E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 33/13 (2006.01)
Patent
CA 2541274
A cement composition for which the mechanical properties of the set cement can be controlled independently of the slurry density, both at high density (>16ppg) and at low density (<12ppg) comprises a trimodal blend of particulate materials present as fine, medium and coarse particule size fractions, the particulate materials including cement, flexible particles, and a filler, characterized in that the cement comprises the fine particle size fraction, and the flexible particles and filler comprise the medium and large particle size fractions.
La présente invention se rapporte à une composition de ciment pour laquelle les propriétés mécaniques du ciment durci peuvent être régulées indépendamment de la densité du lait de ciment, aussi bien à haute densité (>16ppg) qu'à basse densité (<12ppg) et qui comprend un mélange trimodal de matériaux particulaires présents sous forme de fractions granulométriques particulaires fines, moyennes et grossières, les matériaux particulaires comprenant du ciment, des particules souples et une charge. Ladite composition se caractérise en ce que le ciment comprend la fraction granulométrique fine et en ce que les particules souples et la charge comprennent les fractions granulométriques particulaires moyennes et grossières.
Drochon Bruno
James Simon
Schlumberger Canada Limited
Smart & Biggar
LandOfFree
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