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US 9,790,418 B2Granted
Silica composition for servicing subterranean wells
AssigneeSchlumberger Technology Corporation
InventorsSimon Gareth James, Michel Michaux, Clara Carelli, Sylvaine Le Roy-Delage
Life of this patent
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Abstract
This invention relates to methods for servicing subterranean wells, in particular, fluid compositions and methods for remedial operations during which the fluid compositions are pumped into a wellbore and make contact with well cements placed during primary cementing or previous remedial cementing operations.
Claims10
A pumpable sealant composition for establishing hydraulic isolation in a cemented subterranean well, comprising:
- a silica-particle suspension with no intrinsic cementitious properties which, upon exposure to multivalent ions, forms a gel.
Dependencies are inferred from the claim text.