Cement slurries comprising hydrophobic polymers
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United States of America Patent
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Mar 23, 2004
Grant Date -
Sep 6, 2001
app pub date -
Feb 9, 2001
filing date -
Feb 10, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a cement slurry set in a wellbore. The slurry comprises cement, at least one mineral filler, water and a determined amount of at least one hydrophobically modified acrylamide or acrylate derivative. The present invention also relates to an additive specific to a cement slurry and acting as a filtrate reducer and as a rheological control agent, the additive comprising mainly a hydrophobically modified acrylamide or acrylate derivative.
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