Compositions and methods for branched calcium lignosulfonate cement dispersants

Abstract

Compositions may include a calcium lignosulfonate salt having syringyl groups of 2 to 10. The compositions may further include an alcohol, an aldehyde, and water. Cement slurries may include a lignosulfonate-based cement dispersant including a calcium lignosulfonate salt, an alcohol, an aldehyde, and water, wherein a total number of syringyl groups is 2 to 10. The cement slurries may further include a cement and water. Methods may include introducing a cement slurry into a wellbore penetrating a subterranean formation, wherein the cement slurry comprises a lignosulfonate-based cement dispersant, a cement, and water, and allowing the cement slurry to set to a concrete in a downhole zone of interest.

Dependencies are inferred from the claim text.