CO2 Corrosion on Oilwell Cement Shearth:Thermodynamic Criteria, Corrosive Mecha-nism and Prevention

doi:10.3863/j.issn.1000-2634.1998.03.019

西南石油大学学报(自然科学版) ›› 1998, Vol. 20 ›› Issue (3): 68-71.DOI: 10.3863/j.issn.1000-2634.1998.03.019

• 化学工程 • Previous Articles Next Articles

CO2 Corrosion on Oilwell Cement Shearth:Thermodynamic Criteria, Corrosive Mecha-nism and Prevention

Yao Xiao

( Dept. of Chemical Engineering, SWPI,Sichuan, 637001 )

Received:1998-02-27 Revised:1900-01-01 Online:1998-08-20 Published:1998-08-20
Contact: Yao Xiao

Abstract

Abstract: The carbonation mechanism of CO2 corrosion on oilwell cement shearth at temperatres lower than 110℃is analyzed from a cement chemistry point of
view, and thecriteria of corrosion are discussed on the basis of thermodynamic principles. Ways to pre-vent oilwell cement shearth from CO2 corrosion for
domestic oilfields with high CO2 concentrations are proposed. A (cited ) criterion for predicting carbon-ation of the shearth is also recommended.

Key words: Oilwell cement, Well cementing, CO2corrosion, Thermodynamics, Mechanism

CLC Number:

TE256.5

Yao Xiao. CO2 Corrosion on Oilwell Cement Shearth:Thermodynamic Criteria, Corrosive Mecha-nism and Prevention[J]. 西南石油大学学报(自然科学版), 1998, 20(3): 68-71.

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CO2 Corrosion on Oilwell Cement Shearth:Thermodynamic Criteria, Corrosive Mecha-nism and Prevention

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