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US 6,330,917 B2Granted
Resilient well cement compositions and methods
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, Roger S. Cromwell, Baireddy R. Reddy, Bobby J. King
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Abstract
The present invention provides improved compositions and methods for sealing pipe in a well bore. The compositions which harden into highly resilient solid masses having high strengths are basically comprised of a hydraulic cement, an aqueous rubber latex, an aqueous rubber latex stabilizing surfactant, an epoxy resin, an epoxy resin hardening agent and porous precipitated silica hydrophobicized with silicone oil.
Claims13
An improved method of cementing pipe in a well bore comprising the steps of:
- (a) preparing a cement composition which hardens into a resilient solid mass having high strength comprised of a hydraulic cement, an aqueous rubber latex, an aqueous rubber latex stabilizing surfactant, an epoxy resin, an epoxy resin hardening agent, and porous precipitated silica hydrophobicized with silicone oil;
- (b) placing said cement composition in the annulus between said pipe and the walls of said well bore;
- and
- (c) allowing said cement composition to harden.
1 more element
Dependencies are inferred from the claim text.