Crosslinkable cellulose derivatives
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United States of America Patent
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Nov 26, 1991
Issued Date -
N/A
app pub date -
Oct 4, 1990
filing date -
Mar 10, 1989
priority date (Note) -
Expired
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Abstract
Novel treating fluid compositions containing crosslinkable non-ionic cellulose derivatives and methods of use in petroleum recovery operations are disclosed. The treating fluid polymers are prepared by reacting vinyl monomers having a crosslinkable substituent with a cellulose derivative using a redox system comprising the reaction product of hydrogen peroxide with ferrous salt. The polymers readily crosslink with polyvalent metal ions, such as zirconium and titianium, to form temperature-stable gels useful in petroleum recovery operations.
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