System and method for leak prevention
AssigneeSchlumberger Technology Corporation
InventorsJean Elkhoury, Sharath Chandra Mahavadi
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Abstract
A well cementing system may flow a carrier fluid into an annulus defined between an outer surface of a casing and a wellbore wall, the carrier fluid including reactive particles having a particle size between 1 nm and 1 μm. A well cementing system may coat at least a portion of an annular surface of the annulus with the reactive particles, the reactive particles formulated and configured to react with a reactant in the annulus to cause the reactive particles to increase in volume.
Claims20
A method for annular crack mitigation in a wellbore, the method comprising:
- flowing a carrier fluid into an annulus defined between an outer surface of a casing and a wellbore wall, the carrier fluid including reactive particles having a particle size between 1 nm and 1 μm;
- and
- coating at least a portion of an annular surface of the annulus with the reactive particles, the reactive particles formulated and configured to react with a reactant in the annulus to cause the reactive particles to increase in volume.
A well cementing system comprising:
- a spacer fluid configured to be pumped into an annular space between a wellbore wall and a casing;
- and
- reactive particles mixed into the spacer fluid for coating an outer surface of the casing and a wellbore wall of a wellbore, wherein the reactive particles includes an average particle size of less than 1 μm.
Dependencies are inferred from the claim text.