SEALANT COMPOSITIONS AND METHODS OF USE

摘要

A composition comprises an aqueous fluid, fly ash, fume silica, and a filler material, wherein the composition is a cohesive sealant. In one embodiment, the sealant composition comprises a base fluid, a binder material, and a filler material, wherein: the binder material comprises at least one material selected from the group consisting of fly ash, hydrated lime, fume silica, a pozzolanic material, a cementitious material, and any derivative thereof; and the sealant composition will form a cohesive sealant. A method of sealing in a wellbore comprises introducing a sealant composition into a well bore that penetrates a subterranean formation, wherein the sealant composition comprises a base fluid, a binder material, and a filler material; and allowing the sealant composition to form a cohesive sealant.