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US 8,770,291 B2Granted
Hybrid cement set-on-command compositions and methods of use
AssigneeHalliburton Energy Services, Inc.
InventorsNatasha Shirshova, Alexander Bismarck, Angelika Menner, Gary Funkhouser
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Abstract
A method for isolating a portion of a wellbore including preparing a sealant composition includes an emulsion of an internal phase and an external phase. The sealant composition is placed into the wellbore where one phase sets upon subjecting the sealant composition to a thermal source followed by the setting of the other phase.
Claims28
A method comprising:
- placing a sealant composition into a subterranean formation after drilling of a wellbore therein;
- wherein the sealant composition comprises an emulsion of an internal aqueous phase and an external organic phase, and wherein the internal aqueous phase comprises cement slurry, the cement slurry present in the aqueous phase in an amount of about 75% to about 95% by volume of the aqueous phase;
- subjecting the sealant composition to a thermal source;
- wherein subjecting the sealant composition to the thermal source alters the external phase and the internal phase.
1 more element
A method comprising:
- placing a sealant composition into a subterranean formation after the drilling of a wellbore therein, the sealant composition comprising an emulsion of an internal phase and an external phase that are immiscible with each other;
- and
- subjecting the sealant composition to a thermal source;
- wherein the internal phase comprises an aqueous phase that comprises cement slurry and the external phase comprises an organic phase that comprises at least one of a monomer or a thermo-setting resin;
- wherein the cement slurry is present in the aqueous phase in an amount of about 75% to about 95% by volume of the aqueous phase;
- and
- wherein subjecting the sealant composition to the thermal source alters the external phase by at least one of polymerizing the monomer or setting the resin, resulting in an increase in the mechanical strength of the sealant composition.
4 more elements
Dependencies are inferred from the claim text.