WELL CEMENTING COMPOSITIONS AND METHODS

WELL CEMENTING COMPOSITIONS AND METHODS

A well cementing composition that includes water, portland cement, a retarder and colloidal amorphous silica, present at a concentration between 0.2% and 1.0% by weight of cement. When added at such concentrations, the colloidal amorphous silica behaves as a retarder aid at bottomhole circulating te...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BEAUDY, Pierre, MICHAUX, Michel, CARITEY, Jean-Philippe
Format: Patent
Sprache:eng
Schlagworte:
ADHESIVES
CHEMISTRY
DYES
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
POLISHES
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Beschreibung
Zusammenfassung:A well cementing composition that includes water, portland cement, a retarder and colloidal amorphous silica, present at a concentration between 0.2% and 1.0% by weight of cement. When added at such concentrations, the colloidal amorphous silica behaves as a retarder aid at bottomhole circulating temperatures exceeding 100° C. Methods for employing these compositions in well cementing operations are also disclosed.