp.edu.my/10626/
_version_	1739831829778661376
score	13.211869

A Study of Chemical Compatibility between Corrosion Inhibitor and Biocide in Offshore Application

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