Compositions cimentaires et application de celles-ci a la cimentation de puits de petrole ou analogue

Cementing compositions and application thereof to cementing oil or analogous wells

Abstract

The present invention relates to a cementing composition for an oil or analogous well based on Portland cement and silica. The composition also includes a certain quantity of a mineral oxide suitable for promoting the formation of a phase that is temperature- and pressure-stable, such as a hydrogarnet. The invention is of particular application to cementing wells subjected to high temperatures and which may also be subjected to chemical attack, in particular by brine.
La présente invention concerne une composition cimentaire destinée à un puits de pétrole ou analogue et à base de ciment Portland et de silice. Cette composition comprend également une certaine quantité d'un oxyde minéral, apte à promouvoir la formation d'une phase qui soit stable à la température et à la pression, comme un hydrogrenat. L'invention trouve une application particulière dans la cimentation de puits soumis à des températures élevées et éventuellement à une attaque chimique, notamment par les saumures.

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NO-Patent Citations (4)

    Title
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Cited By (3)

    Publication numberPublication dateAssigneeTitle
    GB-2407567-AMay 04, 2005Schlumberger Holdings, Centre Nat Rech ScientHigh temperature resistant cement
    US-7449061-B2November 11, 2008Schlumberger Technology CorporationHigh temperature cements
    WO-03068708-A1August 21, 2003Services Petroliers Schlumberger, Schlumberger Technology B.V., Schlumberger Holdings Limited, Sofitech N.V., Schlumberger Canada LimitedCement compositions for high temperature applications