Crosslinkable cellulose derivatives

Details Crosslinkable cellulose derivatives Crosslinkable cellulose derivatives

1990-10-04

1991-11-26

Suchfield, George A.

Wells

Processes

Placing fluid into the formation

166278, 166308, 252 8551, E21B 4304, E21B 4325, E21B 4326

Patent

active

050675656

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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