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10368 A Systematic Approach Toward Selection of Cost-Effective and Corrosion Resistant Materials and Corrosion Inhibition and Protection Methods by Using Corrosion Prediction Models

A methodology was developed to identify and choose the most cost-effective material and also appropriate remedial corrosion inhibition and protection methods by using 4 reputable corrosion prediction models in dry and wet oil & gas pipeline containing CO2 with and without H2S.

Product Number: 51300-10368-SG
ISBN: 10368 2010 CP
Author: Roozbeh Fartash, Habib Sabbagh Amirkhizi and Mobin Salasi
Publication Date: 2010
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A methodology was developed to identify and choose the most cost-effective material and also appropriate remedial corrosion inhibition and protection methods by using 4 reputable corrosion prediction models in dry and wet oil & gas pipeline containing CO2 with and without H2S. The importance of the corrosion allowance factor for the basic design stage, initiated this project as an active study in NEC(2) in early 2008. Observed discrepancies in the predicted corrosion rates by different corrosion prediction models for identical conditions, aimed the group to develop a methodology that with compromising the limitation and capabilities of each models, concludes the most reliable approach toward corrosion rate prediction in the company’s pipeline projects.

Methodology was initially based on; a) Identifying the features, capabilities and also limitations of each corrosion prediction model b) Identifying and prioritizing the critical variants in corrosion rate prediction for the given environment (Sweet / Sour)

Thereafter, according to the mentioned steps and the project’s restrictions the most cost-effective remedy action for each critical corrosion rate’s variant was selected by cost-benefit study. Ultimately, this approach has been implemented in company’s current projects and results appeared to be satisfactory enough.

Keywords: corrosion model, cost-benefit method, CO2 corrosion, corrosion allowance, pipeline

A methodology was developed to identify and choose the most cost-effective material and also appropriate remedial corrosion inhibition and protection methods by using 4 reputable corrosion prediction models in dry and wet oil & gas pipeline containing CO2 with and without H2S. The importance of the corrosion allowance factor for the basic design stage, initiated this project as an active study in NEC(2) in early 2008. Observed discrepancies in the predicted corrosion rates by different corrosion prediction models for identical conditions, aimed the group to develop a methodology that with compromising the limitation and capabilities of each models, concludes the most reliable approach toward corrosion rate prediction in the company’s pipeline projects.

Methodology was initially based on; a) Identifying the features, capabilities and also limitations of each corrosion prediction model b) Identifying and prioritizing the critical variants in corrosion rate prediction for the given environment (Sweet / Sour)

Thereafter, according to the mentioned steps and the project’s restrictions the most cost-effective remedy action for each critical corrosion rate’s variant was selected by cost-benefit study. Ultimately, this approach has been implemented in company’s current projects and results appeared to be satisfactory enough.

Keywords: corrosion model, cost-benefit method, CO2 corrosion, corrosion allowance, pipeline

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51316-7803-Materials Selection and Corrosion Mitigation for Offshore Pipeline System

Product Number: 51316-7803-SG
ISBN: 7803 2016 CP
Author: Shuangqi Song
Publication Date: 2016
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