Corrosion behavior of 13Cr casing steel in cement-synthetic pore solution exposed to high pressure CO2 and H2S
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CitationR. Feng, J. Beck, D. M. Hall, A. Buyuksagis, M. Ziomek-Moroz And S.N. Lvov, “Corrosion Behavior Of 13cr Casing Steel İn Cement-Synthetic Pore Solution Exposed To High Pressure Co2 And H2s, Ecs Transactions, 69 (26) 27-40 (2015), 10.1149/06926.0027ecst ©The Electrochemical Society
The electrochemical corrosion behavior of grade L-80, type 13Cr casing steel was investigated in cement-synthetic pore solution (CSPS) exposed to CO2 and H2S using in-situ electrochemical methods and ex-situ surface analyses at 85 and 200 °C, respectively. Total system pressure was 10 MPa. Corrosion rates increased significantly when the temperature increased from 85 to 200 °C. Limiting current behavior was observed for the anode reaction, while charge-transfer control was observed for the cathode reaction. Surface analyses revealed the presence of CaCO3 on the surface at both temperatures and FeCO3-like deposits at 200 °C.