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Effects of the Storage of CO(2) on Multiaxial Mechanical and Hydraulic Behaviors of Oil-Well Cement

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2011
auteur(s) Takla Issam; Burlion Nicolas; Shao Jian-Fu; Saint Marc Jérémie; Garnier André
journal (abréviation) Journal of Materials in Civil Engineering (J Mater Civ Eng)
volume (numéro) 23 (6)
  
pages 741 – 746
résumé The storage of CO(2) is an expected solution by the oil industry: using petroleum wells as geological reservoirs is a very important and new research field. The durability of such storage has an importance to be predicted. The carbonation of oil-well cement (Class G type) under temperature (90 degrees C) is evaluated in this paper. In the first part of the paper, the fabrication protocol for samples is explained, and the test conditions are described. The evolution of cement carbonation over time is then presented. In the second part of the paper, the results obtained by triaxial mechanical tests with permeability measurements at 90 degrees C are discussed. Mechanical evolutions obtained for different confinement pressures show a remarkable decrease in permeability and an important increase of multiaxial strengths, which may exceed 100%. Long-term tests of carbonation will be necessary to evaluate the effect of carbonic acid on the chemical stability of carbonated cement.
mots clés Oil-well cement; Carbonation; Strength; Permeability; Temperature
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