METHODS AND COMPOSITIONS FOR HIGH TEMPERATURE LIGHTWEIGHT CEMENTING

• Main Authors: KULAKOFSKY, DAVID S, SZYMANSKI, MICHAEL J
• Format: Patent
• Language: English; French
• Published: 12.04.2011
• Subjects: ADHESIVES; ARTIFICIAL STONE; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; DYES; LIME, MAGNESIA; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; POLISHES; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

Methods for performing cementing operations in a subterranean zone under high temperature conditions include forming a cementing composition having a density of less than about 10.5 pounds per gallon, pumping the cementing composition into the subterranean zone by way of the well bore and allowing the cementing composition to set therein. The cementing composition includes calcium aluminate, water, and a lightweight additive having a specific gravity of less than about 0.70. L'invention porte sur des procédés permettant d'effectuer des opérations de cimentation dans une zone souterraine dans des conditions de température élevée, ces procédés consistant à former une composition de cimentation dont la densité est inférieure à environ 10,5 livres par gallon, pomper la composition de cimentation dans la zone souterraine par le puits de forage et laisser prendre dans celle-ci la composition de cimentation. La composition de cimentation comprend un aluminate de calcium, de l'eau et un additif léger dont la gravité spécifique est inférieure à environ 0,70.