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Enhanced Corrosion Prediction Model for Multiphase Oil and Gas Production Systems

Picture for Enhanced Corrosion Prediction Model for Multiphase Oil and Gas Production Systems
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A top-of-line corrosion (TLC) model integrated into a CO2/H2S corrosion prediction model. The TLC model determines the top of the line corrosion rate of carbon steel based on water chemistry and film-wise condensation rate. The effect of various glycols, such as Monoethylene Glycol, Diethylene glycol and Triethylene Glycol, are included.

Product Number: 51317--9419-SG
ISBN: 9419 2017 CP
Author: Hui Li
Publication Date: 2017
Industry: Gas/Liquid Pipelines
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$20.00
$20.00

In oil and gas production the potential damage to the oil and gas transportation lines caused by Top of the Line Corrosion (TLC) has become a key concern for pipeline operators given the inability of currently available prediction models to accurately capture the phase behavior and concomitant water condensation a precursor to TLC. Another concern with TLC is that continuous corrosion inhibitor application is usually not effective as TLC occurs in stratified flows where corrosion inhibitors can hardly reach corroding locations.This paper details a TLC model integrated into a CO2/H2S corrosion prediction model developed by the authors’ organization. The TLC model determines the Top of The Line corrosion rate of carbon steel based on iron concentration and film-wise condensation rate. The effect of various glycols such as Monoethylene Glycol (MEG) Diethylene glycol (DEG) and Triethylene Glycol (TEG) are included. Experimental data and field data were used for model validation and the predicted condensation rates and TLC rates demonstrated good agreement.

Keywords: corrosion rate, prediction, modeling, top of the line corrosion, oil and gas, pipelines

In oil and gas production the potential damage to the oil and gas transportation lines caused by Top of the Line Corrosion (TLC) has become a key concern for pipeline operators given the inability of currently available prediction models to accurately capture the phase behavior and concomitant water condensation a precursor to TLC. Another concern with TLC is that continuous corrosion inhibitor application is usually not effective as TLC occurs in stratified flows where corrosion inhibitors can hardly reach corroding locations.This paper details a TLC model integrated into a CO2/H2S corrosion prediction model developed by the authors’ organization. The TLC model determines the Top of The Line corrosion rate of carbon steel based on iron concentration and film-wise condensation rate. The effect of various glycols such as Monoethylene Glycol (MEG) Diethylene glycol (DEG) and Triethylene Glycol (TEG) are included. Experimental data and field data were used for model validation and the predicted condensation rates and TLC rates demonstrated good agreement.

Keywords: corrosion rate, prediction, modeling, top of the line corrosion, oil and gas, pipelines

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51318-11223-Evaluation of Top-of-Line Corrosion Model for Multiphase Oil and Gas Environments

Product Number: 51318-11223-SG
Author: H. Li / K. M. Yap / S. Srinivasan
Publication Date: 2018
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The model was evaluated and effects of various parameters on corrosion rates are described. Corrosion rates obtained from the model are compared with actual field and lab testing data as a basis to quantify accuracy and efficacy.
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05551 CO2 Corrosion Prediction Model - Basic Principles

Product Number: 51300-05551-SG
ISBN: 05551 2005 CP
Author: Stein Olsen, Statoil ASA; Anne Marie Halvorsen, Norsk Hydro ASA; Per G. Lunde, Norsk Hydro Americas;
Publication Date: 2005
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The NORSOK M-506 is an empirical model based on experiments undertaken in a single phase water flow loop. The data is from experiments with low content of iron ions in the water phase, and the model is thus regarded to give a fair representation of the maximum corrosion rate in a CO2 corrosion controlled system.
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Guidelines for Corrosion Inhibitor Selection for Oil and Gas Production

Product Number: 51317--8842-SG
ISBN: 8842 2017 CP
Author: Johannes Sonke
Publication Date: 2017
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Recommended corrosion inhibitor (CI) testing methods and interpretation to assure proper execution of a test program. Associated guidance for CI test program definition testing and management to ensure and improve the integrity of carbon steels applications in our Industry.
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