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US 4,381,034 AGranted
Zero free water cement composition and method
AssigneeBJ-Hughes Inc.
InventorsRudolf J. Novotny, Richard G. Gandy
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Abstract
A well cementing composition and method of cementing well bores are disclosed in which a slurry is first prepared utilizing cement, mixing water, and aluminum hydroxychloride in the range of 0.1 to 4.5 weight percent based on the dry weight of cement. The slurry thus prepared when pumped into place in the well bore has zero free water content thereby reducing the bridging or channeling in the cement column which is associated with free water formation.
Claims3
A method of cementing well bores, comprising the steps of:
- preparing a fluid, pumpable cement slurry, said slurry comprising hydraulic cement, mixing water in the range of 30 to 150 weight percent based on the dry weight of cement, and aluminum hydroxychloride in the range of 0.1 to 4.5 weight percent based on the dry weight of cement;
- pumping said slurry to the desired location in the well bore;
- and
- allowing said slurry to set.
1 more element
Dependencies are inferred from the claim text.