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US 2011/0077175 A1Published application
Sealant Composition
AssigneeSchlumberger Technology Corporation
InventorsSimon James, Michel Michaux
Life of this patent
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Abstract
A sealant composition for use in subterranean wells comprising an alkali metal silicate and a calcium containing inorganic compound wherein the particles of the calcium containing compound have a mean particle size that is submicron.
Claims20
A method of sealing voids in a subterranean well, comprising:
- (i) preparing a sealant composition comprising an alkali metal silicate and an inorganic calcium-containing-compound having particles with a mean particle size less than 1 micrometer;
- (ii) injecting the sealant composition into a void;
- and
- (iii) allowing the sealant composition to set.
1 more element
A method of sealing voids in a subterranean well, comprising:
- (i) preparing a sealant composition comprising an alkali metal silicate and an inorganic calcium-containing-compound having particles with a mean particle size less than 1 micrometer, the particles having a hydrophobic coating;
- (ii) injecting the sealant composition into a void;
- and
- (iii) allowing the sealant composition to set.
1 more element
A method of sealing voids in a subterranean well, comprising:
- (i) pumping an alkali metal silicate compound and a calcium-containing-compound, having a mean particles size less than 1 micrometer, separately down a borehole;
- and
- (ii) allowing the alkali metal silicate and calcium-containing-compound to mix together to form a sealant composition downhole before the composition penetrates into a void.
Dependencies are inferred from the claim text.