Acceleration of gelation of water soluble polymers

Details Acceleration of gelation of water soluble polymers Acceleration of gelation of water soluble polymers

E - Fixed Constructions

21

B

E21B 43/22 (2006.01) C09K 8/512 (2006.01)

Patent

CA 2096765

A gellable composition for oil field operations and a process for accelerating the gelation of the gellable composition for shut-in well are disclosed. The composition comprises: (1) an ammonium ion donor; (2) a water soluble acrylamide-containing polymer; (3) a first crosslinking component selected from the group consisting of aldehydes and aldehyde-generating compounds; (4) a second crosslinking component selected from the group consisting of an aromatic compound and an alcohol where the aromatic compound is selected from the group consisting of phenols and acids; and (4) water.

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