Corrosion Behavior of 3Cr Steel in Simulated Oilfield CO₂ Environment

Abstract:

The corrosion behavior of 3Cr steel in simulated oilfield CO₂ and formation water environment at different temperature and partial pressure of CO₂ were investigated using dynamic immersion tests, scanning electron microscopy inspection and X-ray diffraction analysis. The result demonstrated that with an increasing of temperature, the corrosion rate of 3Cr steel decreased, and reached the maximum corrosion rate when the partial pressure of CO₂ was 0.5MPa. The high content of Ca²⁺ in the formation water had also played an important role in the corrosion behavior of the 3Cr steel for it can lead to a deposition of the CaCO₃ on the surface of the specimen.

• Periodical: Materials Science Forum (Volume 1071)
• Pages: 91-98
• DOI: https://doi.org/10.4028/p-tlbkjo
• Online since: October 2022
• Authors: Nan Ji*, Xian Ren Kuang, Kai Qi Ge, Peng Wang, Yan Long, Chun Feng
• Keywords: 3Cr Steel, CO₂, Dynamic Immersion, Pressure, Temperature

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