Method for wellbore sealing
AssigneeHalliburton Energy Services, Inc.
InventorsAntonio Recio, III, Julio Estuardo Vasquez Estrada, Larry S. Eoff
Life of this patent
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Abstract
Methods and compositions for performing a sealing operation in a wellbore. An example method introduces a sealant composition into the wellbore while the sealant composition is under shear. The sealant composition comprises a thixotropic material, a conformance gel system, and an aqueous base fluid. The sealant composition is placed into a target location, and applied shear is reduced to the sealant composition when in the target location thereby allowing the sealant composition to thicken in the target location. Fluid flow across the target location is reduced by a fluid seal formed by the thickened sealant composition.
Claims10
A method for performing a sealing operation in a wellbore comprising:
- introducing a sealant composition into the wellbore while the sealant composition is under shear, the sealant composition comprising:
- a thixotropic material,
- a conformance gel system, and
- an aqueous base fluid;
- placing the sealant composition into a target location, wherein the target location is an annulus of the wellbore;
- wherein the annulus is adjacent to a water zone of a subterranean formation;
- reducing shear applied to the sealant composition when in the target location thereby allowing the sealant composition to thicken in the target location, and
- reducing fluid flow across the target location with a fluid seal formed by the thickened sealant composition;
- thereby reducing water flow into the annulus from the water zone.
Dependencies are inferred from the claim text.