Dispersant and fluid loss control additives for well cements, well cement compositions and methods
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United States of America Patent
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Feb 6, 2001
Grant Date -
N/A
app pub date -
Aug 30, 1999
filing date -
Aug 30, 1999
priority date (Note) -
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Abstract
Biodegradable dispersing and fluid loss control additives for well cements, well cement compositions including the additives and methods of using the well cement compositions are provided. The well cement compositions are basically comprised of a hydraulic cement, water in an amount sufficient to form a slurry and a dispersing and fluid loss control additive comprised of casein. A second agent which also provides fluid loss control can optionally be included in the additive.
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