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51316-7250-Sour Localized Pitting Corrosion Model of Carbon Steel: A Status Update

Picture for Sour Localized Pitting Corrosion Model of Carbon Steel: A Status Update
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The sour model had been previously developed to predict localized internal pitting corrosion of carbon steel. This model included the effects of carbon dioxide (CO2), crude oil, temperature, pressure, flow, sulfur, sulfates, bicarbonates, chlorides and microbiologically influenced corrosion (MIC). The paper discusses  field use, merits, precautions and parameterization in using the model.

Product Number: 51316-7250-SG
ISBN: 7250 2016 CP
Author: Sankara Papavinasam
Publication Date: 2016
Industries: Oil and Gas Production , Corrosion Monitoring and Control
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The sour model had been previously developed to predict localized internal pitting corrosion of carbon steel. This model also included the effects of carbon dioxide (CO2), crude oil, temperature, pressure, flow, sulfur, sulfates, bicarbonates, chlorides and microbiologically influenced corrosion (MIC). This sour localized pitting corrosion was based on experiments carried out in the laboratory at high pressure and high temperature, on field tests carried out over a period of four years, and on analysis of field data. The sour localized pitting corrosion model had further been integrated with flow model. The flow model predicted locations susceptible for water accumulation and the sour corrosion model then predicted localized pitting corrosion rates in those locations where water accumulated. The model further accounted for the variation in the field operating conditions including variation of flow velocity, flow regimes, time, and operating boundaries.

In this paper, status of field use of the sour localized pitting corrosion model, merits of the sour localized pitting corrosion model, precautions in using the model, and methods to select appropriate models are discussed.

Keywords: Downloadable, Sour corrosion, sour corrosion model, pitting corrosion, localized corrosion, oil and gas production, model, prediction

 

The sour model had been previously developed to predict localized internal pitting corrosion of carbon steel. This model also included the effects of carbon dioxide (CO2), crude oil, temperature, pressure, flow, sulfur, sulfates, bicarbonates, chlorides and microbiologically influenced corrosion (MIC). This sour localized pitting corrosion was based on experiments carried out in the laboratory at high pressure and high temperature, on field tests carried out over a period of four years, and on analysis of field data. The sour localized pitting corrosion model had further been integrated with flow model. The flow model predicted locations susceptible for water accumulation and the sour corrosion model then predicted localized pitting corrosion rates in those locations where water accumulated. The model further accounted for the variation in the field operating conditions including variation of flow velocity, flow regimes, time, and operating boundaries.

In this paper, status of field use of the sour localized pitting corrosion model, merits of the sour localized pitting corrosion model, precautions in using the model, and methods to select appropriate models are discussed.

Keywords: Downloadable, Sour corrosion, sour corrosion model, pitting corrosion, localized corrosion, oil and gas production, model, prediction

 

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10332 Sour and Sweet Corrosion of Carbon Steel: General or Pitting or Localized or All of the Above?

Product Number: 51300-10332-SG
ISBN: 10332 2010 CP
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Analysis of corrosion of carbon steel in sour and sweet environments. Non-classical nature of localized pitting corrosion of carbon steel in sour and sweet environments explained. Description of a model to predict internal pitting corrosion of carbon steel under sour and sweet environments,
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51316-7313-Effect of Iron Sulfide Deposits on Sour Corrosion of Carbon Steel

Product Number: 51316-7313-SG
ISBN: 7313 2016 CP
Author: Jon Kvarekval
Publication Date: 2016
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The corrosive effects of iron monosulfide deposited on carbon steel surfaces were investigated in  autoclave experiments. The H2S and CO2 partial pressures were 1 to 20 bar.  Temperatures were 10-120 °C. The test solutions consisted of high-salinity brine and low-salinity condensed water. Typical duration was 14 days. Weight loss and localized corrosion data were obtained.
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51316-7252-The Role of Corrosion Management in Prevention of Corrosion Failures

Product Number: 51316-7252-SG
ISBN: 7252 2016 CP
Author: Alec Groysman
Publication Date: 2016
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The aim of this work is to analyze the role of corrosion management in prevention of corrosion accidents related primarily to safety of personnel and the environment. This is achieved by anti-corrosion measures, corrosion monitoring, regular inspection, study of each accident, implementation of meetings, publications, education, and knowledge transfer.
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