Cement blend

Details Cement blend Cement blend

C - Chemistry, Metallurgy

04

B

C04B 14/18 (2006.01) C04B 14/24 (2006.01) E21B 33/138 (2006.01)

Patent

CA 2635925

A cement blend includes a cement mixture and a permeable, micro-cluster silica material present in an amount from about 10 percent to about 30 percent by weight of the cement mixture. The cement blend may be used in casing a borehole when appropriate fluid loss agents are included in the cement blend. Additionally, a cement additive is added to a cement mixture to provide the cement blend. This cement additive can be formulated in a kit form.

L'invention concerne un mélange de ciment comprenant un mélange de ciment et un matériau perméable sous forme de micro-amas de silice, présent en une quantité d'environ 10 pour cent à environ 30 pour cent en poids du mélange de ciment. Le mélange de ciment peut être utilisé lors du cuvelage d'un puit lorsque les agents de perte de fluide appropriés sont inclus dans le mélange de ciment. Un additif est également ajouté pour obtenir le mélange de ciment. Cet additif peut être formulé sous forme de kit.

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