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Limitations of Corrosion Resistant Alloy in High CO2 Gas Production Systems: A Case Study

The paper presentation shows the application of a holistic approach to corrosion prediction that overcomes classical pitfalls in corrosion testing and modelling at high pressure, high temperature, and high CO2 conditions. Thermodynamic modelling of field and lab conditions allows for more accurate predictions by a novel CO2/H2S general corrosion model validated by laboratory tests. The results from the model and tests extend the application of selected stainless steel grade beyond the threshold conditions calculated by simplistic models and guidelines. In the case study used to showcase the workflow, conventional stainless steel is validated for most of the tubing. Harsh environments pose a challenge to the application of conventional steel materials. The workflow applied to the case study allows accurate representation and application of materials in its application limit region, allowing for safe use of carbon steel or less noble stainless steels in those areas of the completion where corrosion is limited by multiphase fluid dynamics, heat transfer, or both. Our archived 2020-21 event content is now available free to SPE members! This presentation in English is from the 2021 SPE International Oilfield Corrosion Conference and Exhibition.

  • Paper Number: SPE-205036-MS
  • Published: 16 June 2021
  • Authors: Jorge Rodriguez; Susana Gómez; Ngoc Tran Dinh; Giovanni Ortuño; Narendra Borole