Cement composition based on calcium aluminate cement
AssigneeElkem AS
InventorsPhillippe Revil, Hong Peng
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Abstract
The present invention relates to a current composition for cementing oil or gas wells. The composition comprises calcium aluminate cement in which the proportion of HC203 is at least 50% by weight, dispersant, microsilica, mineral particles, water and optionally a retarder.
Claims23
1-27. (canceled)
A cement composition for cementing oil-and gas wells comprising 35-50% by weight of dry components of calcium aluminate cement in which the proportion of Al2O3 is at least 50% by weight, dispersant, 20-25% by weight of dry components of microsilica, 5-30% by weight of dry components of mineral particles selected from silica flour and alumina, water and optionally a retarder,
Dependencies are inferred from the claim text.