Abstract: Methods of cementing in subterranean formations are provided. An example of a method is a method comprising: providing a set-delayed cement composition comprising: water, and a cementitious component consisting essentially of: hydrated lime, and silica; placing the set-delayed cement composition into a subterranean formation; and allowing the set-delayed cement composition to set in the subterranean formation.

Abstract: Cement compositions for use in subterranean formations are provided. An example of a cement composition is a cement composition comprising: water, a cementitious component consisting essentially of: hydrated lime, and silica; and a dispersant. Another example of a cement composition is a cement composition comprising: water, a cementitious component consisting essentially of: hydrated lime, and silica; and a set retarder. Another example of a cement composition is a cement composition comprising: water, a cementitious component consisting essentially of: hydrated lime, and silica; and a fluid loss control additive.

Abstract: Cement compositions having enhanced mechanical properties and comprising microspheres and carbon fibers are provided herein. The cement compositions comprise a cement material, carbon fibers, microspheres, sufficient water to form a slurry, and optionally other ingredients.