The Precipitation and Inhibition Kinetics of Mixed Carbonates in Ca-Fe-CO2-Na-Cl-H2O System with Various Ca/Fe Ratios
Abstract This study investigated the kinetics of CaCO3 precipitation in the presence of Fe2+ at 70°C under anoxic conditions (1M NaCl, pH 6.00–6.03) using a flow-through system with carbon steel surfaces. The primary objectives were to assess the effect of varying Fe2+ concentrations on CaCO3 precipitation rates, explore solid solution formation, and evaluate the role of mild steel corrosion in scale development. Findings indicated that Fe2+ had minimal influence on the precipitation rate but increased CaCO3 solubility. Evidence suggests the formation of a CaxFe1−xCO3 solid solution. This study provides valuable insights into carbonate precipitation mechanisms in CO2 corrosion, contributing to improved industrial scale management.
Authors
- Mason B. Tomson (ORCID: https://orcid.org/0000-0002-3024-559X)
- Y. Ye
- Amy T. Kan (ORCID: https://orcid.org/0000-0003-2481-2778)
- David Pimentel (ORCID: https://orcid.org/0000-0001-5897-0171)
- Aurora Reiss (ORCID: https://orcid.org/0000-0001-6181-6343)
- Y. Y. Shen (ORCID: https://orcid.org/0009-0003-9130-2505)
- Guannan Deng
Institutions
- Rice University (US)
Publication Details
- Journal
- SPE International Conference on Oilfield Chemistry
- Published
- 2025-04-02
- DOI
- https://doi.org/10.2118/224310-ms
- Primary Topic
- Calcium Carbonate Crystallization and Inhibition
- Type
- article
- Field-Weighted Citation Impact
- 0.00