COMPOSITIONS AND METHODS FOR BRANCHED CALCIUM LIGNOSULFONATE CEMENT DISPERSANTS
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United States of America Patent
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Issued Date -
Aug 22, 2024
app pub date -
Feb 8, 2023
filing date -
Feb 8, 2023
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Abstract
Compositions may include a calcium lignosulfonate salt having a chemical structure (I), wherein a total number of syringyl groups is 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 having a chemical structure (I), an alcohol, an aldehyde, and water, wherein a total number of syringyl groups in the chemical structure (I) 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.
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