Methods of sealing expandable pipe in well bores and sealing compositions
AssigneeHalliburton Energy Services, Inc.
InventorsLance E. Brothers, Anthony V. Palmer
Life of this patent
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Abstract
The present invention provides methods and compressible foamed sealing compositions for sealing expandable pipe in well bores. The compressible sealant compositions for sealing expandable pipe are basically comprised of a hydraulic cement, a rubber latex, a rubber latex stabilizer, a gas and a mixture of foaming and foam stabilizing surfactants.
Claims108
A method of sealing an expandable pipe or pipe string in a well bore comprising:
- placing a foamed compressible hydraulic cement composition in an annulus between the well bore and the expandable pipe or pipe string;
- and
- expanding the expandable pipe or pipe string whereby the compressible composition is compressed.
A method of sealing an expandable pipe or pipe string in a well bore comprising:
- placing a compressible composition in an annulus between the well bore and the expandable pipe or pipe string;
- allowing the composition to harden;
- and
- expanding the expandable pipe or pipe string whereby the hardened composition is compressed.
A method of sealing an expandable pipe or pipe string in a well bore comprising:
- placing a compressible hydraulic cement composition which remains competent when compressed in an annulus between the well bore and the expandable pipe or pipe string;
- allowing the composition to harden;
- and
- expanding the expandable pipe or pipe string whereby the hardened composition is compressed.
A foamable and compressible composition for sealing an expandable pipe or pipe string in a well bore comprising hydraulic cement, rubber latex, and a latex stabilizer.
Dependencies are inferred from the claim text.