Methods and compositions for cementing pipe strings in well bores
AssigneeHalliburton Energy Services, Inc.
InventorsJiten Chatterji, Roger S. Cromwell, Robert D. Kuhlman, Bobby J. King
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Abstract
The present invention provides improved methods and compositions for cementing pipe strings in well bores. The methods of the invention are basically comprised of preparing a cement composition comprised of a hydraulic cement, an epoxy resin, a hardening agent for the epoxy resin and sufficient water to form a pumpable slurry. Thereafter, the cement composition is introduced into the annulus between a pipe string and a well bore and the cement composition is allowed to set into a resilient impermeable solid mass.
Claims10
An improved method of cementing a pipe string in a well bore comprising the steps of:
- (a) preparing a cement composition comprised of a hydraulic cement, an epoxy resin selected from the group consisting of a condensation reaction product of epichlorohydrin and bisphenol A and an epoxidized bisphenol A novolac resin, a hardening agent for said epoxy resin, sufficient water to form a pumpable slurry, a gas, a foaming agent and a foam stabilizer;
- (b) introducing said cement composition into the annulus between said pipe string and said well bore;
- and
- (c) allowing said cement composition to set into a resilient impermeable solid mass.
Dependencies are inferred from the claim text.