Biodegradable dispersants for cement compositions and methods of cementing in subterranean formations
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United States of America Patent
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Sep 25, 2007
Grant Date -
Oct 21, 2004
app pub date -
Apr 15, 2003
filing date -
Apr 15, 2003
priority date (Note) -
Expired
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Abstract
Methods of cementing in a subterranean formation may include the steps of: providing a cement composition comprising a cement, water, and a dispersant comprising a low molecular weight starch that comprises anionic groups; placing the cement composition in the subterranean formation; and allowing the cement composition to set therein. In certain embodiments, improved biodegradable dispersants may include low molecular weight starches having anionic groups.
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