Research on Carbon Dioxide Corrosion of Cement Stones of Oil Well Casings under High Temperature and High Pressure

Ping Wang; Zhan Qu; Jian Bing Zhang

doi:10.4028/www.scientific.net/AMR.413.24

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 413Research on Carbon Dioxide Corrosion of Cement...

Research on Carbon Dioxide Corrosion of Cement Stones of Oil Well Casings under High Temperature and High Pressure

Abstract:

The effect of CO₂ on seal capacity of cement mantle causes casing corrosion and reduces the life of oil well. The corrosion proof of cement system is studied to improve the integrity and seal properties of the cement stone under acidic medium. The CO₂ corrosion test of 5 blocks cement under high temperature and high pressure was conducted. Compressive strength, permeability and corrosion depth were measured and morphology after corrosion was observed by scanning electron microscope. A density cement slurry formulations was selected by analyzing the experimental data. It not only has excellent corrosion resistance, but also has properties of anti-gas breakthrough, reduction of free water and stability. It can meet cementing requirement of different well depth conditions.

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Periodical:

Advanced Materials Research (Volume 413)

Pages:

24-28

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.413.24

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Online since:

December 2011

Authors:

Ping Wang, Zhan Qu, Jian Bing Zhang

Keywords:

Carbon Dioxide Corrosion, Erosion Resistance, High-Pressure, High-Temperature, Oil Well Cement, Well Cementing

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