Key issues related to modelling of internal corrosion of oil and gas pipelines – A review

2007 ◽  
Vol 49 (12) ◽  
pp. 4308-4338 ◽  
Author(s):  
Srdjan Nešić
Keyword(s):  
Oil And Gas ◽  
Gas Pipelines ◽  
Internal Corrosion ◽  
Oil And Gas Pipelines ◽  
Key Issues

Effect of Hydrocarbons on the Internal Corrosion of Oil and Gas Pipelines

CORROSION ◽  
2007 ◽  
Vol 63 (7) ◽  
pp. 704-712 ◽  
Author(s):  
S. Papavinasam ◽  
A. Doiron ◽  
T. Panneerselvam ◽  
R. W. Revie
Keyword(s):  
Oil And Gas ◽  
Operating Conditions ◽  
Gas Pipelines ◽  
Internal Corrosion ◽  
Oil In Water ◽  
Oil And Gas Pipelines ◽  
Water Wettability

Abstract Under certain conditions, hydrocarbons may alter the internal corrosion conditions of oil and gas pipelines. In this paper, the effects of hydrocarbons on corrosion have been predicted based on the type of emulsion (i.e., water-in-oil or oil-in-water), wettability (oil-wet, water-wet, or mixed-wet), and corrosiveness of brine in the presence of hydrocarbons. Laboratory methodologies have been developed to determine wettability and to identify the type of emulsion under pipeline operating conditions. Using these methodologies, the wettability and the type of emulsion have been determined for 14 hydrocarbons obtained from operating pipelines. The corrosiveness of brine in the presence of hydrocarbons also has been determined using rotating cage experiments.

Reliability Analysis and Performance Predictions of Aged Pipelines Subjected to Internal Corrosion: A Markov Modelling Technique

2015 ◽  
Author(s):  
Chinedu I. Ossai ◽  
Brian Boswell ◽  
Ian J. Davies
Keyword(s):  
Oil And Gas ◽  
Integrated Management ◽  
Remaining Useful Life ◽  
Gas Pipelines ◽  
Markov Modelling ◽  
Internal Corrosion ◽  
Performance Predictions ◽  
Oil And Gas Pipelines ◽  
And Performance ◽  
Life Predictions

To maintain the integrity of corroded oil and gas pipelines, the reliability at times of exposure over the lifecycle duration need to be understood. This paper describes the procedures for predicting the performance of internally corroded oil and gas pipelines using a probabilistic-based Markovian process. The Pipeline Corrosivity Index (PCI), which is expressed as a function of the retained pipe-wall thickness was used to describe the condition of the corroded pipelines at exposure durations for low, moderate, high and severe corrosion rates. The time variation of the predicted Pipeline Corrosivity Index (PCI) was compared with field measured Pipeline Corrosivity Indexes (PCIs) of corroded API X52 grade pipelines and the results indicate that the model developed in this research is viable for integrated management of aged corroded pipelines and remaining useful life predictions.

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